{"product_id":"2017-2019-for-audi-a4-s4-b9-diffuser-with-tailpipe","title":"2017-2019 For Audi A4 S4 B9 Diffuser With Tailpipe","description":"\u003ch2\u003e\u003cspan\u003eProduct Description\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eOverview\u003c\/span\u003e\u003c\/h3\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eTransform the rear profile of your \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2017–2019 Audi A4 B9 S‑Line or S4\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with this \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eS4 style rear diffuser\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Designed specifically for the pre‑facelift B9 platform (2017–2019), this diffuser replaces your factory rear valance with the aggressive, sporty look of the S4 — featuring a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003egloss black UV‑stabilized ABS polymer construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, aggressive honeycomb design, and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003edual tailpipe exhaust tips\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eThe B9 generation brought sharp, modern styling to the A4\/S4 lineup. This S4‑inspired rear diffuser builds on that foundation, giving your A4 S‑Line a more commanding presence from every angle while improving rear‑end aerodynamics. The diffuser is crafted of a UV stabilized ABS polymer to achieve its deep high gloss shine and provides an aggressive and sporty style that's sure to set your vehicle apart from the rest\u003c\/span\u003e\u003ca href=\"https:\/\/www.ecstuning.com\/b-ecs-parts\/audi-b9-a4-pre-facelift-rear-diffuser-gloss-black\/008480la01~a\/?source=4164511\u0026amp;feature=sold-with\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. Features a dual tip\/dual outlet design to fit the factory and most aftermarket exhaust systems and is designed to accept exhaust tips up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4\" in diameter\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/es-performance.com\/products\/4056580?pr_prod_strat=e5_desc\u0026amp;pr_rec_id=83d9e0135\u0026amp;pr_rec_pid=8523007623472\u0026amp;pr_ref_pid=8714685088048\u0026amp;pr_seq=uniform\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e⚠️ Critical Fitment Note:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e This diffuser is exclusively for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAudi A4 B9 S‑Line (2017–2019) and S4 models\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. It will \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNOT\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e fit Non‑S‑Line (standard) A4 bumpers or facelift B9.5 (2020–2024) models. The rear bumpers are different between S‑Line and standard, as well as between pre‑facelift and facelift, making diffuser compatibility non‑interchangeable without verification\u003c\/span\u003e\u003ca href=\"https:\/\/www.alibaba.com\/product-insights\/how-to-choose-rear-diffuser-for-audi-a4-b9-is-a4-b9-reliable-guide.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eYou must have the factory S‑Line exterior package for this to fit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e📌 Complete Conversion Kit:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes rear diffuser, dual exhaust tips, self‑tapping screws, 3M VHB tape, and installation manual.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eAerodynamic Benefits:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The sculpted honeycomb design helps smooth airflow, reduce turbulence, and enhance rear‑end stability at higher speeds.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eServing both individual enthusiasts (B2C) and businesses (B2B):\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e✅ US warehouse for fast shipping\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e✅ CE certified for quality assurance\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e✅ 1‑year warranty for peace of mind\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e✅ Factory direct – competitive pricing\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e✅ Dropshipping \u0026amp; wholesale programs available\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e✅ Custom OEM\/ODM orders welcome\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e5 Key Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e1. Aggressive S4 Style Design\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eGive your A4 B9 S‑Line or S4 the sharp, sporty look of the S4. The aggressive dual‑outlet design and sculpted lines create a bold, OEM+ appearance that dramatically enhances the rear profile. This diffuser was engineered and designed specifically for the B9 chassis to add more aggression to the rear of your car while matching the factory appeal of your Audi\u003c\/span\u003e\u003ca href=\"https:\/\/www.ecstuning.com\/b-ecs-parts\/audi-b9-a4-pre-facelift-rear-diffuser-gloss-black\/008480la01~a\/?source=4164511\u0026amp;feature=sold-with\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e2. Complete Kit with Dual Tailpipe Exhaust Tips\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eAll‑in‑one conversion kit includes the rear diffuser and dual exhaust tips — everything you need for a full S4 style rear transformation. Features a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003edual‑outlet design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (left + right) that fits factory and most aftermarket exhaust systems and is designed to accept exhaust tips up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4\" in diameter\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/es-performance.com\/products\/4056580?pr_prod_strat=e5_desc\u0026amp;pr_rec_id=83d9e0135\u0026amp;pr_rec_pid=8523007623472\u0026amp;pr_ref_pid=8714685088048\u0026amp;pr_seq=uniform\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. Choose between polished stainless steel or black‑chrome finishes to match your personal style.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e3. Premium Gloss Black UV‑Stabilized ABS Construction\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eManufactured from high‑quality \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eUV‑stabilized ABS polymer\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — the same material used in OEM bumpers and body parts\u003c\/span\u003e\u003ca href=\"https:\/\/www.ecstuning.com\/b-ecs-parts\/audi-b9-a4-pre-facelift-rear-diffuser-gloss-black\/008480la01~a\/?source=4164511\u0026amp;feature=sold-with\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. The deep high‑gloss black finish is UV‑protected to prevent fading, yellowing, or bubbling from harsh sunlight. \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNo painting required\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — ready to install out of the box. A \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epremium pre‑preg dry carbon fiber version\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is also available for those seeking ultimate weight savings and weave aesthetics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e4. Direct Fitment for B9 S‑Line (2017–2019) — No Drilling Required\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eEngineered for a perfect OEM+ fit onto \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAudi A4 B9 S‑Line and S4 rear bumpers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e using factory mounting locations. Designed for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSedan (Saloon)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e body styles. Installs with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eno drilling, cutting, or modification of any kind\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e required\u003c\/span\u003e\u003ca href=\"https:\/\/www.ecstuning.com\/b-ecs-parts\/audi-b9-a4-pre-facelift-rear-diffuser-gloss-black\/008480la01~a\/?source=4164511\u0026amp;feature=sold-with\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. Simply remove your currently installed valance, line up all tabs, and lightly press the diffuser in place until the tabs click into position\u003c\/span\u003e\u003ca href=\"https:\/\/www.ecstuning.com\/b-ecs-parts\/audi-b9-a4-pre-facelift-rear-diffuser-gloss-black\/008480la01~a\/?source=4164511\u0026amp;feature=sold-with\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003e⚠️ Note:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e This diffuser is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNOT\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e compatible with Non‑S‑Line (standard) A4 bumpers or facelift B9.5 models. You must have the factory S‑Line exterior package to install this diffuser.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e5. CE \u0026amp; TUV MATERIALGUTACHTEN Certified\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis diffuser is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCE certified\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, meeting European safety and quality standards for automotive aftermarket parts. It has also received \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eTUV MATERIALGUTACHTEN certification\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, verifying material quality and safety for road use. The product is also \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEPR (France\/Germany)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e compliant, meeting environmental responsibility regulations for packaging and waste management. The product arrives with a protective film — \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003edo not remove the protective film\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e until you are certain the product fits, as removal will void the return policy\u003c\/span\u003e\u003ca href=\"https:\/\/www.darksidedevelopments.co.uk\/products\/maxton-rear-valance-audi-a4-s-line-b9-version-with-single-exhaust-tips-on-both-sides.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. If you decide to paint the diffuser, primer must be used first.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 31.8605%;\"\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth style=\"width: 67.7785%;\"\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eVehicle Fitment\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\n\u003cspan\u003eAudi A4 B9 (2017–2019) — \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eS‑Line ONLY\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e; Audi S4 B9 (2017–2019) — all trims\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eChassis Code\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003eB9 (Typ 8W, 2017‑2019 pre‑facelift)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eBody Styles\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003eSedan (Saloon)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eBumper Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\n\u003cstrong\u003e\u003cspan\u003eS‑Line Sport Bumper \/ S4 ONLY\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — NOT for Non‑S‑Line (standard)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eModel Years\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003e2017, 2018, 2019\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003ePremium UV‑Stabilized ABS Polymer \/ Pre‑Preg Dry Carbon Fiber (optional)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eFinish\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003eHigh‑Gloss Black (UV‑resistant, ready to install)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eStyle\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003eS4 OEM+ Style\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eExhaust Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\n\u003cspan\u003eDual‑outlet design (left + right); accepts tips up to 4\" diameter\u003c\/span\u003e\u003ca href=\"https:\/\/es-performance.com\/products\/4056580?pr_prod_strat=e5_desc\u0026amp;pr_rec_id=83d9e0135\u0026amp;pr_rec_pid=8523007623472\u0026amp;pr_ref_pid=8714685088048\u0026amp;pr_seq=uniform\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eAerodynamic Benefit\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003eImproves rear‑end aerodynamics by smoothing airflow\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eKit Includes\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003eRear diffuser, dual tailpipe exhaust tips (left + right)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eCertifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\n\u003cspan\u003eCE Certified, TUV MATERIALGUTACHTEN Certified\u003c\/span\u003e\u003ca href=\"https:\/\/www.darksidedevelopments.co.uk\/products\/maxton-rear-valance-audi-a4-s-line-b9-version-with-single-exhaust-tips-on-both-sides.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e, EPR (France\/Germany)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\n\u003cspan\u003eFactory mounting locations + tabs; press‑fit design; \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eno drilling required\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/www.ecstuning.com\/b-ecs-parts\/audi-b9-a4-pre-facelift-rear-diffuser-gloss-black\/008480la01~a\/?source=4164511\u0026amp;feature=sold-with\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eProtective Film\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\n\u003cspan\u003eProduct arrives with protective film — removal voids returns\u003c\/span\u003e\u003ca href=\"https:\/\/www.darksidedevelopments.co.uk\/products\/maxton-rear-valance-audi-a4-s-line-b9-version-with-single-exhaust-tips-on-both-sides.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003e1 Year (manufacturing defects)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 31.8605%;\"\u003e\u003cstrong\u003e\u003cspan\u003eCountry of Origin\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.7785%;\"\u003e\u003cspan\u003eFactory direct – quality controlled\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cspan\u003eWhat's in the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003e1 × S4 style rear diffuser \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003e2 × Dual tailpipe exhaust tips\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eInstallation Guide\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eProfessional installation is strongly recommended — do not attempt DIY unless you are a qualified technician.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eInstallation Time:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1–2 hours | \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDifficulty:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Moderate\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eImportant Safety Notice:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e When working underneath your vehicle, always use approved jack stands. Never work under a car that is only supported by a floor jack.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eShipping \u0026amp; Returns\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003e 20-Year Specialization: 158000+ bumpers installed since 2006.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eShipping:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Worldwide delivery. In-stock US orders ship within 1-3 business days. International orders: 22-25 business days. Free shipping \u0026amp;amp; no sales tax(Continental US only).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eReturns:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e If the kit does not fit, arrives damaged, or you are unsatisfied, return it within 15 days as long as it remains uninstalled and unpainted – free return shipping for genuine fitment issues. Combined with our 1-year warranty, this risk-free policy gives body shops, resellers, and DIYers complete confidence when ordering For Audi facelift kits. Contact us for wholesale pricing and US stock availability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eWarranty:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1-year warranty against manufacturing defects.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eQ1: Will this fit my 2017–2019 Audi A4?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eA:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes, if your vehicle is a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eB9 pre‑facelift (2017–2019) with the S‑Line sport bumper\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (or an S4). This diffuser will \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNOT\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e fit Non‑S‑Line (standard) A4 bumpers or facelift B9.5 (2020–2024) models. The 2019–2023 facelift introduced revised bumper contours, making diffuser compatibility non‑interchangeable without verification\u003c\/span\u003e\u003ca href=\"https:\/\/www.alibaba.com\/product-insights\/how-to-choose-rear-diffuser-for-audi-a4-b9-is-a4-b9-reliable-guide.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eQ2: How do I know if my A4 has S‑Line or Non‑S‑Line?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eA:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The S‑Line exterior package includes sportier bumpers, side skirts, and fender badges. If your A4 does not have these, you have the standard (Non‑S‑Line) bumper. S‑Line and S4 rear diffusers are physically incompatible with the standard A4 bumper.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eQ3: Does this kit include exhaust tips?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eA:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eYes!\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The complete kit includes dual tailpipe exhaust tips, self‑tapping screws, and 3M VHB tape — everything needed for a full S4 style rear transformation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eQ4: Does the diffuser require painting?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eA:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNo.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e It comes in a premium high‑gloss black UV‑stabilized finish — ready to install out of the box. UV‑protection prevents fading and yellowing. If you decide to paint it, primer must be used first.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eQ5: Is drilling required for installation?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eA:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNo drilling, cutting, or modification of any kind is required when using factory mounting locations\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/www.ecstuning.com\/b-ecs-parts\/audi-b9-a4-pre-facelift-rear-diffuser-gloss-black\/008480la01~a\/?source=4164511\u0026amp;feature=sold-with\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e. However, self‑tapping screws are recommended in corners and tabs for best fitment. The product requires the removal of the original diffuser; self‑tapping screws are needed to secure fitment of the new diffuser\u003c\/span\u003e\u003ca href=\"https:\/\/www.darksidedevelopments.co.uk\/products\/maxton-rear-valance-audi-a4-s-line-b9-version-with-single-exhaust-tips-on-both-sides.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eQ6: Is professional installation required?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eA:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eYes, strongly recommended.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Professional installation by someone with aftermarket product experience is highly advised. We advise trusting installation to a qualified professional unless you are confident following the provided fitting manual\u003c\/span\u003e\u003ca href=\"https:\/\/www.darksidedevelopments.co.uk\/products\/maxton-rear-valance-audi-a4-s-line-b9-version-with-single-exhaust-tips-on-both-sides.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"APEX Auto","offers":[{"title":"S4 style rear diffuser with tailpipe","offer_id":56760729141551,"sku":null,"price":466.0,"currency_code":"USD","in_stock":true},{"title":"A4 to S5 style rear diffuser with tailpipe(US stock)","offer_id":56760729174319,"sku":null,"price":466.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/3190\/2767\/files\/1_25651cf7-2cee-40ca-990f-ae93df4e238c.jpg?v=1776245514","url":"https:\/\/www.apexautotuning.com\/products\/2017-2019-for-audi-a4-s4-b9-diffuser-with-tailpipe","provider":"Apexauto","version":"1.0","type":"link"}