{"product_id":"performance-exhaust-header-manifold-for-bmw-e46-e39-z3-z4-m52-m54-inline-6-engine-lhd-only","title":"Mirror-Polished 3-Into-1 Exhaust Header Pair for BMW E46 E39 Z3 Z4 M52 M52TU M54 LHD","description":"\u003cdiv\u003e\n\u003ch3\u003eDESCRIPTION\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003eThis two‑piece 3‑into‑1 exhaust header manifold is exclusively built for left‑hand‑drive BMW M52, M52TU and M54 inline‑6 engines. \u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003eDual‑collector layout reduces exhaust interference and improves scavenging effect, bringing improved throttle response and enhanced natural inline‑six exhaust tone. TIG welded construction with CNC‑machined flanges and pre‑welded O2 sensor bungs, complete with gaskets for direct bolt‑on installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eConstructed from 201 stainless steel with polished mirror surface finish. Dual‑collector 3‑into‑1 structure processes cylinders 1‑3 and 4‑6 separately to minimize exhaust pulse overlap. Every joint is TIG welded for structural strength. Independent CNC‑machined three‑port flanges guarantee tight leak‑free sealing against cylinder head. Pre‑welded O2 sensor bungs allow straightforward oxygen sensor mounting. This item fits left‑hand‑drive vehicles only, not compatible with RHD versions. Retains factory mounting points, no heavy modification required for street tuning builds.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eVEHICLE FITMENT\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW 3 Series E46\u003c\/strong\u003e — Car \/ Sedan \/ Coupe, M52 \/ M52TU \/ M54 Inline‑6 Engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW 5 Series E39\u003c\/strong\u003e — Car \/ Sedan, M52 \/ M52TU \/ M54 Inline‑6 Engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW Z3 Roadster\u003c\/strong\u003e — Car \/ Roadster, M52 \/ M52TU \/ M54 Inline‑6 Engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW Z4 E85\u003c\/strong\u003e — Car \/ Roadster, M52 \/ M54 Inline‑6 Engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cblockquote\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eFit models: 323i, 325i, 328i, 330i; 525i, 528i, 530i; Z3 2.2i,2.5i,2.8i,3.0i; Z4 E85 2.2i,2.5i,3.0i\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\nImportant Note: \u003cstrong\u003eLeft‑Hand Drive (LHD) vehicles only, NOT for Right‑Hand Drive (RHD)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructure Design\u003c\/strong\u003e: Two‑piece dual‑collector 3‑into‑1 layout, optimizes scavenging for inline‑six motor, reduces exhaust gas interference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 201 stainless steel, mirror polished surface finish\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelding Craft\u003c\/strong\u003e: Full TIG welded joints for structural strength and durability\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Performance\u003c\/strong\u003e: Independent CNC‑machined 3‑port flanges, precise positioning, leak‑free sealing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Port\u003c\/strong\u003e: Pre‑welded O2 sensor bungs, supports original oxygen sensor installation\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment Restriction\u003c\/strong\u003e: Strictly for Left‑Hand Drive (LHD) vehicles, RHD is not supported\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type\u003c\/strong\u003e: Direct bolt‑on, matches OEM mounting geometry, no heavy modification needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTECH SPECIFICATIONS\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Two‑Piece Exhaust Header Manifold Set\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Material\u003c\/strong\u003e: 201 Stainless Steel\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Layout\u003c\/strong\u003e: Dual‑collector 3‑into‑1 per bank\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Treatment\u003c\/strong\u003e: Mirror Polished\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelding Process\u003c\/strong\u003e: TIG precision welding\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Spec\u003c\/strong\u003e: CNC‑machined independent 3‑port exhaust flanges\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra Ports\u003c\/strong\u003e: Pre‑welded O2 sensor bungs\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Engine\u003c\/strong\u003e: M52, M52TU, M54 Inline‑6\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Side\u003c\/strong\u003e: LHD Only, incompatible with RHD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eWHAT'S IN THE BOX\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e1 x Pair exhaust header manifolds\u003c\/div\u003e\n\u003cdiv\u003eFull Set OEM Matching Installation Gaskets \u0026amp; Hardware Kit\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wanmax Racing","offers":[{"title":"Default Title","offer_id":55138785132916,"sku":"WM-BMW-E46-E39-Z3-Z4-M52-M52TU-M54-LHD-3IN1-HDR-PAIR","price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0990\/7244\/2740\/files\/ExhaustHeadersforBMWE46323i325i328i330iM52M54_T304StainlessSteel-1_1.jpg?v=1786514802","url":"https:\/\/wanmaxracing.com\/products\/performance-exhaust-header-manifold-for-bmw-e46-e39-z3-z4-m52-m54-inline-6-engine-lhd-only","provider":"Wanmax Racing","version":"1.0","type":"link"}