{"product_id":"serpentine-belt-idler-pulley-11281748130-80mm-for-bmw-m50-m54-s65-size-11281748130","title":"Serpentine Belt Idler Pulley 11281748130 80mm for BMW M50 M54 S65 - size: 11281748130","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e80mm Upper Deflection Idler Pulley — Replaces 11281748130 \/ INA 532041810 Direct aftermarket accessory drive belt deflection\/idler pulley (upper fixed roller)​ for BMW inline-6 hydraulic-tensioner engines. Replaces BMW 11281748130, 11-28-1-748-130, and consolidated 11287841228 \/ 11-28-7-841-228​ (also covers legacy 11281726181 \/ 11281730571 \/ 11281738061 \/ 11281738605), crossing INA 532 0418 10, Gates 38030-class, Continental V55006-class, SKF VKM38004-class, Febi 06051, Topran 500258, URO 11-28-1-748-130. Specs: 80mm OD × 24-25.2mm width, smooth 6PK face, offset bolt hole (not centered), sealed deep-groove ball bearing, GF-PA rim with rubber dampening layer, ~0.18kg.\u003c\/li\u003e\n\u003cli\u003eFor BMW Inline-6 M50\/M52\/M54\/S54 \u0026amp; S85 V10 (1991-2013) Engineered for E34 525i, E36 320\/323\/325\/328\/M3(S50\/S52), E39 525\/528\/530i, E46 323\/325\/328\/330\/M3(S54), E60 M5(S85), E63 M6(S85), E53 X5 3.0i, Z3 2.5\/2.8\/3.0\/M, Z4 E85 2.5\/3.0\/M, E90\/E92 M3(S65)​ on hydraulic belt tensioner with upper deflection pulley.\u003c\/li\u003e\n\u003cli\u003eFixes Cold-Start Chirp, Belt Edge Wear \u0026amp; Throwing Belt Resolves idler faults: belt chirps on cold start, squeals at idle\/AC load, rim plastic cracks radially, bearing grows sandy, belt rides off edge and chews fan shroud. Original rubber dampening layer hardens and cracks after 100k mi; offset bore wears oval. New pulley restores belt tracking. Spin test old: any play or roughness = dead; compare OD to 80mm and check hole is offset.\u003c\/li\u003e\n\u003cli\u003eShare Generator Bolt to Upper Bracket, Reuse Bolt + Torque Remove serpentine belt, support upper bracket, remove 1× M8 bolt shared with alt\/gen bracket (no separate stud on most M54), slide old pulley off shoulder, clean shaft, seat new pulley aligning offset hole to bracket eccentric, reuse original class-10.9 bolt, torque 28 N·m (21 ft-lb), refit belt checking all grooves. Critical:​ this pulley has an offset (eccentric) bore​ — if your old pulley has a centered hole, you are looking at the tensioner-arm roller (different number), not this deflection pulley.\u003c\/li\u003e\n\u003cli\u003eConfirm 80mm + Offset Hole + Upper Fixed Roller Before Ordering This pulley has 80mm OD, smooth face, 1 offset bolt hole (not centered), 11281748130 stamp, and mounts on the upper fixed bracket (no spring, no tension function). Before ordering, photo old pulley and confirm (1) ~80mm OD, (2) offset\/eccentric hole, (3) fixed to upper bracket not on tensioner arm, (4) stamp 11281748130, (5) engine is M50-M54\/S54 inline-6 or S85 V10. Applications outside this scope (N42\/N46 4-cyl, N52\/N54\/N55 using 11287535860, mechanical-tensioner E36, M20\/M30, V8 non-S85) use different pulley numbers and are not covered.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NEWHOW","offers":[{"title":"Default Title","offer_id":50451319324912,"sku":"B0G5MVG7P6-size-11281748130","price":28.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/8464\/5360\/files\/31xW7hXf0aL.jpg?v=1789377003","url":"https:\/\/wrenchvanta.com\/products\/serpentine-belt-idler-pulley-11281748130-80mm-for-bmw-m50-m54-s65-size-11281748130","provider":"WrenchVanta","version":"1.0","type":"link"}