{"product_id":"powerflex-pfr5-4621-bmw-e46-m3-differential-front-bush","title":"Powerflex PFR5-4621 Rear Differential Front Bush - BMW E46 M3","description":"\u003cp\u003e\u003cstrong\u003eSingle replacement bush for the front mounting position of the BMW E46 M3 rear differential.\u003c\/strong\u003e Powerflex PFR5-4621 is separate from the two rear mounting bushes. Choose the Road Series or PFR5-4621BLK Black Series variant.\u003c\/p\u003e\u003ch2\u003eIdentify the correct differential mounting\u003c\/h2\u003e\u003cp\u003ePowerflex specifies the E46 M3 application using original BMW references \u003cstrong\u003e33172282484\u003c\/strong\u003e and \u003cstrong\u003e33172229782\u003c\/strong\u003e. This is not a universal bush for every E46 3 Series. Cars with a changed differential or carrier need their installed mounting arrangement checked individually.\u003c\/p\u003e\u003ch2\u003eOne bush, one front mounting position\u003c\/h2\u003e\u003cp\u003eThe displayed price is for \u003cstrong\u003eone bush assembly\u003c\/strong\u003e, matching the manufacturer's stated vehicle quantity. Front refers to the forward mount on the rear differential, not a front-axle differential or front suspension component. Complete brackets, subframes and rear mounting bushes are not included.\u003c\/p\u003e\u003ch2\u003eComplete the E46 M3 differential mounting refresh\u003c\/h2\u003e\u003cp\u003ePair this front mounting choice with the separately sold \u003ca href=\"\/products\/powerflex-pfr5-4620-bmw-e46-m3-rear-differential-rear-bushes\"\u003ePFR5-4620 rear differential rear bush pair\u003c\/a\u003e when both areas require renewal. Confirm each part by its mounting position rather than ordering several bushes simply labelled differential mounts.\u003c\/p\u003e\u003ch2\u003eInstallation and road use\u003c\/h2\u003e\u003cp\u003eRoad Series and Black Series are selectable catalogue specifications with their own SKUs. Black Series is positioned for track and motorsport use. Changes to mounting stiffness may make drivetrain noise or vibration more noticeable. Diagnose the cause of knocking before assuming one bush will resolve it.\u003c\/p\u003e\u003cp\u003eFollow the Powerflex instructions and inspect adjacent mounts. Browse the \u003ca href=\"\/collections\/powerflex-performance-polyurethane-bushes\"\u003ePowerflex range\u003c\/a\u003e. Confirm the chassis and original components before purchase; there is no blanket fitment guarantee.\u003c\/p\u003e","brand":"Powerflex","offers":[{"title":"Road Series","offer_id":65968504963421,"sku":"PFR5-4621","price":43.12,"currency_code":"GBP","in_stock":false},{"title":"Black Series","offer_id":65968504996189,"sku":"PFR5-4621BLK","price":43.12,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/0411\/2989\/files\/powerflex-pfr5-4621-bmw-e46-m3-differential-front-bush.png?v=1789892785","url":"https:\/\/nineteen72performance.co.uk\/products\/powerflex-pfr5-4621-bmw-e46-m3-differential-front-bush","provider":"Nineteen72 Performance","version":"1.0","type":"link"}