{"product_id":"stellar-automotive-group-4l40e-5l40e-2nd-coast-clutch-molded-piston-fits-cadillac-amp-bmw-2wd","title":"Stellar Automotive Group 4L40E\/5L40E 2nd Coast Clutch Molded Piston fits Cadillac \u0026amp; BMW 2WD","description":"\u003cp dir=\"auto\"\u003e\u003cstrong\u003eStellar Automotive Group 4L40E\/5L40E 2nd Coast Clutch Molded Piston (2WD Cadillac \u0026amp; BMW) – Compatible for 2000-2010\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eStop engine runaway in 2nd gear and burnt 2nd coast clutches with this upgraded molded 2nd coast clutch piston from Stellar Automotive Group (2WD-specific).\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis direct-replacement piston is the critical apply component for the 2nd coast clutch pack in RWD\/2WD versions of 4L40E and 5L40E transmissions found in Cadillac and BMW models. The factory piston commonly cracks or loses its bond under heat and mileage, causing internal leakage that weakens coast apply — leading to no engine braking in 2nd gear, high RPM overrun when decelerating, and rapid clutch failure. This molded piston with permanently bonded rubber seal restores full coast-down function, delivers smooth engine braking in 2nd gear, and protects your 2nd coast clutch pack for reliable performance.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003ePerfect fit for popular 2WD models including:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul dir=\"auto\"\u003e\n \t\u003cli\u003eCadillac CTS (2004-2010)\u003c\/li\u003e\n \t\u003cli\u003eCadillac SRX (early 2WD)\u003c\/li\u003e\n \t\u003cli\u003eBMW 3 Series (E46\/E90 2WD), 5 Series (E39\/E60 2WD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eSymptoms of a failing 2nd coast piston:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul dir=\"auto\"\u003e\n \t\u003cli\u003eEngine revs freely when coasting in 2nd gear\u003c\/li\u003e\n \t\u003cli\u003eNo engine braking in 2nd gear\u003c\/li\u003e\n \t\u003cli\u003eRatcheting noise or slipping on overrun\u003c\/li\u003e\n \t\u003cli\u003eBurnt 2nd coast frictions on teardown\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eDon’t let a $50 piston destroy your 2nd coast pack — install the Stellar Automotive Group molded 2nd coast piston and enjoy controlled deceleration again.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All parts are distributed, not designed or manufactured, by Stellar Automotive Group.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAdd this essential 4L40E\/5L40E 2WD rebuild part to your cart today and feel the engine braking return instantly!\u003c\/p\u003e","brand":"Trans Parts Direct","offers":[{"title":"Default Title","offer_id":52425244377269,"sku":"55765 PAFT","price":26.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1006\/3872\/0181\/files\/55765-PAFT-scaled.jpg?v=1786618930","url":"https:\/\/transpartsdirect.com\/products\/stellar-automotive-group-4l40e-5l40e-2nd-coast-clutch-molded-piston-fits-cadillac-amp-bmw-2wd","provider":"Trans Parts Direct","version":"1.0","type":"link"}