{"product_id":"aam-d925355-3-55-ratio-ring-pinion-set-for-9-25-12-bolt-rear-axle","title":"AAM D925355 3.55 Ratio Ring \u0026 Pinion Set for 9.25\" 12 Bolt Rear Axle","description":"\u003cp\u003eKeep your 9.25\" 12 bolt rear axle running true with the American Axle \u0026amp; Manufacturing D925355 ring and pinion set. Engineered specifically for this axle type, this 3.55 ratio gear set includes a 39-tooth ring gear and 11-tooth pinion, paired with a 29-spline pinion and 12-bolt ring gear pattern for a precise, direct fit. Backed by ACES-verified fitment data spanning decades of Ram, Dodge, and Chrysler platforms, this set is designed to restore proper gear mesh and drivetrain performance when replacing worn or damaged components. Each set ships as a complete kit with one ring and pinion pair per application, simplifying your parts order. Whether you're rebuilding a rear differential or upgrading gear ratio, D925355 delivers the manufacturer-matched specifications needed for a proper installation on compatible 9.25\" 12 bolt rear axle housings.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003e3.55 gear ratio matches OE-style axle spec for consistent rear-end performance\u003c\/li\u003e\n  \u003cli\u003e39-tooth ring and 11-tooth pinion provide correct mesh for 9.25\" 12 bolt axles\u003c\/li\u003e\n  \u003cli\u003e29-spline pinion ensures proper fit with compatible driveline components\u003c\/li\u003e\n  \u003cli\u003eOne set per application simplifies ordering with no guesswork on quantity\u003c\/li\u003e\n  \u003cli\u003eBacked by a limited manufacturer warranty for added purchase confidence\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplication Summary\u003c\/h3\u003e1970-1972, 1974 Dodge D100 Pickup 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1970-1973 Dodge Polara 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1971-1974, 1977-1978 Plymouth Fury 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1973 Dodge D100 Pickup 3.2L 3254CC 198CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1973-1974 Dodge Challenger 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1973-1974 Plymouth Road Runner 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1973-1974, 1976-1977 Chrysler New Yorker 7.2L 7211CC 440CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1973-1978 Chrysler Newport 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1974 Dodge Charger 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1974 Dodge D300 Pickup 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1974 Dodge W300 Pickup 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1974-1975 Chrysler Imperial 7.2L 7211CC 440CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1974-1975, 1979-1980 Dodge Ramcharger 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1974-1980 Plymouth Trailduster 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1975 Chrysler New Yorker 6.6L -CC 400CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1975 Plymouth Fury 6.6L -CC 400CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1975 Plymouth Road Runner 6.6L -CC 400CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1976 Dodge D300 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1976 Dodge Monaco 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1976, 1980 Dodge D200 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1977, 1979 Dodge B300 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1977, 1980 Dodge B200 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1978 Dodge Charger 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1978 Dodge W300 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1979 Chrysler Cordoba 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1979 Dodge D100 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1975-1980 Dodge B100 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1976 Dodge Ramcharger 7.2L 7211CC 440CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1976 Plymouth Fury 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1977, 1979, 1981-1987 Dodge D150 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1977, 1980, 1983-1989 Dodge Diplomat 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1977-1978 Dodge D200 7.2L 7211CC 440CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1977-1978 Dodge D300 7.2L 7211CC 440CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1977-1978 Dodge Monaco 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1977-1978 Dodge Ramcharger 6.6L -CC 400CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1978 Dodge B200 6.6L -CC 400CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1978 Dodge B300 6.6L -CC 400CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1978 Dodge D150 7.2L 7211CC 440CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1978-1979 Chrysler New Yorker 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1978-1979 Dodge Magnum 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1978-1979, 1981-1982 Dodge Diplomat 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1979 Chrysler Newport 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1979 Dodge B200 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1979 Dodge D200 4.0L -CC 243CID L6 OHV 12 Valve Naturally Aspirated DIESEL\u003cbr\u003e1979 Dodge W300 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1979-1980 Dodge D300 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1980 Dodge B300 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1980 Dodge D150 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1980 Dodge W300 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1980-1981 Chrysler New Yorker 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1980-1981 Chrysler Newport 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1981 Plymouth Trailduster 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1981, 1983 Dodge D350 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1981-1987 Dodge B150 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1981-1987 Dodge B250 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1981-1987 Dodge D250 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1981-1991, 1993 Dodge W250 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1981-1993 Dodge Ramcharger 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1981-1994 Dodge B350 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1982, 1984-1989 Dodge D350 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1986-1987 Dodge W100 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1986-1987 Dodge W150 3.7L 3687CC 225CID L6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1988 Dodge W100 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1988 Dodge W150 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1988-1991 Dodge B150 3.9L 3906CC 239CID V6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1988-1991 Dodge D250 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1988-1992 Dodge D150 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1988-1994 Dodge B250 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1989 Dodge W100 3.9L 3906CC 239CID V6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1989 Dodge W150 3.9L 3906CC 239CID V6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1992 Dodge D250 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1992 Dodge W250 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1992-1994 Dodge B150 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1993 Dodge D150 3.9L 3906CC 239CID V6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1993 Dodge D250 3.9L 3906CC 239CID V6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e1994, 1997-2000 Dodge Ram 1500 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1995-1996 Dodge Ram 1500 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated CNG\u003cbr\u003e1995-1998 Dodge B2500 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1995-1998 Dodge B3500 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1997-2002 Dodge Dakota 2.5L 2507CC 153CID L4 OHV 8 Valve Naturally Aspirated GAS\u003cbr\u003e1998-1999 Dodge Durango 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e1999-2003 Dodge Ram 1500 Van 5.2L 5211CC 318CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e2000-2001, 2004-2007 Dodge Durango 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated GAS\u003cbr\u003e2001 Dodge Ram 1500 3.9L 3906CC 239CID V6 OHV 12 Valve Naturally Aspirated GAS\u003cbr\u003e2002-2003 Dodge Durango 5.9L -CC 360CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e2002-2003 Dodge Ram 1500 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated GAS\u003cbr\u003e2003 Dodge Dakota 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated GAS\u003cbr\u003e2004, 2006-2007 Dodge Ram 1500 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated FLEX\u003cbr\u003e2004-2010 Dodge Dakota 3.7L -CC 226CID V6 SOHC 12 Valve Naturally Aspirated GAS\u003cbr\u003e2005 Dodge Ram 1500 3.7L -CC 226CID V6 SOHC 12 Valve Naturally Aspirated GAS\u003cbr\u003e2007, 2009 Chrysler Aspen 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e2008 Chrysler Aspen 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated FLEX\u003cbr\u003e2008 Dodge Durango 4.7L -CC 287CID V8 SOHC 16 Valve Naturally Aspirated FLEX\u003cbr\u003e2008-2010 Dodge Ram 1500 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e2009 Dodge Durango 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e2011 Dodge Durango 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated FLEX\u003cbr\u003e2011 Ram Dakota 3.7L -CC 226CID V6 SOHC 12 Valve Naturally Aspirated GAS\u003cbr\u003e2011-2013, 2019, 2023-2024 Ram 1500 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated GAS\u003cbr\u003e2014-2016, 2018 Ram 1500 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated FLEX\u003cbr\u003e2017, 2022 Ram 1500 3.0L 2987CC 182CID V6 DOHC 24 Valve Turbocharged DIESEL\u003cbr\u003e2020 Ram 1500 3.6L 3604CC 220CID V6 DOHC 24 Valve Naturally Aspirated MILD HYBRID EV-GAS (MHEV)\u003cbr\u003e2021 Ram 1500 5.7L -CC 345CID V8 OHV 16 Valve Naturally Aspirated MILD HYBRID EV-GAS (MHEV)\u003cbr\u003e2025 Ram 1500 3.0L 2993CC 183CID L6 DOHC 24 Valve Turbocharged GAS\u003cbr\u003e\n\u003cdiv class=\"-partnumber\"\u003ePart Numbers: D925355\u003c\/div\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e American Axle \u0026amp; Manufacturing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e D925355\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Differential Ring and Pinion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00840382501463\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 13.0000 x 13.0000 x 8.5000 IN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight:\u003c\/strong\u003e 21.2000 PG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1 EA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCover Bolt Quantity:\u003c\/strong\u003e 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 3.55\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePinion Gear Tooth Quantity:\u003c\/strong\u003e 11\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty Type:\u003c\/strong\u003e Limited\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty Duration:\u003c\/strong\u003e 1 Years\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty Description:\u003c\/strong\u003e Limited, see demandaam.com\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"American Axle \u0026 Manufacturing","offers":[{"title":"Default Title","offer_id":47835859386517,"sku":"D925355","price":417.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0496\/4266\/8181\/files\/D925355_B_watermarked.jpg?v=1787718930","url":"https:\/\/mizumoauto.com\/products\/aam-d925355-3-55-ratio-ring-pinion-set-for-9-25-12-bolt-rear-axle","provider":"Mizumo Auto","version":"1.0","type":"link"}