{"product_id":"dana-80-pinion-seal-nut-kit-ford-dodge-chevy-with-dana-80-rear","title":"Spicer Rear Pinion Seal \u0026 Lock Nut Maintenance Kit for Ford, Dodge \u0026 GM (Dana 80 Axles)","description":"\u003cp data-path-to-node=\"7\"\u003eStop stubborn rear differential fluid leaks, prevent oil slinging, and maintain critical drivetrain torque specs with this genuine \u003cb data-path-to-node=\"7\" data-index-in-node=\"131\"\u003eSpicer Rear Pinion Seal \u0026amp; Nut Kit\u003c\/b\u003e. Specifically compiled as a direct maintenance package for commercial-grade \u003cb data-path-to-node=\"7\" data-index-in-node=\"241\"\u003eDana 80 solid rear axles\u003c\/b\u003e, this kit supplies the essential original equipment components needed to refresh a weeping input pinion yoke.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eOn heavy-duty truck platforms, the pinion seal serves as the primary fluid barrier at the front of the rear differential housing neck where the driveshaft connects to the yoke. Under continuous high-torque towing, heavy commercial hauling, and extreme temperature cycling, the rubber sealing lip eventually hardens, scores, or cracks, allowing high-viscosity gear oil to escape. A failing pinion seal will quickly coat the underside of your chassis and compromise oil levels, risking severe bearing starvation, gear howling, and costly internal differential damage.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003eWhen replacing the seal, the massive pinion nut must be backed off and discarded. The factory pinion nut is a strictly single-use prevailing-torque structural fastener; once removed, its specialized self-locking threads lose their retention properties. Attempting to reinstall an old nut risks severe back-off failure under the immense torque loads generated by diesel engines and big-block gas configurations. Sourcing a genuine Spicer OEM kit ensures factory-matched thread engagement, uncompromised structural steel tempering, and a premium multi-lip rubber seal engineered to withstand heavy environmental grit, highway water, and intense rotational friction.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eKit Contents:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e(1) Premium Multi-Lip Rear Pinion Fluid Oil Seal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e(1) Heavy-Duty Prevailing Torque Self-Locking Pinion Nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eKit Highlights:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb data-path-to-node=\"13,0,0\" data-index-in-node=\"0\"\u003eTargeted Sealing Overhaul:\u003c\/b\u003e Bundles the primary outer fluid barrier with its mandatory single-use replacement locking nut to complete a clean, secure leak repair.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,1,0\"\u003e\u003cb data-path-to-node=\"13,1,0\" data-index-in-node=\"0\"\u003eGenuine Spicer OEM Quality:\u003c\/b\u003e Sourced straight from the vehicle's original axle manufacturer to guarantee matching factory blueprints, precise dimensions, and uncompromised metallurgy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,2,0\"\u003e\u003cb data-path-to-node=\"13,2,0\" data-index-in-node=\"0\"\u003ePrevents Gearbox Starvation:\u003c\/b\u003e Locks heavy-weight gear oil securely inside the differential pumpkin casting, ensuring continuous lubrication for the massive ring, pinion, and carrier bearings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,3,0\"\u003e\u003cb data-path-to-node=\"13,3,0\" data-index-in-node=\"0\"\u003eCommercial-Grade Durability:\u003c\/b\u003e Built with premium, heat-resistant elastomer compounds and high-tensile steel to survive rigorous commercial hauling and severe fleet use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"14\"\u003e\u003cb data-path-to-node=\"14\" data-index-in-node=\"0\"\u003eVehicle \u0026amp; Axle Fitment:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"15\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,0,0\"\u003e\u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"0\"\u003eAxle Profiles:\u003c\/b\u003e Solid Monobeam Rear \u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"35\"\u003eDana 80 Axles\u003c\/b\u003e (Commonly found on Dual-Rear-Wheel\/Dually and select heavy-duty single-rear-wheel trucks).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,1,0\"\u003e\u003cb data-path-to-node=\"15,1,0\" data-index-in-node=\"0\"\u003eFord Trucks:\u003c\/b\u003e 1988–2016+ Ford F-350 Super Duty (DRW) and F-450 \/ F-550 commercial chassis cabs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,2,0\"\u003e\u003cb data-path-to-node=\"15,2,0\" data-index-in-node=\"0\"\u003eDodge \/ Ram Trucks:\u003c\/b\u003e 1994–2002 Dodge Ram 2500 (with Manual Transmissions) and Ram 3500 dually models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,3,0\"\u003e\u003cb data-path-to-node=\"15,3,0\" data-index-in-node=\"0\"\u003eChevy \u0026amp; GMC Trucks:\u003c\/b\u003e 1991–2002 Chevrolet\/GMC C3500HD, K3500, and Silverado\/Sierra 3500 series trucks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,4,0\"\u003e\u003cb data-path-to-node=\"15,4,0\" data-index-in-node=\"0\"\u003ePosition:\u003c\/b\u003e Rear Differential Housing Center Section — Pinion Input Yoke Neck Station\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spicer","offers":[{"title":"Default Title","offer_id":43562423976010,"sku":"PLAT-SPICER-KIT174","price":44.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/5560\/6858\/files\/10_422c6aa3-8f8e-43f6-9ea6-1607409ead24.jpg?v=1777722634","url":"https:\/\/platinumperformanceparts.com\/products\/dana-80-pinion-seal-nut-kit-ford-dodge-chevy-with-dana-80-rear","provider":"Platinum Performance Parts","version":"1.0","type":"link"}