{"product_id":"spicer-5-3212x-u-joint-1555wj-series-isr","title":"Spicer 5-3212X 1555WJ \/ 1550 Series Solid-Cross Maintenance-Free Universal Joint (ISR Style)","description":"\u003cp data-path-to-node=\"7\"\u003eRestore uncompromised torque handling, eliminate harsh driveline vibrations, and protect your commercial or medium-duty truck from costly road failures with this genuine \u003cb data-path-to-node=\"7\" data-index-in-node=\"170\"\u003eSpicer 5-3212X 1555WJ \/ 1550 Series Universal Joint\u003c\/b\u003e. Engineered as a premium, original equipment manufacturer (OEM) replacement component, this Inside Snap Ring (ISR) universal joint is designed to handle extreme rotational loads on high-capacity driveshaft assemblies under heavy vocational service.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eOn medium-duty and commercial vehicles, the driveshaft operates under massive, continuous stress, transferring raw torque from the transmission to the drive axles under heavy payloads. Over long service hours, high highway mileage, or demanding stop-and-go commercial routes, the internal needle bearings within the u-joint bearing caps naturally experience wear or grease breakdown. A failing universal joint will introduce slack into the driveline, manifesting as a loud clunking noise when shifting from reverse to drive, persistent high-speed chassis vibrations, or a squeaking sound that scales with vehicle speed. Left unaddressed, a seized joint can experience a catastrophic structural failure, throwing the driveshaft from the vehicle and causing extensive secondary damage to the transmission housing, air lines, and chassis frame rails.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003eManufactured by Dana Spicer, the global benchmark in drivetrain engineering, the 5-3212X is built from high-strength, cold-formed alloy steel with a solid core architecture. This premium, non-greaseable \"Life Series\" configuration eliminates internal stress-fracture pathways common to drilled grease-channel designs, maximizing pure torsional strength. It comes factory-packed with a proprietary synthetic lubricant and is completely sealed with advanced multi-lip elastomeric boot seals, permanently locking out road grime, water, salt, and dust while eliminating the need for manual greasing intervals.\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) Genuine Spicer 1555WJ \/ 1550 Series Solid-Cross Universal Joint\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e(4) Precision Ground Bearing Cups with Pre-Packed Synthetic Lubricant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003eComplete Set of Heavy-Duty Internal Inside Snap Rings\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\"\u003eMaintenance-Free Life Series:\u003c\/b\u003e Permanently sealed design keeps premium synthetic grease locked inside the journals, maximizing service life and eliminating routine maintenance downtime.\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\"\u003eCold-Formed Solid Cross Rigidity:\u003c\/b\u003e Forged from premium-grade steel without internal grease passages, providing maximum structural density and resistance to twisting or shattering under peak torque loads.\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\"\u003ePremium Multi-Lip Sealing:\u003c\/b\u003e Outfitted with robust elastomeric seals and custom thrust washers to maintain an absolute barrier against water entry, road brine, and environmental debris.\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\"\u003eFlawless OEM Fitment:\u003c\/b\u003e Machined to exact factory tolerances to guarantee a precise press-fit into the driveshaft yoke, preventing rotational runout and restoring smooth operation.\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\"\u003eDrivetrain \u0026amp; Series Specifications:\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\"\u003eYoke Retention Style:\u003c\/b\u003e Inside Snap Ring (ISR) \/ Internal Lock-Up. \u003ci data-path-to-node=\"15,0,0\" data-index-in-node=\"65\"\u003eFits yokes designed for internal retaining rings located on the inner side of the yoke ears.\u003c\/i\u003e\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\"\u003eSeries Identification:\u003c\/b\u003e 1555WJ \/ 1550 Series Architecture.\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\"\u003eBearing Cup Diameter:\u003c\/b\u003e 1.375 inches.\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\"\u003eCommon Applications:\u003c\/b\u003e Medium-duty delivery trucks, commercial box trucks, dump trucks, utility vehicles, school buses, and specialized high-torque industrial machinery utilizing 1550\/1555WJ series drivelines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spicer","offers":[{"title":"Default Title","offer_id":43562416799818,"sku":"PLAT-SPICER-5-3212X","price":106.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/5560\/6858\/files\/12_b7f9f082-020d-4cd9-9670-c06a9de14c64.jpg?v=1777722037","url":"https:\/\/platinumperformanceparts.com\/products\/spicer-5-3212x-u-joint-1555wj-series-isr","provider":"Platinum Performance Parts","version":"1.0","type":"link"}