Spicer Differential Outer Pinion Bearing & Race Kit for Dana 44 & Dana 50 Axles

Eliminate catastrophic differential gear howling, stop chronic pinion yoke play, and restore precision rotational geometry to your gear set with this genuine Spicer Differential Outer Pinion Bearing Kit. Specifically engineered to replace the high-stress outer (tail) pinion bearing assembly, this factory-matched cup and cone kit provides a premium repair solution for legendary Dana 44 and Dana 50 axle housings.

The outer pinion bearing handles immense radial and structural thrust loads right where your driveshaft yokes mate to the differential. Over high mileage, intensive towing, or hard off-road use, low fluid levels or gear oil degradation cause the tapered rollers to pit, score, or overheat. This wear results in a characteristic deep whining or rumbling sound that changes pitch with vehicle speed, a loose pinion yoke, and compromised gear mesh alignment that can rapidly destroy your ring and pinion set.

This original equipment manufacturer (OEM) kit includes a matching inner bearing cone and outer race (utilizing the industry-standard high-capacity 2872/2820 footprint). Precision-ground from case-hardened bearing steel, choosing a genuine Spicer replacement ensures strict original equipment tolerances are met—giving your differential the exact structural stiffness and heat dissipation required for smooth, whisper-quiet operation.

Kit Contents:

• (1) Premium Tapered Pinion Bearing Cone (Inner Section)

• (1) Precision-Ground Pinion Bearing Cup / Race (Outer Section)

Kit Highlights:

• Matched Component Pairing: Pre-bundled cup and cone assembly ensures flawless contact patterns across the tapered rollers, eliminating the micro-vibrations caused by mixing unmatched brands.

• Genuine Spicer OEM Quality: Manufactured by Dana to original equipment engineering specifications, providing vastly superior structural fatigue life compared to budget aftermarket alternatives.

• Case-Hardened Construction: Forged from high-cleanliness steel to withstand intense rotational friction and sudden torque loads on heavily loaded 4x4 trucks and SUVs.

• Restores Pinion Backlash: Provides a perfectly concentric foundation to correctly set your pinion depth and bearing preload during a differential overhaul.

Vehicle & Axle Fitment:

• Axle Profiles: Fits Dana 44 (Front or Rear) and Dana 50 (Front) Axle Housings.

• Jeep Models: 1971–1983 CJ5, 1976–1986 CJ7, 1993–1996 Grand Cherokee ZJ, and various classic Wrangler TJ/JK configurations utilizing a Dana 44 housing.

• Ford Models: 1966–1971 Bronco, 1980–1999 F-250, 1999–2002 F-250/F-350 Super Duty, and 2000–2005 Excursion configurations (Front Dana 44 or Dana 50).

• Dodge / Ram Models: 1985–1993 W150, 1994–2001 Ram 1500 (Front Dana 44).

• Chevy / GMC Models: 1969–1980 K10, K20, and K5 Blazer models equipped with a front Dana 44.