Dana Spicer 25-1550-4X SPL70WJ Greaseable Axle Shaft U-Joint
The Dana Spicer 25-1550-4X Universal Joint is a greaseable SPL70WJ Series axle shaft U-joint designed for demanding front drive axle applications. Built as part of Dana’s Spicer Select line, the 25-1550-4X uses a heavy-duty steel cross, round bearing caps, internal snap-ring retention, and a serviceable grease fitting to provide reliable articulation and torque transfer through the axle shaft assembly.
This joint is commonly used in medium- and heavy-duty 4×4 applications including select Ford F-450/F-550 Super Duty trucks and Chevrolet/GMC C4500 and C5500 Kodiak/TopKick models.
Technical Specifications
- Manufacturer: Dana Spicer / Spicer Select
- Part Number: 25-1550-4X
- Product Type: Drive Axle Shaft Universal Joint
- Series: SPL70WJ
- Style: Internal Snap Ring (ISR)
- Greaseable: Yes
- Grease Fitting Location: Side of cross
- Bearing Cap Diameter: 1.375 in. / 34.925 mm
- Lock-Up / Snap Ring Groove Dimension: 3.780 in. / 96.0 mm
- Bearing Cap Type: Round with ISR groove
- Snap Rings Included: Yes
- Grease Zerk Included: Yes
- Material: Steel
- Seal Material: Rubber
- Approximate Gross Weight: 3.0 lb.
- UPC: 023913808174
- VMRS: 024002046
- Country of Origin: China
Features & Benefits
The Dana Spicer 25-1550-4X incorporates several durability features intended for demanding axle-shaft service:
- High-strength steel construction
- Heat-treated journal cross
- Zinc-phosphate corrosion-resistant coating on the cross and bearing caps
- Greaseable design for routine maintenance
- Internal snap-ring retention for proper axle-yoke fit
- Zerk fitting and snap rings supplied with the joint
- Designed for reliable torque transfer under steering and suspension articulation
Cross-References
- Dana Spicer SPL70-4X
- Dana SPL70-1550XC
- Neapco 3-0157
- Neapco 2-3050
- MOOG 424
- Precision 424
- SKF 3-0157
- SKF UJ424
- Ford 5C3Z-3249-BA
- International / Navistar 2510749C91
Typical Applications
The 25-1550-4X / SPL70-4X is found in select applications such as:
- Ford F-450 Super Duty
- Ford F-550 Super Duty
- Ford F-250 / F-350 Super Duty in certain axle configurations
- Chevrolet C4500 Kodiak
- Chevrolet C5500 Kodiak
- GMC C4500 TopKick
- GMC C5500 TopKick
Installation Note
Axle-shaft U-joints that appear similar can differ in bearing-cap diameter, lock-up dimension, snap-ring location, and axle series. Before ordering, verify the 1.375-inch cap diameter, 3.780-inch internal snap-ring dimension, and SPL70WJ configuration against the original axle assembly.
The Dana Spicer 25-1550-4X is a serviceable, greaseable replacement choice for compatible SPL70WJ axle applications requiring a robust internal-snap-ring U-joint.
