Description
AUTO SLACK ADJUSTER - 28 SPLINE - 1 1/2" - 5 1/2" (DRIVE AXLE)
PART NUMBER(S):
DESCRIPTION:
Model: Auto Slack Adjuster – Drive Axle
Vehicles: Freightliner, Mack, Volvo, Peterbilt, Autocar, Hendrickson, and other heavy-duty truck platforms
• Type: Automatic Slack Adjuster
• Spline Count: 28
• Arm Length: 5.5"
• Camshaft Diameter: 1.5"
• Axle Position: Drive Axle
• Brake Type: Drum Brake
• Construction: High-strength forged steel with corrosion-resistant coating
• Functionality: Maintains consistent brake adjustment automatically
CROSS-REFERENCE(S):
Dana / Spicer 25QD51, 25-QD-261-P2, M16WR1334 | Automann 138.281, 138.2810, 1382810 | Stemco MK42100S | Other 1140, 1140P, 00-20105, 01R801072E, 03-05136, 03-05229, 03637/16167, 05-463, 10000033, 101261, 101262, 101769, 102117, 102118, 10480801, 106204, 106207, 106402, 107108, 107143, 107996, 17A23127, 17A2314355, 20GUNAS1140, 20SIRSA1140, 3398-AS1140, 363716167, 40501502, 5033, 51140P, 65185, A-14767, ACA-0076A700, AS-1140, BA670GRP, BHS-A670, CB22102, CB42100, CP5033, CS140, CS-52320, CS-56007, CS56040, DS56040, FLTAS1140, GUAS1140, GUNAS1040, GUNAS1140, GUN-AS1040, GUN-AS1140, GUR-AS1140, M3370, OTR-51140, OTR51140, PL-1140, R21097003, RB-1140, S-A670, SA1140, SA670, TFAS1140, VIPAS1140, AS1140C8T, MPGS-A670, ATXA670, AS1140-RC, GTPAS1140, ATPA670, PPPAS1140, A670SS, GTSA670, PSAS1140, A35-3275-Z-1144, R-803140
A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.
IMPORTANT INSTALLATION NOTES:
✔ Confirm spline count and arm length match original equipment prior to installation
✔ Apply anti-seize compound to camshaft splines during install
✔ Tighten mounting fasteners to OE torque specs
✔ Verify proper brake function post-installation
✔ Do not reuse hardware from removed unit
✔ Replace both slack adjusters on the same axle simultaneously for optimal performance
Warranty Information