Description
Power Products 65174P automatic slack adjuster in the Bendix Versajust pattern: 5.5″ arm length, 1.5″ diameter, 28-spline female bore, Easy-On (EO) yoke with 5/8″ adapter thread. Direct replacement for Bendix K043197 and Haldex AS1040 on Class 7–8 truck and trailer drive-axle and trailer-axle wheel ends. Maintains brake stroke within FMVSS 121 limits without manual re-adjustment.
Signs You Need a New Automatic Slack Adjuster
- Brake stroke exceeds FMVSS 121 limits at the most recent inspection
- Slack adjuster does not click or take up clearance during repeated brake applications
- Visible play, looseness, or worn clevis pin holes in the existing adjuster
- Pull or uneven brake balance across the axle that wasn’t fixed by re-shoeing
Specifications
| Manufacturer | Power Products |
|---|---|
| Part Number | 65174P |
| Part Type | Automatic slack adjuster, Bendix Versajust pattern |
| Arm Length | 5.5″ |
| Spline Diameter | 1.5″ |
| Spline Count | 28 |
| Yoke Type | Easy-On (EO) clevis |
| Adapter Thread | 5/8″ |
| Torque Rating | 20,000 in-lb |
| Operating Temperature | -40°F to 158°F |
| Lube Fitting | 45° elbow grease zerk |
Cross References
This part replaces or is equivalent to the following part numbers:
- Bendix: K043197 (Versajust), 065174
- Haldex: 40010141, AS1040
- Automann: 137.281, 137.2810
- OTR: OTR65174
- Power Products: 65174P
- Also known as: AS1140
Applications
This automatic slack adjuster fits any Class 7–8 air-brake wheel end built around a 1.5″-28 spline S-cam camshaft with a 5.5″ arm span, including:
- Drive axles on Freightliner, Kenworth, Peterbilt, Volvo, Mack, and International tractors
- Steer axles using a 5.5″ / 28-spline configuration (verify span before installing)
- Trailer axles on Hendrickson, Meritor, Eaton, and similar wheel ends
- Vocational chassis: dump trucks, refuse trucks, mixers, and fire/EMS apparatus
Verify camshaft spline count, spline diameter, and arm span (typically 5.0″, 5.5″, or 6.0″) against the existing slack before ordering. Always replace slack adjusters as an axle pair, not single-side. Adjust to the chassis manufacturer’s installation stroke before returning to service.
