Meritor Highway Spindle
The Highway Meritor Spindle is built for heavy-duty, high-torque commercial trucks with Meritor RT‑40‑145 Axles and Meritor MX Series Rear Axles, delivering high-performance durability for highway applications. Designed to meet OEM specifications, this spindle ensures seamless installation and long-lasting reliability.
With precise alignment and exceptional load-bearing capacity, this spindle minimizes wear and tear on suspension and drivetrain components, maintaining smooth operation even under high-stress conditions. Ideal for long-haul trucking and fleet maintenance, the Highway Meritor Spindle provides a dependable solution.
| Type: | Heavy‐duty, high‐torque, Class 8 trucks |
| Recommended Fit For: | Meritor RT‑40‑145 Axles, Meritor MX Series Rear Axles |
| Heat Treatment: | Yes |
| Weight: | |
| Warranty: | 1 year limited warranty |
| Compatible Parts: | Bearing Set 401 (572/580), Bearing Set 403(594A - 592 A) Torque Lock nut 449-4973 , National seal 37003A |
In stock
Description
Built from heat-treated, high-strength steel, the Highway Meritor Spindle delivers exceptional axle performance and reliable weight distribution to ensure stability and control at high speeds.
Its precision-machined bearing surface provides seamless compatibility with wheel hubs and suspension components, smooth rotation and reduced vibration. Designed for superior load distribution, this spindle helps minimize maintenance downtime, making it an ideal choice for freight transport and highway fleets.
Is this the right spindle for the job?
Truck Compatibility – Parts List
This Meritor Highway Spindle is designed to fit Heavy‐duty, high‐torque, Class 8 trucks with Meritor RT‑40‑145 Axles and Meritor MX Series Rear Axles. Here is a list of parts compatible with this spindle:
- Models: • Meritor RT‑40‑145 Rear Axle Assembly, Meritor RR20145 Rear Axle Assembly • Meritor MX185 Rear Axle Assembly
- Bearing Set 401 (572/580)
- Bearing Set 403(594A – 592 A)
- Torque Lock nut 449-4973
- National seal 37003A
- Wheel Seal: Left side 1227‑Z‑1040, Right side 1227‑W‑517
If you’re still in doubt, contact us and we’ll help you find the right product.
Meritor Highway Spindle – Frequently Asked Questions
What is the expected lifespan of your Highway Meritor Spindle?
With proper maintenance, the Highway Meritor Spindle is built to last hundreds of thousands of miles, depending on road conditions and load weight. Regular preventative maintenance inspections and timely lubrication can further extend its lifespan and ensure optimal performance.
What is the installation process for a Highway Meritor Spindle?
Installing a Highway Meritor Spindle requires specialized tools and mechanical expertise to achieve a precise fit and proper alignment. For best results and vehicle safety, we recommend seeking a qualified technician. To learn more about the installation process, visit our Axle Spindle resources or check out our video guides on YouTube.
