Straight Truck Spindle (Meritor – Left)
Designed to withstand the intense demands of Class 6-8 straight trucks, the Straight Truck Spindle (Meritor – Left) delivers the durability and precision needed for high-load applications. Manufactured from high-grade 1040 unalloyed steel, this spindle is heat-treated for superior wear resistance and structural integrity, ensuring long-term performance even in rigorous daily operations.
Meritor axles are the industry standard in heavy-duty trucking, accounting for approximately 70% of Class 8 truck axles in North America. These axles are widely used in Freightliner, Western Star, Volvo, Mack, Kenworth, and Peterbilt trucks, making our Meritor-compatible spindle an essential repair solution for fleet owners and independent operators alike.
Every Straight Truck Spindle undergoes inspection and is packaged with all the necessary components for a quick and efficient installation. Your package includes the spindle, a sleeve, two gaskets, an ABS mount, and bolts.
Please note that installation tools are not included. For a complete list of required tools, refer to the “Required Tools” section below.
In stock
| Type: | Straight truck spindle |
| Recommended Fit For: | Meritor axles, left side |
| Heat Treatment: | Yes |
| Weight: | 32 lbs |
| Warranty: | 1 Year Limited Warranty |
| Compatible Parts: | Inner bearing set 408 and Bearing 39590/ race 39520, Outer bearing 411 and Bearing 47686/ race 47620, National seal 370023A, Pro-Torque Lock nut 449-4974 |
In stock
Description
Renowned for their exceptional lifespan and durability, Meritor axles are built to last 500,000 to over 1,000,000 miles with proper maintenance. However, harsh road conditions, overloading, and inadequate maintenance can lead to premature damage, resulting in broken or compromised spindles.
Replacing an entire straight truck axle can be a costly and time-intensive process, often ranging between $3,000 – $8,000 for the axle alone, with an installation time of 6–10 hours for an experienced technician. While some vehicles may warrant a full axle replacement, many operators are looking for a more cost-effective alternative.
Our Straight Truck Replacement Spindles (Meritor – Left) provide an efficient, budget-friendly solution without compromising on performance or reliability. Unlike full axle replacements, our spindles are designed for fast and straightforward installation, reducing downtime and saving on labor costs. With an average installation time of just 90 minutes, your truck can be back on the road quickly—maximizing productivity and minimizing costs.
Required Tools
Having the right tools and equipment is key to a successful installation. This list covers essential equipment that most shops already have, but we recommend taking a moment to ensure everything is on hand before beginning.
Safety Equipment
- Safety glasses
- Ear plugs
- Welding helmet and gloves
- Face shield
Hand Tools
- Torque wrench
- 2 vise grips
- Sledge hammer
- Chipping hammer
- 5/8 socket
- 5/8” wrench
- 5/8” ratchet
Power Tools & Accessories
- 1/2” impact wrench
- Pencil grinder
- Air blow gun
- 5” grinder with wire wheel, cutting and grinding disks
- MIG or stick welder
- 7018 welding rods
- Shop fan
Specialized Tools
- Stemco Seal Driver with tube
- Acetylene and oxygen tank with cutting and heating torch
Lubricants, Fluids, & Paints
- Red-Tac EP2 Grease
- Cutting fluid
- Brake cleaner
- Black rust paint
Is this the right spindle for the job?
Not sure if this will fit your truck?
This Straight Truck Replacement Spindle is designed to fit the left side Meritor axles. Here is a list of parts compatible with this spindle:
- Inner bearing set 408 and Bearing 39590/ race 39520
- Outer bearing 411 and Bearing 47686/ race 47620
- National seal 370023A
- Pro-Torque Lock nut 449-4974
If you’re still in doubt, contact us and we’ll help you find the right product.
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