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Mack Truck Spindle
Due to popular demand, we’re excited to introduce our Mack truck replacement spindle as the latest addition to our product lineup.
Made from robust 4140 steel and enhanced through a unique multi-stage heat treatment, these spindles deliver the trusted strength and durability you’ve come to expect from us.
Each Mack spindle is inspected, packed with care, and shipped from our warehouse. The package includes a spacer sleeve, required for select truck models, along with a comprehensive installation manual.
In stock
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| Type: | Drive axle spindle |
| Recommended Fit For: | Mack trucks |
| Heat Treatment: | Yes |
| Weight: | 24 lbs |
| Length: | 441 mm |
| Warranty: | 1 Year Limited Warranty |
In stock
Description
With an estimated 300,000 Mack trucks currently on the road in North America, it’s no surprise that this spindle is in high demand. Our Mack replacement spindle packs an incredible amount of toughness into just 24 lbs of masterfully hardened steel.
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
- Ear Plugs
- Gloves
- Face shield
- Safety glasses
Specialized Tools
- Acetylene and oxygen tank with cutting and heating torch
Hand Tools
- Sledge hammer
- Wire brush
Lubricants, Fluids
- Red-Tac EP2 grease
- Brake cleaner
Additional Tools Available in Our Store
The seamless structure of this spindle makes it the perfect candidate to leverage a key property of 4140 steel—its thermal resilience and exceptional hardenability. After precision machining, this spindle responds exceptionally well to our multi-stage heat treatment process, resulting in a durable, wear-resistant Mack replacement spindle built to withstand high-stress conditions.
Spindle Maintenance
Do You Have a Problematic Spindle?
Wheel bearing maintenance is a crucial yet often overlooked aspect of commercial vehicle upkeep. Many truck owners are unaware of the importance of regular wheel bearing checks and lubrication changes. If neglected, this can lead to damaged spindles and dangerous situations as break pads can become compromised by leaking bearing lubricants and grease.
When inspecting your truck for signs of trouble, listen for unusual noises like whirring, clicking, or clunking, particularly while turning. Unusual vibrations can also be an indicator as well as visual signs like bearing grease leaking from the boot. A quick visual inspection of the inner side of the wheel’s rim will help identify any issues.
Is this the right spindle for the job?
Not sure if this will fit your truck?
The Mack replacement spindle is designed to fit most Mack trucks. Here is a list of parts compatible with our spindle:
- Outer Bearing 424
- Inner bearing 423
- Lock nut 448-4865
If you’re still in doubt, contact us and we’ll help you find the right product.
