Mack CV/GU Truck Leaf Springs, Hangers & Acc.

Frequently Asked Questions About Mack CV/GU Truck Leaf Springs, Hangers & Acc.

Will these leaf springs and hangers fit my Mack CV or GU model?

Mack CV and GU trucks were built across multiple years with different frame configurations and suspension setups, so fit can vary even within the same series. Always confirm your truck's exact model year, axle position (front or rear), and suspension type before ordering. If you're unsure, check your VIN or existing part numbers, or contact our parts team for help matching the correct spring, hanger, or bracket to your specific truck.

What is the difference between the hangers, shackles, and bushings sold in this category?

Leaf spring hangers mount the spring assembly to the frame, shackles allow the spring to flex and move with axle travel, and bushings sit inside the hanger or shackle eyes to reduce metal-to-metal wear and absorb vibration. Most trucks need all three components working together, so if you're replacing one due to wear or damage, it's worth inspecting the others for cracking, elongation, or excessive play at the same time.

How do I know if my current leaf springs or hangers need to be replaced?

Common signs include sagging ride height, uneven tire wear, a shifted or leaning cab, clunking or squeaking noises over bumps, visible cracks in the spring leaves, or worn/rusted hangers and shackle pins. If your truck is pulling to one side or the ride feels noticeably rougher than usual, it's a good idea to have the suspension inspected before the issue leads to further damage.

Can I install these parts myself, or should I have a professional handle it?

Leaf spring and hanger replacement involves heavy components under load and often requires lifting and supporting the axle safely, along with torquing hardware to proper specifications. If you have the right tools, a lift, and experience with heavy-duty suspension work, it's doable in a shop setting. If you're not confident working under a loaded frame or don't have the proper equipment, we recommend having a qualified commercial truck technician handle the installation.

Are these leaf springs and hangers rated for heavy-duty or vocational use?

Mack CV and GU trucks are commonly used in vocational applications like dump, mixer, and refuse work, so load capacity matters when selecting replacement springs and hangers. Check the listed capacity and specifications on each product page against your truck's original equipment and duty cycle to make sure the replacement part is suited to how the truck is actually used.