Frequently Asked Questions About Mack CX Truck Leaf Springs, Hangers & Acc.
What years and models of Mack CX trucks are these leaf springs compatible with?
Our Mack CX leaf springs and hangers are designed to fit CX613 models from 2001-2010. However, compatibility can vary based on your truck's specific configuration, including wheelbase, suspension type (Mack Camelback or Hendrickson), and whether you have a single or tandem axle setup. We recommend checking your VIN or calling our support team at 1-888-875-7787 with your truck's specifications to ensure proper fitment before ordering.
Are these leaf springs heavy-duty enough for vocational applications like dump trucks or concrete mixers?
Yes, we carry both standard and heavy-duty leaf spring options for Mack CX trucks. For vocational applications, we recommend our heavy-duty springs rated for 40,000-46,000 lb capacity for tandem axles. These springs feature additional leaves and thicker steel construction compared to highway-spec springs. Make sure to match your spring capacity to your truck's GAWR (Gross Axle Weight Rating) found on your door jamb sticker.
Do I need special tools or equipment to install these leaf springs and hangers?
Installing leaf springs requires several specialized tools including a heavy-duty jack or lift capable of supporting your truck's weight, spring compressors, torque wrenches capable of 450-500 ft-lbs for U-bolt nuts, and potentially an air hammer for removing old bushings. The job typically takes 4-6 hours per axle for experienced mechanics. Many customers choose professional installation due to safety concerns and the need for proper alignment after installation.
What's the difference between OEM and aftermarket leaf springs for my Mack CX?
OEM Mack leaf springs use factory specifications and materials, typically featuring shot-peened leaves and exact factory spring rates. Aftermarket options from manufacturers like Dayton Parts or Triangle Suspension often provide comparable quality at 30-40% less cost. The main differences are in warranty coverage (OEM typically 1 year, aftermarket 2-3 years) and minor variations in spring eye bushing materials. Both options work well for most applications when properly matched to your truck's specifications.
How do I know when my leaf springs need replacement versus just new bushings or hangers?
Look for these signs of worn leaf springs: visible cracks in any leaves, permanent sagging causing uneven ride height side-to-side or front-to-back, leaves that have shifted out of alignment, or excessive rust causing delamination between leaves. If your springs are intact but you're experiencing handling issues, worn bushings or bent hangers may be the culprit. Bushings typically need replacement every 200,000-300,000 miles, while properly maintained springs can last 500,000+ miles in highway applications.
