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Fortpro

62143 Leaf Spring for Mack Camel Back Rear Suspension - Replaces 4QK4004A

62143 Leaf Spring for Mack Camel Back Rear Suspension - Replaces 4QK4004A

SKU: F247971

Availability: Out of stock

$846.58 USD
$990.60 USD $846.58 USD
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Important things to Consider

CHECK COMPATIBILITY: Ensure that your OEM part number matches the one in our cross-reference list before making a purchase.

PREVENT UNNECESSARY RETURNS: Don’t rely on appearance alone. Always confirm compatibility by verifying part numbers, not just how the part looks.

TRUCK BRAND MENTION DOES NOT GUARANTEE FIT: If we reference a specific truck brand, it doesn’t imply compatibility with all models. Double-check model specifics to avoid any mismatch.

Shipping Policy

In order to send your purchase, our company may use different freight companies like USPS, UPS and some 3erd Carrier Services for Oversize orders, this will not affect the final price of your order. We will send you all the information in due time. 

For Free Shipping and Freight/Oversize Shipments they are some special term you may check at our Terms & Conditions page.

 

Return Policy

If for any reason you need to return a purchased item, we have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must met the conditions stablished in our Terms & Conditions.

To start a return, you can contact us at admin@maxitrucks.com. 

About this Item

  • Designed to support heavy loads, distributing weight evenly throughout the truck chassis.
  • Acts as a shock absorber, absorbing impacts and vibrations from the road, helping to smooth the ride and protect cargo and the vehicle from damage.
  • Provides lateral and longitudinal stability, ensuring the truck remains balanced during maneuvers and on uneven terrain.
  • Manufactured from high quality steel, it provides superior wear resistance and long life, even in the most demanding conditions.
  • Direct replacement for OEM references 4QK4004A and 750850, allowing quick and easy installation without complications.
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Ensure exceptional performance and unmatched durability for your Mack truck with the Fortpro 62143 Truck Leaf Spring, designed specifically for the Camel Back rear suspension. This leaf spring effectively replaces parts 4QK4004A and 750850, ensuring a perfect fit and superior functionality. Manufactured with high quality steel, the Fortpro 62143 offers excellent absorption of impacts and vibrations, improving the stability and comfort of each ride. Its ability to withstand heavy loads allows for even weight distribution, protecting the chassis and prolonging the life of your suspension system. Improve the reliability and performance of your truck with this essential component.


Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.

Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.

Basic Part Information
Product Line Suspension Category Name Chassis & Suspension
Part Type Rear Leaf Spring Alternate Part Name Spring Assembly, Leaf Spring Assembly, Rear Spring Assembly, Rear Spring
OEM Part Number 4QK4004A
Application/Fitment Attributes
Application Type Semi-Trucks, Heavy Duty Trucks Mounting Position Rear Suspension
Dimensional/Physical Attributes
Material Steel Leaf Pack Thickness (D) 10-3/8 in.
Leaf Spring Count 11 Leaf Width 4 in.
Length (A) 30-5/8 in. Length (B) 28-1/4 in.
Spring Arch Length (C) 6-7/8 in.
Technical/Performance Attributes
Spring Load Capacity 22.000 lb.
Packaging / Logistics Attributes:
Net Weight 402 lb.
Additional Information
Intended Application
  • Compatible With Mack Truck 1970 – 2020 models equipped with Camel Back rear mechanical suspension systems and 55 in. axle spacing, suitable for heavy-duty vocational and highway trucks requiring multi-leaf rear spring assemblies, and engineered to interchange with equivalent Camelback suspension configurations that match the specified geometry, load capacity, and mounting architecture.
  • Always compare with your OEM part number prior to purchase to confirm full compatibility.
  • Hendrickson: 81581
  • Mack: 4QK4004A, SRE62-143
  • Dayton Parts: 62143
  • PAI: 750850
  • Spice: 52629
Dimensions Not Available.