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Chrome Rush countdown – 14% off semi truck parts and chrome accessories at 4 State Trucks
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Peterbilt 379 Drive Axle Springs & Hangers

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Find Replacement Peterbilt 379 Rear Leaf Spring Bushings

This product lineup encompass a wide range of essential components for the drive axle suspension system on Peterbilt 379 trucks. This product line includes replacement springs, shock absorbers, bushings, and other hardware necessary to maintain and repair the rear suspension of these popular semi-trucks. The key features of this product line include: - Compatibility with the Peterbilt 379 model, ensuring a perfect fit for your truck. - High-quality, durable components to keep your drive axle suspension in optimal condition. - Repair parts for common wear and tear items like spring bushings and hangers. - Large availability of complete repair kits and individual replacement parts for easy maintenance. - Ability to upgrade or customize your Peterbilt's suspension system with premium components. Investing in quality drive axle components will help maximize the performance, safety, and longevity of your semi-truck on the road. Not only that, if you're really interested in truly fine-tuning your commercial truck's suspension system, consider buying Peterbilt 379 leaf spring hanger accessories, like bushings, shackles or lift blocks, to adjust your ride height. Or secure your axle movement with heavy-duty torque rods (radius rods) and experience better weight distribution and on-the-road handling with replacement steer axle spring hangers for your Peterbilt truck.

Frequently Asked Questions About Peterbilt 379 Drive Axle Springs & Hangers

What do drive axle springs and hangers actually do on my Peterbilt 379?

Drive axle springs support the rear suspension and help distribute the weight of the truck and its load, while hangers are the mounting brackets that attach those springs to the frame rail. Together they keep the rear axles properly positioned, absorb road shock, and maintain consistent ride height under varying loads.

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

Common signs include sagging ride height, uneven tire wear, cracked or broken spring leaves, excessive frame or axle movement, clunking noises over bumps, and visible rust or cracks around the hanger brackets. If you notice any of these symptoms, it is a good idea to have the suspension inspected before the wear leads to further drivetrain or alignment issues.

Will these springs and hangers fit my specific Peterbilt 379 configuration?

Fitment can vary depending on axle capacity, suspension type, and the model year of your 379, so it is important to check part specifications such as spring capacity, leaf count, and hanger bolt pattern against your truck's original equipment before ordering. If you are unsure, having your VIN or current part numbers on hand will make it easier to confirm the correct match.

Can I replace drive axle springs and hangers myself, or should I have a professional do it?

This is heavy-duty suspension work that requires proper lifting equipment, torque specifications, and safety precautions since the truck must be securely supported while the axle and springs are removed and reinstalled. Many owner-operators with mechanical experience and the right shop equipment do handle this job, but if you do not have access to a lift, jack stands rated for the axle weight, and torque wrenches, it is safer to have a qualified truck repair shop complete the installation.

What materials and finishes are available for these springs and hangers?

Drive axle springs are typically made from heat-treated steel for strength and durability, while hangers are commonly cast or forged steel components. Finish options may include raw steel, painted, or powder-coated coatings depending on the manufacturer, which can help provide additional protection against rust and corrosion in demanding on-road conditions.

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