Dorman 929-128 Leaf Spring - Rear

Durable Leaf Spring Assembly for Chevrolet and GMC Trucks

The Dorman 929-128 leaf spring assembly is designed to restore the suspension performance of your Chevrolet Silverado 1500 or GMC Sierra 1500. Constructed from high-quality steel and finished in black, this standard suspension grade leaf spring provides reliable support without requiring axle modifications.

Key Features of the Dorman 929-128 Leaf Spring Assembly

• Material: Heavy-duty steel construction for strength and durability
• Color: Black finish for corrosion resistance
• Leaf Quantity: 3 leaves with a 2.5-inch width each
• Standard suspension grade type suitable for everyday driving
• Includes bushings for smooth operation and reduced noise
• End attachments: Berlin eye on both ends for secure mounting
• Length: 32 inches on both axes with a 7.5-inch arch length
• No helper spring required and no axle modification needed
• Pack thickness of 1.85 inches for consistent ride height

Detailed Description of the Dorman 929-128 Leaf Spring Assembly

This leaf spring assembly is engineered specifically for the Chevrolet Silverado 1500 and GMC Sierra 1500 models, ensuring proper fit and function. The three-leaf design balances load capacity and ride comfort, while the steel material provides the necessary strength to handle daily driving conditions. The black finish helps protect against rust and wear, extending the service life of the suspension component. Both ends feature Berlin eye attachments, which are compatible with factory mounting points, allowing for straightforward installation without axle modifications. Included bushings help reduce vibration and noise, contributing to a smoother driving experience.

Common Suspension Issues Addressed by This Leaf Spring

• Sagging or uneven rear suspension height
• Excessive rear-end bounce or instability
• Worn or damaged leaf springs causing poor load support
• Noise or vibration from deteriorated bushings
• Misalignment due to damaged or fatigued springs

Installation Notes and Tips

The Dorman 929-128 leaf spring assembly is designed for direct replacement on Chevrolet Silverado 1500 and GMC Sierra 1500 trucks without requiring axle modifications. While bushings are included, mounting hardware is not, so ensure you have the necessary bolts and fasteners before beginning installation. It is recommended to have the vehicle properly supported and to follow manufacturer torque specifications during installation. Professional installation is advised if you are unfamiliar with suspension components.

Quality Assurance and Warranty Information

Dorman manufactures this leaf spring assembly to meet or exceed OEM standards for fit, form, and function. The steel construction and protective black finish contribute to long-lasting durability. This part comes with a limited warranty covering defects in material and workmanship, providing confidence in its reliability for your Chevrolet Silverado 1500 or GMC Sierra 1500 suspension repair needs.