Dorman 22-489 Leaf Spring Assembly - Rear

Dorman 22-489 Rear Leaf Spring Assembly

Dorman 22-489 is a rear leaf spring assembly built from steel with a 7-leaf design, 2.5-inch leaf width, and a 26-inch length. It is a standard replacement leaf spring for Chevrolet P10, P20, P30 and GMC P1500, P2500, P3500 rear suspension applications with wo/Tip Inserts.

Key Features

• Steel construction for rear suspension service
• 7 leaves for load support and ride control
• 2.5-inch leaf width and 26-inch length
• Load rate: 2775
• Black bushings included
• Standard replacement suspension grade
• Rear axle orientation
• End 1 and End 2 use Berlin Eye attachment type
• Part number: 22-489

Detailed Description

This Dorman leaf spring assembly is engineered for rear suspension use on Chevrolet and GMC van chassis applications where the original spring has lost arch, load capacity, or ride consistency. The 22-489 uses a steel spring pack with seven leaves, a 6.25-inch arch length, and a 2.628-inch pack thickness to restore rear support in heavy-duty service. It includes bushings and is listed as a standard replacement for OE-style service on Chevrolet P10, P20, P30 and GMC P1500, P2500, P3500 models. Part number 22-489 is also referenced in OE Solutions interchange listings for related applications.

Compatible fitment includes 1975-1980 Chevrolet P10, rear; 1975-1989 Chevrolet P20, rear; 1975-1999 Chevrolet P30, rear; 1979-1980 GMC P1500, rear; 1979-1989 GMC P2500, rear; and 1979-1999 GMC P3500, rear, all noted wo/Tip Inserts. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Sagging rear ride height
• Reduced payload support
• Excessive rear-end bounce
• Uneven suspension response under load
• Worn or fatigued original leaf spring packs

Installation Notes and Tips

Verify rear axle configuration, spring dimensions, and the wo/Tip Inserts note before installation. Compare the existing spring’s length, arch, leaf count, and bushing style to confirm the correct replacement. Because this assembly is a rear leaf spring for Chevrolet P10, P20, P30 and GMC P1500, P2500, P3500 chassis applications, matching the original suspension layout is important for proper alignment and ride height.

Quality Assurance

Dorman OE Solutions parts are built as direct replacement components for service applications where restoring original suspension function matters. The 22-489 is a steel rear leaf spring assembly with included bushings and OE-style fitment references for the listed Chevrolet and GMC models.