Dorman 929-712 Leaf Spring Axle U-Bolt Kit - Front

Leaf Spring Axle U-Bolt Kit for GM Trucks

Dorman 929-712 is a standard replacement leaf spring axle U-bolt kit built from steel with a semi-gloss black finish and Grade 8 hardware. It secures the leaf spring or leaf spring bundle to the underside of the axle on select Chevrolet and GMC front applications, including K10, K20, K30, K5 Blazer, Jimmy, and Suburban models.

This Dorman 929-712 kit uses a 5/8 in fine-thread design with a 6.75 in inside length and 3.063 in inside width. The specific-fit layout and round-bend application details make it a direct-match option for front suspension service on classic GM 4x4 platforms.

Key Features

• Steel construction with semi-gloss black finish
• Grade 8 bolt specification for suspension fastening
• 5/8 in thread diameter with fine threads
• 6.75 in inside length and 3.063 in inside width
• Specific fit for select front leaf spring axle applications
• Nuts included

Application Details

Compatible With front suspension leaf spring axle mounting on select Chevrolet and GMC vehicles, including 1969-1974 Chevrolet Blazer, front; 1975-1986 Chevrolet K10, front; 1975-1986 Chevrolet K20, front; 1977-1986 Chevrolet K30, front; 1975-1986 Chevrolet K5 Blazer, front; 1970-1991 GMC Jimmy, front; and select Suburban and K-series models listed in the fitment data. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Loose or worn leaf spring axle attachment points
• Suspension clunking caused by fatigued U-bolts
• Incorrect clamp fit from mismatched dimensions
• Corrosion-related hardware replacement during suspension repair
• Front axle leaf spring service on older GM 4x4 trucks and SUVs

Installation Notes

Verify leaf spring dimensions, axle tube size, inside length, inside width, and thread diameter before installation. Confirm round-bend application details and front position fitment for the exact vehicle. Use the listed dimensions to match the axle and spring pack before tightening to specification.

Quality Assurance

Dorman supplies this as a standard replacement suspension hardware kit for specific applications. Part number 929-712 is built to match the listed fitment and dimensional requirements for select Chevrolet and GMC front leaf spring axle installations.