Dorman 929-840 Leaf Spring Axle U-Bolt Kit - Front

Dorman 929-840 Leaf Spring Axle U-Bolt Kit

Dorman 929-840 is a standard replacement leaf spring axle U-bolt kit built for secure axle-to-spring attachment on select Chevrolet and GMC trucks and SUVs. It uses steel construction with a semi-gloss black finish, fine threads, and Grade 8 hardware details for a direct-fit suspension service part.

Key Features

• Steel construction with semi-gloss black finish
• Grade 8 bolt specification with fine threads
• 5/8 in thread diameter and 3 in thread length
• Inside dimensions: 7.75 in and 8.625 in length; 2.875 in and 3.5 in width
• Specific-fit replacement for select front suspension applications
• Nuts included

Detailed Description

This leaf spring axle U-bolt kit secures the leaf spring or leaf spring pack to the underside of the axle, helping maintain proper clamping force in the suspension assembly. Dorman 929-840 is a direct replacement for applications that require a round-bend front U-bolt setup, including select Chevrolet Blazer, K5 Blazer, K10, K20, K30, V10, V20, V30, and GMC Jimmy, K1500, K2500, and K3500 models. This part cross-references Monroe Shocks & Struts (e.g., 362-105) for the same application.

Vehicle Fitment

• Fits 1987-1991 Chevrolet Blazer, front, round bend
• Fits 1969-1974 Chevrolet Blazer, front, round bend
• Fits 1989-1991 Chevrolet V1500 Suburban, front, round bend
• Fits 1989-1991 Chevrolet V2500 Suburban, front, round bend
• Fits 1989-1991 Chevrolet V3500, front, round bend
• Fits 1970-1991 GMC Jimmy, front, round bend
• Fits 1987-1991 GMC V1500 Suburban, front, round bend
• Fits 1987-1991 GMC V2500 Suburban, front, round bend
• Fits 1987-1991 GMC V3500, front, round bend
• Fits 1987-1988 Chevrolet V10 Suburban, front, round bend
• Fits 1987-1988 Chevrolet V20 Suburban, front, round bend
• Fits 1987-1988 Chevrolet V30, front, round bend
• Fits 1987 Chevrolet V10, front, round bend
• Fits 1987 Chevrolet V20, front, round bend
• Fits 1975-1986 Chevrolet K10, front, round bend
• Fits 1969-1986 Chevrolet K10 Suburban, front, round bend
• Fits 1975-1986 Chevrolet K20, front, round bend
• Fits 1968-1986 Chevrolet K20 Suburban, front, round bend
• Fits 1977-1986 Chevrolet K30, front, round bend
• Fits 1975-1986 Chevrolet K5 Blazer, front, round bend
• Fits 1979-1986 GMC K1500, front, round bend
• Fits 1979-1986 GMC K1500 Suburban, front, round bend
• Fits 1979-1986 GMC K2500, front, round bend
• Fits 1979-1986 GMC K2500 Suburban, front, round bend
• Fits 1979-1986 GMC K3500, front, round bend

What It Helps Address

• Loose or weakened leaf spring clamping at the axle
• Suspension service needs on front leaf spring assemblies
• Replacement of worn or corroded U-bolts during axle work
• Restoration of proper spring-to-axle retention on round-bend setups

Installation Notes and Tips

Verify leaf spring dimensions, inside length, inside width, thread diameter, and bend style before ordering. This kit is specific fit, so confirm the vehicle application and front suspension configuration before installation. Inspect the spring pack, axle seat, and mounting surfaces for wear or corrosion before tightening the new hardware to specification.

Quality Assurance

Dorman supplies this as a standard replacement suspension hardware part for select applications. The steel construction, Grade 8 bolt specification, and application-specific sizing support proper service replacement when the original U-bolts are no longer reusable.