1955-81 GM; Leaf Spring U-Bolts; 3-1/4" wide x 6-3/4" long; Fits 3-1/4" Axle Tubes; Pair

Replacement OE style U bolts and nuts for rear leaf springs from OER. Designed to secure the leaf spring pack to the rear axle with factory correct strength and reliability. Each set includes heat treated Grade 8 nuts and F436 heat treated, hardened heavy duty washers for maximum durability and proper clamping force.

• OE style replacement U bolts designed for rear leaf spring applications
• Includes Grade 8 heat treated nuts for superior fastening strength
• F436 hardened heavy duty washers ensure proper load distribution
• Ideal for restoration, repair, or suspension maintenance
• Two pairs required per axle
• Heat treated Grade 8 nuts included
• F436 heat treated washers included
• Direct replacement for original style U bolts

• Thread size: 7/16"-20
• Width: 3-1/4"
• Length: 6-3/4"
• Thread length: 3-1/2"
• These U-bolts are oversized service replacements that are manufactured for custom application rear ends that feature 3-1/4" axle tubes.
• Modification to leaf spring lower mounting plates may be required, fits 3-3/4" center to center mounting holes.

• 1973 - 1974 Buick Apollo

• 1955 - 1957 Chevrolet Bel Air
• 1967 - 1981 Chevrolet Camaro
• 1968 - 1968 Chevrolet Chevy II Nova
• 1957 - 1957 Chevrolet Del Ray
• 1955 - 1957 Chevrolet Nomad
• 1969 - 1974 Chevrolet Nova
• 1955 - 1957 Chevrolet One-Fifty Series
• 1955 - 1957 Chevrolet Two-Ten Series

• 1973 - 1974 Oldsmobile Omega

• 1967 - 1981 Pontiac Firebird
• 1971 - 1974 Pontiac Ventura

• For original style U-Bolts for GM 3" axle tube rear ends, order: B13224K
• For original style U-Bolts tall style lock nuts, order: G4631K