Moog SB320 Leaf Spring Shackle Bushing - Front Forward, Front Lower or Front Rearward

Leaf Spring Shackle Bushing for GM Trucks and SUVs

The Moog SB320 is a leaf spring shackle bushing built for front suspension service on a wide range of Chevrolet and GMC trucks and SUVs. It uses steel clad rubber construction to support the leaf spring connection while helping restore proper suspension movement and alignment.

Compatible With Chevrolet Blazer, GMC Jimmy, Chevrolet K10, K20, K30, K5 Blazer, and related V-Series and Suburban applications, this Moog leaf spring bushing is made to OE-style dimensions for direct replacement service.

Key Features

• Steel clad rubber construction for suspension isolation and durability
• Leaf spring bushing design for front shackle service
• Meets or exceeds OE manufacturer specifications
• Inner diameter: 0.570 in.
• Outer diameter: 1.510 in.
• Length and leaf spring width: 3.680 in.
• Designed for front forward, front lower, and front rearward positions where listed

Detailed Description

The Moog SB320 leaf spring shackle bushing is engineered for front suspension applications where worn bushings can create looseness, noise, and inconsistent ride control. Its steel clad rubber construction helps maintain a stable connection between the leaf spring and shackle while preserving the compliance needed for normal suspension travel. This part number is commonly searched for Chevrolet Blazer, GMC Jimmy, and Chevrolet K10/K20/K30 front suspension repair, as well as V10, V20, V30, and Suburban leaf spring service.

This part cross-references PowerStop B320 for the same application.

What It Helps Address

• Front suspension clunking from worn leaf spring bushings
• Excessive play at the shackle-to-spring connection
• Uneven suspension response caused by deteriorated rubber
• Noise during compression and rebound over road irregularities
• Restoration of proper leaf spring mounting geometry

Installation Notes and Tips

Verify the vehicle position and leaf spring width before installation. This Moog SB320 bushing is listed for front forward, front lower, and front rearward applications depending on the vehicle. Inspect the shackle, spring eye, and surrounding hardware for wear or corrosion before pressing in the new bushing, and confirm the bushing dimensions match the original part.

Quality Assurance

MOOG is known for ongoing chassis design improvements that focus on longer service life and easier replacement. The SB320 is listed as meeting or exceeding OE manufacturer specifications for the applications shown.