BST BSSP Rear Leaf Spring Hanger & Shackle Kit, Pair for 1999–2015 Silverado/Sierra — Includes Bushings & Hardware

BST BSSP Pair Rear Leaf Spring Hanger Bracket and Shackle Kit (parts 722-032, 722-006) is a direct-fit replacement designed to restore rear suspension alignment and ride comfort on compatible Chevy, GMC and Cadillac trucks and SUVs.

This complete kit replaces worn or damaged leaf spring hanger brackets and shackles with a set that matches factory form, fit and function. Engineered to meet or surpass OEM tolerance, the assembly includes bushings and mounting hardware so you can reinstall the rear spring mounts without sourcing extra parts. It’s intended for owners who need a reliable, long‑lasting swap to address sagging, clunks or misalignment in the rear suspension of select late‑model full‑size GM trucks and SUVs.

Which vehicles does this hanger and shackle kit fit?

This kit covers a wide range of GM light trucks and SUVs. It’s specified for 1999–2015 Chevrolet Silverado and GMC Sierra 1500 models, plus certain 2007–2009 Cadillac Escalade and GMC Yukon configurations. Always verify fitment with your year, make, model and trim before purchase.

• Compatible models: Chevy Silverado and GMC Sierra 1500 (1999–2015)
• Also fits select 2007–2009 Cadillac Escalade and GMC Yukon
• Replaces OEM part numbers such as 12474021, 15640442, 722032, 722-032, 722-006
• Works for both left (driver) and right (passenger) rear mounting points

What comes in the kit and what tools do I need?

The package is supplied as a ready-to-install assembly: two shackle assemblies with bushings, two leaf spring hanger brackets, plus the bolts and locking nuts required for mounting. Because all critical fasteners and bushings are included, you’ll avoid repeat trips to the parts store.

• Kit contents: 2 shackles with bushings, 2 hanger brackets, spring bushings, mounting bolts and locking nuts
• Typical tools: ratchet set, torque wrench, breaker bar, jack and safety stands
• Recommended: penetrating oil for old fasteners and anti-seize for reassembly

How does replacing these parts affect ride and safety?

Fresh hanger brackets and shackles restore proper spring geometry and reduce unwanted movement that causes noise, uneven tire wear and rear‑end sag. While not a guaranteed fix for every handling issue, replacing worn mounts helps return the rear suspension to intended alignment and load transfer under braking and acceleration.

• Improves rear spring alignment and load distribution
• Reduces clunks, looseness and uneven tire wear from worn mounts
• Maintains correct ride height and rear axle positioning

How durable are these replacement components?

BST BSSP builds the kit from robust materials and tests it to meet or exceed OEM standards for service life and strength. The included bushings and quality fasteners are selected to resist wear and provide long-term performance when installed correctly.

• Manufactured to match OEM dimensions and tolerances
• Corrosion-resistant finish on brackets and hardware for longevity
• Bushings sized to absorb movement and minimize noise

Who is this for: This kit is aimed at DIY mechanics, independent repair shops and fleet owners maintaining GM full-size trucks and SUVs built between 1999 and 2015 who need an OEM‑style replacement for worn rear leaf spring hangers and shackles. Choose this kit if you want a complete, bolt‑on solution including bushings and mounting hardware to restore rear suspension performance without aftermarket modifications.