Description
The ARB Air Locker GM 8.5"/10 Bolt/AAM 860, 28 SPL (Part Number: arbRD221) delivers on-demand traction by locking your GM differential instantly at the flick of a switch. Designed for GM 10-bolt axles with 8.5‑8.6″ ring gear diameter and 28 spline shafts (front or rear axle), this pneumatic locker enhances off‑road capability without compromising on-road drivability.
Its rugged two‑piece design ensures maximum strength and durability under extreme conditions. Quiet and smooth pneumatic activation allows on‑the‑fly engagement at any vehicle speed, making it excellent for both trail and daily driving.
Features & Benefits:
- Instant Traction On Demand: Pneumatic locking delivers 100% traction when needed.
- Operates at Any Speed: Engage/disengage while driving smoothly.
- Durable Two‑Piece Design: Minimal parts for added reliability.
- Steel Reinforced Seals: Built to withstand harsh environments.
- Includes Activation Switch, Solenoid Valve, Air Line & Bulkhead Fitting: Everything needed for installation (air compressor sold separately).
- Wide Gear Ratio Compatibility: Works with all gear ratios from 2.73 up.
- 5‑Year Warranty: Backed by ARB's industry-leading coverage.
Product Specifications:
- Axle Type: GM 10‑Bolt (8.5–8.6″ ring gear) – Front or Rear
- Spline Count: 28
- Shaft Diameter: 1.20″
- Locker Type: Pneumatic Air Locker
- Activation: Air compressor (not included)
- Warranty: 5 Years
Fitment:
This ARB Air Locker (arbRD221) fits GM vehicles equipped with 8.5″ or 8.6″ 10‑bolt axles with 28 spline shafts, specifically:
- 1995–1999 Chevrolet Blazer (4.3L V6)
- 1996–2004 Chevrolet Blazer LS (4.3L V6)
- 1995–2001 Chevrolet Blazer LT (4.3L V6)
- 2003–2005 Chevrolet Blazer ZR2 (4.3L V6)
- 2006–2008 Chevrolet Tahoe (4.8L/5.3L V8)
- 2007–2008 Chevrolet Tahoe PPV (5.3L V8)
- 2008 Chevrolet Tahoe Hybrid / LTZ / Z71 (5.3L/6.2L V8)
- 2009–2012 GMC Canyon SLE/WT (2.9L/3.7L V6)
- 2009–2012 Chevrolet Colorado (All applicable models with GM 10‑bolt 28‑spline axle)
- Assorted GM vans (G10, K10, K1500, Suburban, Jimmy) between 1982–1999, if equipped with 28‑spline GM 10‑bolt axle.
