Description
Part number RD149 is the ARB® Air Locker for the Nissan M226 rear axle — 32-spline, 10-bolt ring gear — covering select 2004–2022 Nissan Frontier, 2004–2009 Nissan Titan, 2005–2015 Nissan Xterra, and 2009–2012 Suzuki Equator applications.
IMPORTANT: This Air Locker requires an ARB air compressor for operation, sold separately. Verify your specific axle code (M226), spline count (32), and ring gear bolt count (10-bolt) before ordering. Fitment spans multiple model years and trim levels — confirm compatibility for your exact year, model, and trim using the vehicle fitment data on this listing.
The ARB® Air Locker is a pneumatically operated locking differential that delivers 100 percent traction on demand without compromising normal open-differential behavior when unlocked. When engaged, it prevents the internal differential gears from rotating independently, tying both axle shafts directly to the ring gear so both wheels receive equal driving force simultaneously. When disengaged, the unit functions as a conventional open differential, maintaining standard on-road handling and driveline wear characteristics.
At the core of the Air Locker is a steel-reinforced, elastomer-bonded annular seal engineered to operate reliably across extreme climatic temperature ranges. Activation is pneumatic: a solenoid valve directs compressed air into the differential housing, engaging the locking mechanism instantly. The patented “timed” locking design provides both high engagement strength and ultra-fast unlocking response — the locker releases as quickly as it engages, giving the driver precise, repeatable control over traction.
The Air Locker’s two-piece differential housing is constructed from steel and designed for maximum strength with minimal moving parts. Fewer components means fewer potential failure points, contributing to the unit’s long-term reliability in demanding off-road environments. Operation is controlled from the cab via an included activation switch, so the driver never needs to exit the vehicle to engage or disengage the locker. ARB backs the Air Locker with a 5-year warranty.
- Fits the Nissan M226 rear axle, 32-spline, 10-bolt ring gear — covering select 2004–2022 Nissan Frontier, 2004–2009 Nissan Titan, 2005–2015 Nissan Xterra, and 2009–2012 Suzuki Equator (all gear ratios)
- Provides 100% traction on demand without affecting on-road drivability or driveline wear when unlocked
- Pneumatically operated locking system — engages and disengages instantly at any speed
- Patented “timed” locking mechanism for high engagement strength and ultra-fast unlocking
- Two-piece steel housing with minimal moving parts for maximum durability and reliability
- Steel-reinforced, elastomer-bonded annular seal rated for extreme climatic temperature ranges
- Cab-controlled activation switch included — engage and disengage without leaving the driver’s seat
- Kit includes: Air Locker differential, activation switch, solenoid valve, air line, and bulkhead fitting
- ARB air compressor required for operation — sold separately
- 5-year warranty
- Sold individually
| Part Number | RD149 |
| Axle | Nissan M226 |
| Position | Rear |
| Spline Count | 32 |
| Ring Gear Bolts | 10-bolt |
| Shaft Diameter | 1.41 in |
| Gear Ratio | All |
| Material | Steel |
| Color | Silver |
| Prop 65 | No |
| Warranty | 5 Years |
The RD149 is engineered specifically for the Nissan M226 rear axle in 32-spline, 10-bolt ring gear configuration, covering all available gear ratios. Confirmed vehicle coverage includes select trim levels of the 2005–2022 Nissan Frontier, 2004–2009 Nissan Titan, 2005–2015 Nissan Xterra, and 2009–2012 Suzuki Equator. Use the year, make, model, and trim fitment data on this listing to confirm compatibility for your exact vehicle before purchasing.