ARB Air Locker — Toyota 8.9" C-Clip Rear (9.5", 30-Spline) | RD153

The ARB RD153 is an air-actuated, driver-selectable locking differential for the Toyota 8.9" axle — 100% mechanical lock on demand, fully open when disengaged.

Technical specifications

• Ring gear: Toyota 8.9" (a.k.a. 9.5")
• Spline: 30
• Bearing OD: 50 mm
• Config: C-clip
• Ratio range: All ratios
• Material: Forged steel
• Actuation: Pneumatic (air)

Engineering

• Two-piece, ultra-durable design with minimal moving parts for maximum reliability
• Patented, timed pneumatic locking mechanism — high strength with ultra-fast unlocking
• Steel-reinforced, elastomer-bonded annular seal rated for extreme temperatures
• Fully open when disengaged — no effect on on-road drivability or driveline wear
• 5-year warranty

Fitment: Toyota 8.9" C-Clip Rear. Toyota 8.9" (C-clip, 50mm brg), 30-spline, all ratios. C-clip configuration.

Ring-gear sizing: Toyota rear differentials quoted as 8.9-inch and 9.5-inch are frequently used synonymously — the meaningful difference between Toyota rear diffs is usually the spline count (27, 30, 32 or 36 spline), not the nominal ring-gear size. Match your axle by spline count / axle code rather than the quoted size before ordering.

In the box: Air Locker differential, dash activation switch, solenoid valve, air line and bulkhead fitting. An ARB air compressor is required to operate (sold separately) — pair with an ARB CKMA12 (single) or CKMTA12 (twin).

Vehicle fitment

Toyota Land Cruiser 40 Series (FJ40 / BJ40 / BJ42)

• 1969–1974 Toyota Land Cruiser Base (FJ40) — 3.9L I6, Gas
• 1975–1983 Toyota Land Cruiser Base — engine specs unconfirmed, verify axle spline count before ordering
• 1981–1984 Toyota Land Cruiser BJ42 — 4.2L I6 Diesel, 2-Door
• 1982–1983 Toyota Land Cruiser Base — 3.4L I4 Diesel, 2-Door & 4-Door

Toyota Land Cruiser 60 Series (BJ60 / HJ60)

 BJ60LV-KK — 3.4L I4 Diesel, 4-Door

• 1985 Toyota Land Cruiser BJ60 — 3.4L I4 Diesel, 4-Door
• 1986 Toyota Land Cruiser HJ60 — 4.2L I6 Diesel, 4-Door
• 1987 Toyota Land Cruiser HJ60 — 2.4L I4 Diesel, 4-Door

Toyota Land Cruiser 80 Series (FJ80 / FZJ80 / HDJ80)

• 1988–1992 Toyota Land Cruiser Base — 4.0L I6, 4-Door, Gas

Lexus LX 450 (FZJ80)

• 1996–1997 Lexus LX450 Base — 4.5L I6, 4-Door, Gas