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SKU: RD131

ARB Air Locker Differential, Toyota 8 in. IFS Front, 30 Spline, 50 mm Bearing for Toyota Land Cruiser (1998-2008) & Lexus LX 470 (1998-2007)

By ARB
$1,299.95

180-Day ReturnsOn uninstalled, unused parts Real humans who wheel(920) 249-7744 Financing availableAffirmPayPal CreditFor qualified buyers at checkout Secure checkoutEncrypted payment
Confirmed fit: 1998–2008 Lexus LX
Verified to fit the 1998–2008 Lexus LX.
Warranty Information

Vendor warranty summary

ARB Warranty

At a glance: 5 years on Air Locker, 3 years on ARB-branded products, 1 year/25,000 miles on wear items

This is ARB's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 4, 2026.

Coverage by product

Product or component Coverage
Air Locker (personal use) 5 years, unlimited miles
ARB-branded products (personal use) 3 years, unlimited miles
Wear items: bushes, bearings, shackles, pins, U-bolts, batteries, globes, gas struts 1 year or 25,000 miles, whichever comes first
Air Locker & ARB-branded products (commercial use) 3 years or 60,000 miles, whichever comes first
Wear items (commercial use) 1 year or 25,000 miles, whichever comes first
  • Keep your NVMOS order confirmation — proof of purchase is required.

What's covered

  • Defects in materials and workmanship from the purchase date
  • Applies when the product is fitted per ARB's instructions and legal requirements and used for its intended purpose
  • ARB chooses whether to repair, replace or refund

What's not covered

  • Normal wear and tear
  • Incorrect fitting or use beyond what the product was designed for
  • Misuse, negligent operation or poor maintenance
  • Modified products; accident or vandalism damage
  • Competitive events such as racing or rallying
  • Use in underground mining or other highly corrosive environments
  • Consequential losses; liability capped at the purchase price

How to make a ARB warranty claim

  • Contact ARB as soon as you find the defect
  • Do not remove the product from the vehicle before contacting ARB
  • Submit the online warranty claim form with your purchase receipt
  • ARB reviews the claim and decides on repair, replacement or refund

ARB contact: Phone: +1 (619) 940-1769 · Claim page / support

Bought it from NVMOS? Start with us.

Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to ARB, and help it along either way.

Shop ARB at NVMOS

See all ARB products, lead times and FAQs →

Disclaimer: The information on this page describes ARB's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: ARB official warranty information. Last updated on nvmos.com: October 4, 2026. See our return policy for NVMOS's own terms.

About the brand

ARB

ARB is the Australian 4x4 company behind the Air Locker, and it builds most of what goes on an overland truck: bumpers, lockers, compressors, roof racks, awnings, fridges, drawers and recovery gear. NVMOS carries the ARB lineup for Toyota, Jeep, Ford, Chevy, GMC, Ram and Nissan trucks and SUVs.

Based in: Melbourne, Australia · Lead time: In-stock items typically ship in 24-48 hours; large items may ship by freight

ARB warranty: 5 years on Air Locker, 3 years on ARB-branded products, 1 year/25,000 miles on wear items. Read the full summary

Warranty terms are set by ARB, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.


ARB Air Locker Differential, Toyota 8 in. IFS Front, 30 Spline, 50 mm Bearing for Toyota Land Cruiser (1998-2008) & Lexus LX 470 (1998-2007)

An ARB Air Locker for the Toyota 8 in. IFS front axle with 30 splines and a 50 mm carrier bearing. It is listed for the Toyota Land Cruiser 1998-2008 and the Lexus LX 470 1998-2007.

Why it works
Traction on demandLocks for full traction when you ask for it and drives like an open differential otherwise.
Timed lockingA timed locking mechanism is built for high strength and fast unlocking.
Few moving partsTwo-piece design keeps moving parts to a minimum.
Cab controlSwitch-operated from the driver's seat.
Specifications
Spec Detail
Part number RD131
Fitment Toyota Land Cruiser 1998-2008; Lexus LX 470 1998-2007
Axle Toyota 8 in. IFS, front
Spline count 30
Shaft diameter 1.31 in.
Carrier bearing 50 mm I.D.
Ratio All
Before you order

Distributor notes list 78, 79, 100 and 105 Series applications with the 8 in. IFS and 50 mm carrier bearing. An air compressor is required and sold separately. ARB install instructions: download the PDF. Not sure it fits your build? Call real humans at (920) 249-7744 with your year, trim and setup and we will confirm it.

Frequently asked questions
What does it fit?

The Toyota Land Cruiser 1998-2008 and Lexus LX 470 1998-2007 with the 8 in. IFS front axle, 30 splines, a 1.31 in. shaft and a 50 mm carrier bearing. It suits all ratios.

Do I need a compressor?

Yes. An air compressor is required for operation and is sold separately.

What comes in the kit?

The Air Locker differential, activation switch, solenoid valve, air line and bulkhead fitting.

What is the warranty?

ARB covers its own and Old Man Emu products for 3 years with unlimited miles (Air Lockers 5 years); wear items like bushes, shackles, pins and U-bolts are covered for 1 year or 25,000 miles.

Finish the whole truck in one order

Complete your Lexus LX build

More parts that fit your Lexus LX and pair well with this one — matched and ready to install.

Build total (1 items)
$1,299.95
The complete look for your Lexus LX.
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Everything else that fits this truck

More for your Lexus LX

Picked from the 65 parts we carry for the Lexus LX, matched to 1998–2008 model years. Check the years and trim in each title — or call us and we’ll confirm fit.

Shop all 65 parts for your Lexus LX →

Specifications

  • Part number: RD131
  • Fitment: Toyota Land Cruiser 1998-2008; Lexus LX 470 1998-2007
  • Axle: Toyota 8 in. IFS, front
  • Spline count: 30
  • Shaft diameter: 1.31 in.
  • Carrier bearing: 50 mm I.D.
  • Ratio: All

ARB Air Locker Differential, Toyota 8 in. IFS Front, 30 Spline, 50 mm Bearing for Toyota Land Cruiser (1998-2008) & Lexus LX 470 (1998-2007) FAQs

What does it fit?

The Toyota Land Cruiser 1998-2008 and Lexus LX 470 1998-2007 with the 8 in. IFS front axle, 30 splines, a 1.31 in. shaft and a 50 mm carrier bearing. It suits all ratios.

Do I need a compressor?

Yes. An air compressor is required for operation and is sold separately.

What comes in the kit?

The Air Locker differential, activation switch, solenoid valve, air line and bulkhead fitting.

What is the warranty?

ARB covers its own and Old Man Emu products for 3 years with unlimited miles (Air Lockers 5 years); wear items like bushes, shackles, pins and U-bolts are covered for 1 year or 25,000 miles.

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