ARB Airlocker 31 Spl Ford 8.8In S/N - ARB RD81
ARB Airlocker 31 Spl Ford 8.8In S/N - ARB RD81
Click to zoom in

ARB Airlocker 31 Spl Ford 8.8In S/N

ARB
ARBRD81
837290004766
Differentials
19 Units In Stock
$ 1,299.95
$ 1,299.95

This ARB drivetrain component is the Airlocker 31 Spl Ford 8.8In S/N for 1990-1997 Ford Aerostar. Confirm the exact axle or differential model, spline count, gear ratio, carrier break, bearing and seal requirements, air-system compatibility, and all application notes before ordering.

Key Features

  • Fitment Info 1:Axle: Ford 8.8 in.

Fitment

Years Make Model Application
1990-1997 Ford Aerostar Base
1990-1994 Ford Aerostar Eddie Bauer
1990-1994 Ford Aerostar XL
1990-1994 Ford Aerostar XL Plus
1991-1994 Ford Aerostar XL Sport
1990-1997 Ford Aerostar XLT
1990-1997 Ford Aerostar XLT Plus
1991-1997 Ford Aerostar XLT Sport
1983-1993 Ford Bronco Custom
1985-1996 Ford Bronco Eddie Bauer
1990-1996 Ford Bronco XL
1983 Ford Bronco XLS
1984-1992 Ford Bronco XLT
1994-1996 Ford Bronco XLT
1983 Ford Bronco XLT Lariat
1993 Ford Bronco XLT Lariat
1992 Ford Bronco XLT Nite
1995-1996 Ford Bronco XLT Sport
1984-1986 Ford Bronco II Base
1984-1990 Ford Bronco II Eddie Bauer
1987-1990 Ford Bronco II XL
1988-1990 Ford Bronco II XL Sport
1984-1985 Ford Bronco II XLS
1984-1990 Ford Bronco II XLT
1989-1990 Ford Bronco II XLT Plus
2003-2008 Ford Crown Victoria Base
2010-2011 Ford Crown Victoria Base
2006-2009 Ford Crown Victoria Fleet
2003-2009 Ford Crown Victoria LWB
2003-2011 Ford Crown Victoria LX
2004-2006 Ford Crown Victoria LX Sport
2003-2011 Ford Crown Victoria Police Interceptor
2003-2005 Ford Crown Victoria S
2005 Ford Crown Victoria Special Edition
1983 Ford E-100 Econoline Custom
1983 Ford E-100 Econoline XL
1983 Ford E-100 Econoline Club Wagon Custom
1983 Ford E-100 Econoline Club Wagon XL
2003-2014 Ford E-150 Base
2006-2007 Ford E-150 Chateau
2006-2014 Ford E-150 XL
2006-2014 Ford E-150 XLT
2003-2005 Ford E-150 Club Wagon Chateau
2003-2005 Ford E-150 Club Wagon XL
2003-2005 Ford E-150 Club Wagon XLT
55 additional validated applications are available through the vehicle-fitment filter.

Specifications

Brand ARB
Manufacturer Part Number RD81
Product Type Differentials
Condition New
Configuration Airlocker 31 Spl Ford 8.8In S/N
Color Silver
Fitment Info 1 Axle: Ford 8.8 in
Position Rear
Shaft 1.32 in
Spline 31
Ratio All
Material Steel
Ford 8.8 in Position Rear

What's Included

One new ARB differential in the exact configuration and quantity identified by this listing. Brackets, wiring, air lines, fittings, switches, fasteners, fitting kits, fluids, covers, and accessories are included only when expressly stated for this exact part.

About ARB

ARB develops vehicle-specific four-wheel-drive equipment, including protection, suspension, Air Lockers, compressed-air systems, racks, recovery equipment, lighting, and touring accessories. Every application, load rating, interface, and included component remains exact-part specific.

Important Disclosures

  • California Proposition 65 warning applies. Review the current manufacturer warning before handling or installation.

Related Parts

Frequently Asked Questions

How do I confirm this fits 1990-1997 Ford Aerostar?
Match the axle or differential model, spline count, gear ratio, carrier break, bearing and seal requirements, and every application note.

Does an ARB Air Locker include the compressor and air system?
Only components expressly listed for this exact part are included. Compressors, manifolds, switches, air line, bearings, seals, and installation kits may be separate.

Is professional differential setup required?
Differential installation requires correct backlash, bearing preload, gear contact, torque, sealing, and air-line routing. Qualified drivetrain installation is recommended.

Installation Instructions

  1. Confirm ARB part number RD81, the complete application, and every required supporting component before beginning work.
  2. Use the correct service procedure to inspect the axle and differential, then set bearings, backlash, contact pattern, fasteners, seals, and air-line routing to specification.
  3. Fill with the specified lubricant, test air-system operation when applicable, inspect for leaks and abnormal noise, and recheck after the initial driving cycle.
ARB

ARB

Shop ARB 4x4 equipment by exact manufacturer part number, vehicle application, axle, rack platform, compressor requirement, and recovery rating. This collection includes Air Lockers, bumpers, underbody protection, BASE Rack components, air systems, recovery equipment, lighting, camping gear, and service parts for off-road and overland builds. ARB Air Lockers and Drivetrain Parts ARB Air Lockers provide selectable differential lock for supported axle applications. Confirm the axle model, spline count, carrier break, gear ratio, compressor requirement, and every application note before ordering. Differential covers, switches, solenoids, air lines, and service components must match the installed locker system. Bumpers and Vehicle Protection Vehicle-specific bumpers, winch bars, skid plates, rock protection, and mounting systems depend on the complete year, make, model, trim, body configuration, sensors, cameras, and factory equipment. Review the fitment table and included hardware for ...

View ARB Products
Differentials

Differentials

Performance differentials, limited-slip differentials, locking differentials, and traction upgrades are stocked at Black Ops Auto Works. Shop clutch-type LSDs, helical gear LSDs, automatic lockers, selectable air lockers, electronic lockers, spool-style race components, differential carriers, truck and Jeep lockers, import performance LSDs, and axle-specific units for Subaru WRX and STI, Nissan Z and Skyline, BMW M, Mazda Miata, Porsche, Ford 8.8, Dana axles, GM trucks, Ram trucks, and off-road builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 235 differential SKUs across limited-slip designs, locking systems, axle spline counts, carrier cases, street and track traction upgrades, off-road configurations, and drivetrain-specific fitment. What This Differential Collection Covers A differential splits torque between driven wheels while allowing different wheel speeds through ...

View Differentials Products
Differentials & Components

Differentials & Components

Differentials and components at Black Ops Auto Works include diff braces, diff covers, rebuild and overhaul kits, differential bushings and mounts, limited-slip differentials, yokes, and final drive gears built for street, towing, off-road, and racing applications. Black Ops Auto Works carries 1,332 drivetrain SKUs from Yukon Gear and Axle, ARB, OS Giken, SuperPro, and Per4mance Development, spanning Hellcat and Trackhawk platforms, trucks, Jeep Wrangler, and sport compacts. What This Collection Covers This collection combines fifteen related differential and drivetrain categories, including diff braces, diff covers and gaskets, rebuild and overhaul kits, install kits, seal kits, bushings, mounts, housings, dropouts, spider gears, yokes, complete differentials, and final drive gears. Product Types in This Collection Shoppers will find billet differential braces for high-horsepower RWD platforms, nodular iron and aluminum diff covers, master overhaul kits, differential-to-cradle ...

View Differentials & Components Products
Drivetrain

Drivetrain

Drivetrain parts for high-horsepower Mopar, truck, Jeep, and import platforms are stocked at Black Ops Auto Works. Shop differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, and driveline hardware for Hellcat, Trackhawk, TRX, HEMI, LS, LT, Coyote, and turbocharged import platforms. Every drivetrain part is filterable by vehicle platform, drivetrain layout, transmission type, and power level so the correct part ships the first time. Black Ops Auto Works carries 4,765 drivetrain SKUs across differentials, axles, clutches, and transmission hardware. What This Category Covers The drivetrain transfers power from the engine to the wheels and includes the transmission, clutch, driveshafts, axles, differentials, ring and pinion gears, wheel hubs, wheel bearings, U-joints, shifters, mounts, and bushings. Upgrading these components improves power delivery, durability, and reliability under incr...

View Drivetrain Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×