ARB Airlocker 31 Spl Ford 8.8In S/N

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

Specifications

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

• Shop all ARB products
• ARB Diff Cover Blk Ford 8.8
• ARB Diff Cover Ford 8.8
• ARB Airlocker 31 Spl Ford 9In S/N

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.