ARB 070903SP Spider Block for RD99CE Competition Air Locker

The ARB 070903SP is a replacement spider block designed specifically for the RD99CE Competition Edition Air Locker differential for Ford 9-inch axles. This critical internal component is part of ARB's competition-grade differential system engineered for extreme off-road use and ULTRA4 racing applications.

Key Features:

• Precision-engineered replacement component for RD99CE competition air lockers
• Manufactured from high-grade alloy steel for maximum durability
• Designed to withstand the extreme loads of competitive off-road racing
• Part of ARB's patented two-piece air locker design
• Features four flat sides for proper orientation during installation

The spider block is an essential component within the differential assembly, working in conjunction with the cross pin and side gears to enable the locking mechanism. This replacement part ensures your competition-grade ARB Air Locker continues to deliver reliable traction when you need it most, whether on the trail or in competitive racing environments.