Acura RDX Rack Boot

A rack boot protects a steering gear connection; a CV boot covers a joint on a drive axle. Similar accordion shapes do not make the two parts interchangeable.

A stain alone does not establish a fluid leak. GM notes that grease can liquefy and stain the bellows on certain vehicles; check fluid loss and inspect for an active leak before deciding on a steering-gear repair.

The bellows is a protective cover, not the rack's internal hydraulic seal. Fluid collecting inside the boot requires diagnosis of the steering gear and leak source as well as any damaged boot.

Clamps and other hardware vary by package. The kit description should identify the included parts; arrange the correct retaining hardware when it is not supplied.

If the repair requires removing or adjusting a tie rod, its position can affect toe alignment. MOOG recommends an alignment after outer tie-rod replacement; follow the vehicle's procedure for the work performed.