C5 C6 Corvette Billet Adjustable Pinion Bearing Spacer

Corvette Adjustable Pinion Spacer — Exclusive TDP Product

Dialing in the correct pinion bearing preload is one of the most critical steps in any rear differential build — and on the 1997–2013 C5 and C6 Corvette, the factory spacer makes it unnecessarily difficult.

The problem with the factory pinion spacer

The factory GM pinion spacer is a solid-style, one-size component with zero adjustability. The pinion typically remains loose after torquing the nut, forcing repeated disassembly, modification and reassembly to chase the correct preload. Getting it wrong has real consequences — incorrect preload causes inconsistent gear tooth alignment, leading to premature gear wear and eventual gear failure.

The TDP solution

Our exclusive billet steel Corvette adjustable pinion spacer eliminates the guesswork entirely. The two-piece design — upper spacer, lower spacer, and shim pack installed between the two halves — allows the builder to select the exact combination of shims needed to hit the correct preload spec on the first attempt. No repeated disassembly, no frustration, no compromises.

Machined from billet steel for maximum strength and dimensional stability, this spacer handles the demands of both street and high-performance applications without compression or deformation over time.

Included in spacer kit

• Upper spacer
• Lower spacer
• Shim pack

Fitment

• 97-04 C5 Corvettes
• 05-13 C6 Corvette base
• Does not fit C6 Z06/ZR1 (Click here for the C6 Z06/ZR1 version)

Below are items that are typically needed when doing the installation

• C5 Corvette Rear Diff O-Ring & Seal Kit
• C6 Corvette Rear Diff O-Ring & Seal Kit
• C6 Corvette Carbon Rear Diff Clutch Pack Kit
• C5/C6 Corvette Rear Diff Complete Shim Kit