Description
Valve shim wear directly impacts cylinder head performance and engine reliability—worn shims cause valve clearance drift that degrades combustion efficiency and increases risk of valve float at high RPM. The PROX Valve Shims 5-pack (29.748220) delivers precision-machined replacements that restore factory clearances without the cost of OEM alternatives. Heat-treated for superior hardness and durability, these shims are built to withstand repeated thermal cycling and maintain consistent performance across extended race seasons or high-mileage street applications.
- 5-pack quantity
- Precision CNC-machined
- Heat-treated for hardness
- Factory-spec tolerances
- Reduced wear profile
- Bolt-on replacement
- OEM-comparable durability
- Cost-effective solution
- MPN: 29.748220
