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What GSC Power Division have done is actually quite simple: they made valve guides that fit properly, easier to install, and shaped to help air flow instead of just copying the OEM design.
Fitment
- EJ20
- EJ25
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.
| SKU | GSC3025-8 |
|---|---|
| Manufacturer's Part Number | 411112 |
| Brand | GSC Performance |
| Product Type | Engine |
| Engine | Cylinder Heads and Valvetrain |






