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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.
The GSC Power-Division valve guides are made from true C67410 Manganese Bronze and turned on a dedicated precision CNC turning center. What this means for you and your installer is less time fitting guides to the head due to holding the tightest tolerances in the industry with the best quality control possible.
| Model | Fitment Confirmation |
|---|---|
| EJ205 | ✓ |
| EJ255 | ✓ |
| EJ257 | ✓ |
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 P65Warnings.
| SKU | GSC3026-8 |
|---|---|
| Manufacturer's Part Number | 411477 |
| Brand | GSC Performance |
| Product Type | Engine |
| Engine | Cylinder Heads and Valvetrain |






