Valve Guides are a wear-item. They wear over time and eventually should be replaced. The higher you rev, and the harder you push your engine, the more important tolerances become. If you are spending the time and money to upgrade your valvetrain, be sure your tolerances are correct by replacing your high mileage guides with brand new aftermarket valve guides.

What we have done is actually quite simple, we made valve guides that fit properly, are 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.


Toyota 2JZ
Intake and Exhaust Valve Guide-Depth Gauge

• Standard sized sold as set of 24

Intake Valve Guide Specs

GSC3032	Standard (in/mm)
Total Length	1.520 / 38.61
Outer Diameter	0.4347 / 11.04
Valve Stem Diameter	6mm

Exhaust Valve Guide Specs

GSC3031	Standard (in/mm)
Total Length	1.600 / 40.64
Outer Diameter	0.4347 / 11.04
Valve Stem Diameter	6mm

Additional Applications:

• Supra MKIV Twin-Turbo 93-98 JZA80
• Supra MKIV Non-Turbo 93-98 JZA80
• SC300/Soarer 92-00 Z30
• IS300 01-05 XE10
• GS300/Aristo 91-97 S140
• GS300/Aristo 98-05 S160