Supertech Exhaust and Intake Valve Guides for a Toyota 4AGE 16V - GDE-T4AG-SM-8

Supertech Valve Guides are precision-machined from high-quality Manganese Bronze material to ensure exceptional durability and dimensional stability. Designed specifically for Toyota 4AGE 16V applications, these guides are built to withstand the rigors of both performance street use and full-on racing environments.

Engineered to work in perfect harmony with Supertech’s low-friction black nitrided valves, our valve guides provide optimal fitment, reduced wear, and outstanding long-term reliability. For high-powered setups where exhaust temperatures are extreme, we offer copper alloy guides with up to 3x higher thermal conductivity compared to Manganese Bronze — ideal for improved heat dissipation in forced induction engines.

No matter your performance needs, Supertech delivers the right valve guide solution — precision-made, race-proven, and ready for peak output.

Features

• Precision-machined for exact fit in Toyota 4AGE 16V cylinder heads
• Manganese Bronze construction for intake and standard-duty exhaust use
• Optional copper alloy for high-powered exhaust valve applications
• Compatible with Supertech black nitrided valves for low friction and extended life
• 40.5mm overall guide length for proper valve alignment

Benefits

• Improved heat management and wear resistance
• Increased engine longevity under high stress
• Reliable performance at high RPM and temperature extremes
• Supports tight valve clearances and consistent valve motion
• Ideal for NA, turbocharged, or supercharged engines