Manganese-Bronze valve guide set for Toyota Corolla 1.8L 3TC and 1.6L 2TC. Our bronze alloy has the highest heat transfer rate of any bronze valve guide alloy. More than 200% than a nickel-aluminum or aluminum-silicon bronze alloy. Superior to phosphor bronze alloys with 88% copper! These bronze valve guides are stronger than the factory cast iron ones. They will withstand wear much greater than the stock valve guides, and provide better heat transfer aiding in keeping the valves at a lower temperature. This kit includes 4 bronze guides for either intake of exhaust (they are the same), an additional set will be required to complete a head. Made in the United States.
Application : Toyota 3TC and 2TC motors.