If a new Selector Box is not installed during an engine overhaul, these Small parts should definitely be replaced. A worn Pin makes shifting difficult, a worn Selector Arm can cause the gears to jump. The following often applies here: small cause, big effect.

Every engine component is upgraded—but the gaskets often aren’t. That’s why we have our SIP PREMIUM Gasket Sets manufactured by a renowned Italian gasket manufacturer and replace all paper gaskets with aramid fiber gaskets.

This material is an asbestos-free blend of cellulose and synthetic fibers and provides a highly effective seal. It’s no coincidence that comparable sealing materials are also used in modern engines.