Includes extended thread adapter and dial indicator extension
Allows water-cooled 2-stroke Timing Kit (Part #3801-0030) to be used on air cooled engines with 14 mm spark plugs
Adapter kit does not allow two stroke timing kit to be installed on Yamaha RD two stroke twins when the engine is in the frame but does allow adapter kit 3801-0029 with two stroke timing kit 3801-0030 to work with engine out of frame