These oil line kits allow installation of a pressure gauge to the rocker box and thus to read oil pressure while riding. The lower end line fitting screws into the engine case. Gauge not included.

To mount an oil pressure gauge to the rockerbox on all Shovelhead models from 1966-up and Sportster 1957–85. The adapter replaces the stock rockershaft end plug. The oil pressure gauge is mounted where you can easily read it on your ride.

Tricky adaptor made from top quality aluminum. The dual adaptors were designed to permit the use of an oil pressure gauge without giving up the dash or instrument-mounted oil pressure light. For Big Twins from 1970-1999 (stock exhaust with crossover tube may interfere!).

Oil pressure gauge adaptors with 1/8” NPT inner/outer threads and special outer thread for oil pump or tappet screen hole.