English made new Triumph Pre-Unit Twins Oil Pipe Junction Gasket. If your oil junction block is leaking chances are this gasket is bad. Gasket replaces Triumph part number 70-1529 and E1529 – apply gasket dry for best results. Fits Triumph 650 pre-unit twins (Bonneville, T120, TR6, T110, etc) up to 1962. Also fits Triumph 350 and 500 pre-unit twins (3T, 5T, Speed Twin, etc) up to 1956. Please refer to your parts catalog for proper fitment.Made in EnglandO.E.M Part number is 70-1529 or E1529