BSA Pre-Unit Singles Twins Chrome Oil Tank Filter 42-8426 42-8334 A7 A10 B31 B33 BSA Pistons Measures 3/8" with a thread

Measures 3/8" with a thread pitch of 26 (CEI)

Select which tray you need according to our part numbers and what your Triumph calls for

Triumph 650 rods

* This is the best you can buy

Trident & T150) from 1969-1970

BSA Pre-Unit Singles Twins Chrome Oil Tank Filter 42-8426 42-8334 A7 A10 B31 B33 BSA Pistons Measures 3/8" with a threadNew English Made BSA Singles & Twins Chrome Oil Tank. This oil tank filter comes with a marvelous English chrome finish just like O. E. M. The best. Screen measures a slightly over 1 3 4". Fits many BSA Pre Unit Singles, and Twins from the A7, A10, B31, B33, B34, Goldstar, RGS, Road Rocket, Etc from approx 1954 1963. Please refer to your parts catalog for proper fitment. *****Please note that this filter may fit other BSA models that are not listed