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M Part number is 37-1000 or W1000
Can replace the Early 68-0285 Gear only if you have the Correct Set-Up
T100T & T100R) from 1965-1974
Looking for an easy and quick way to replace your spark plug wires
Replaces both Triumph and BSA factory part numbers 61-7013
BSA Unit Twins Oil Pump Tachometer Worm Gear Spindle 68-0310 1965-72 A65L A65S Needle Bearing M Part number is 37-1000*Just Arrived!* New English Made BSA Unit Twins Oil Pump Rev (Tachometer) Counter Oil Pump Worm Drive. Did your Tachometer Gauge Fail? Or did your Cable bind resulting in a Broken Worm Gear? Well we have the Solution to your Problems! This New Rev Counter Worm Gear is as good as it gets! Brand New Production made on New Tooling! Correctly Machined, Designed & Hardened! Just as good, if not better then O. E. M.! Fits BSA Unit 500 & 650 Twins