*Stock Is Limited!* New English Made Original NOS BSA 500 & 650 Unit Twins Crankshaft Oil Pump Worm Gear. For the unaware, these Worm Gears do wear out! Especially if your Crank isn't shimmed properly! This part does show some shelf wear as it is approx 45+ years old! Still Good and ready to use! Fits all BSA Unit 500 & 650 Unit Twins (Lightning, Star Twin, Rocket, Wasp, Thunderbolt, Firebird Scrambler, Etc) from 1962-1972. Please refer to your parts catalog for proper fitment.
*****Always check your parts book to ensure the best fitment! Will work with other BSA Unit Twins that are not listed abouve!******
•Made in England
•O.E.M Part number is 68-0050