SRM High Delivery Oil pump Pre-unit BSA twins A7/A10 #42-0115

High
delivery oil pump. The high precision made internals with close
tolerances give a more efficient oil feed and return and also prevents
oil bleed past the gears when the bike is standing for long periods of
time.

Oil
pump kit comes with a crankshaft worm drive gear, locking tab
washer,locking left hand thread nut, oil pump gasket, fixing bolts and
fitting instructions. Rev drive tabs are standard for all the oil pumps.

Each
oil pump is individually tested for feed and return rates, and bleed
test, as part of SRM`s special products quality control.

We
also recommend to replace the Oil pressure release valve at the same
time to ensure your oil system is at its optimum best , our part number
SRM-71.2370

Fits all BSA A7 and A10 models up to 1963

Oil
pump will fit both standard engines with the main bush, and
SRM/Devimead needle roller converted engines with no modifications
required. Some inner timing covers may have some "casting flash" (
excess alloy) just above the oil pump from the BSA manufacturing
process, it is usally a very small amount that has to ground away.

Full
instructions supplied with the kit, including how to bleed prime the
oil system before the engine is started for the first time after an
engine rebuild or oil pump change.

Note , will fit early Long Stroke BSA A7 1947 to 1949 , but some material may have to be relieved from the inner timing cover