| Listed in parts books | Not catalogued by year yet |
HEAD GASKET COPPER 3CYL TRIUMPH/BSA - Anneal before use
Copper head gasket for the Triumph/BSA three-cylinder engine, part 71-4250, needs annealing before installation.
This is the copper head gasket for the three-cylinder Triumph and BSA engines, part number 71-4250, also known in some listings as MC 305 or MC-305. It seats between the cylinder block and the head on the triple-cylinder motor and forms the seal that keeps compression and combustion where they belong.
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Being copper rather than composite, this gasket needs to be annealed before it goes on the engine. Annealing softens the copper back up so it can conform properly to the mating surfaces and seal all three cylinders evenly.
We don't have more detail on this one beyond what's in the catalog description, so if you're not sure this is the right gasket for your particular triple, give us a call before ordering and we'll help confirm.
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