



Engine Breather Valve - Reed Type
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Engine Breather Valve - Reed TypeReed Type Positive Crankcase Ventilation Valve. Valve hooks to engine top breather vent and allows expelled air out but reed prevents air re entering quickly so a very small vacuum is created in the crankcase. A small power increase has been noted during dyno tests (most notable on pre 1977 engines) and the crankcase vacuum helps prevent crankcase pressure from pushing oil past oil seals and case joints. Part Number: 15 0677
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