GM 400 SBC 6.6L PowerBond PB1050N Dayco Harmonic Balancer Damper V8 Fuel Lines & Filters 3905998 and possibly others)

3905998 and possibly others)

8L V8  302 models cylinder head have a smaller hole drilled for the head bolts

Upper Case: 378319

Generally MerCruiser 5

I couldn't get this to pass my resistance test

GM 400 SBC 6.6L PowerBond PB1050N Dayco Harmonic Balancer Damper V8 Fuel Lines & Filters 3905998 and possibly others)Part Number(s) Included Dayco PowerBond PB1050N Harmonic Balancer Damper General Application Compatibility From what I could find it was just 6. 6L 400 SBC applications 1976 1980 2 piece rear main seal engines. (which they all were during the 1976 1980 time period) Other Details Not something we typically sell but was mixed in with some other parts we received. Good condition. Purchase with confidence!