Mercury 35490A20 Shorting Switch Assembly Connector Plug 2cyl 200 20hp 350 35hp Intake Manifolds Thread Length is about 5

Thread Length is about 5 1/2"

Osco 8752 Exhaust Riser Elbow

based on the rest of the parts we have it might be an oldsmobile 455

This is the earlier style that uses a serrated washer (13-39131)

Mercury 35490A20 Shorting Switch Assembly Connector Plug 2cyl 200 20hp 350 35hp Intake Manifolds Thread Length is about 5Part Number(s) Included Mercury 35490A20 Shorting Switch Assembly Connector Harness 20ft Would be equivalent to 35490A15 & 35490A10 as well, but is just longer General Application Compatibility For Mercury 2cyl applications 200 20hp 350 35hp 110 9. 8hp 75 7. 5hp Other Details Freshwater Used Parts Purchase with confidence!