Hedman Oxygen Sensor Hedder Reducer Gasket MT135BK We do not recommend using

We do not recommend using Racing Optics Perimeter Seal Laminated tear offs on Coated Shields (including ALL Z-20 and Z-24 Prism Shields)

Ideal for Engine Swaps

Recovery style caps work when the overflow hose is properly connected to the recovery bottle

1978-1980 Buick LeSabre

Hedman Oxygen Sensor Hedder Reducer Gasket MT135BK We do not recommend usingHedman Hedders 3" 3 Bolt Flange O2 Header Reducers For 2 1 4" Exhaust System; 3 Bolt Triangular Flange Hedman's 3 Bolt flange hedder reducers are for use with Hedman Hedders fitted with 3 bolt gasketed collectors. Many of Hedman's newer hedder models utilize a ball & socket style collector. If your Hedman Hedders have this style of collector they do not require a gasket. Mild steel. These reducers have built in O2 sensor bungs. SOLD INDIVIDUALLY.