1957-1974 CORVETTE EXHAUST HEAT RISER VALVE - 2", RIGHT HAND SIDE.
STOCK REPLACEMENT HEAT RISER VALVE FOR ALL 58-74 SMALL BLOCK CORVETTES.
GM PART NUMBER: 3746838.
NOTE: WHEN INSTALLING THE HEAT RISER, THE BUTTERFLY WEIGHT GOES TOWARDS THE REAR OF THE CAR.
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