This GM quality restoration part for your C4 Corvette will precisely replace your catalytic converter check valve. This valve is made of high quality steel to ensure maximum durability and OEM fitment.
The catalytic converter check valve stops the exhaust from blowing back to the A.I.R. pump which causes poor engine performance and check engine lights. Replacing your converter valve will ensure that your 1986-1991 C4 Corvette will be in top running order.