Sierra 18-70943 Molded Hose, Thermostat to Port Manifold
- Brand:
- Sierra
- Part no:
- 18-70943
Where to buy
View on Amazonpaid link
This is a Sierra molded hose, part 18-70943, that joins the thermostat housing to the port exhaust manifold. It is given for 7.4L, 454 Mag and 502 Mag engines. Sierra lists it as a replacement for Mercury 32-89749-1, so that is the number to compare with your old hose.
Our take
This hose is for the port side only, running from the thermostat housing to the port exhaust manifold on 7.4L, 454 Mag and 502 Mag engines. Confirm your side and engine before you cut the old hose off.