Sierra 18-70938 Exhaust Manifold Molded Hose
- Brand:
- Sierra
- Part no:
- 18-70938
Image: Wholesale Marine
Where to buy
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This is a Sierra molded hose for Mercruiser stern drives. It joins the thermostat housing to the port exhaust manifold. It is listed for GM V06 and V-8 engines of 305 and 350 CID. The part number to match is 18-70938. No inside diameter or pressure rating is given for it.
Our take
This hose is molded to run from the thermostat housing to the port exhaust manifold, so it is a single-purpose fit rather than a hose you cut to length. It is listed for GM V06 and V-8 engines of 305 and 350 CID only.