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Sierra 18-70938 Exhaust Manifold Molded Hose for MerCruiser Stern Drives

Manufacturer

Picture for manufacturer Sierra

Part Number

18-70938
12 reviews
Sale Price

$41.52

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-70938 is a precision-molded replacement exhaust manifold hose designed to connect the thermostat housing to the port exhaust manifold on MerCruiser stern drive engines. Engineered to meet or exceed original equipment specifications, this hose delivers a reliable, leak-free fit for GM V6 and V8 powerplants.

Key Features:

  • Routes coolant from the thermostat housing to the port exhaust manifold
  • Compatible with MCM/MIE GM V6 & V-8 (305 & 350 CID) engines
  • Meets or exceeds OEM quality standards
  • Pre-molded for precise, drop-in fitment — no cutting or trimming required
  • Sold individually (one hose per package)

OEM Cross-Reference Numbers:

  • Mallory: 9-44057
  • MerCruiser Stern Drive: 32-8066351

Sierra International is a trusted supplier to OEM engine manufacturers and boat builders, offering marine engine and drive parts engineered to withstand the demands of the harsh marine environment. The 18-70938 is a direct bolt-on replacement that restores proper cooling system function quickly and confidently.

Easy to use website. Good price on right product, shipped promptly.

super service and best price on the net

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Great prices. Fast service.

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