Mercury SIERRA Exhaust Manifold 18-1957-1

Mercury SIERRA Exhaust Manifold 18-1957-1

Model number:

89011A8, 807078A6


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Available online only

Hurry! Only 4 left in stock!

Caution : Kimpex Canada ONLY sells and ships in Canada.

*Prices displayed on this web site are exclusive for online orders and might be different in store.

Part number :704903
Port & Starboard
Replaces: 89011A8, 807078A6
454 Engine Cubic Inches
Fits most Mercruiser (GM) V-8 big blocks with center riser
Use with:
Exhaust Manifold Gasket: 18-0418
Mounting Kit: 18-8532

List of manufacturers (OEM) part numbers that are compatible with Kimpex numbers.

  • 18-1957-1
  • 807078A6
  • 18-1957-1
  • 704903