This product has been discontinued.
Sierra
Exhaust Manifold Elbow - 18-1978 - Sierra
Price: $259.24
 Discontinued
Save: $104.75
(28% Off $363.99)
Part # 18-1978
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(Discontinued)
This item is found in the following Product Families
Description Customer Questions & Answers Shipping
Replaces OEM part #
  • MERCURY MARINE 76771A2
  • MERCURY MARINE 76771A3
For: V-8 Inboard Applications Only
Use with:
    Manifold: 18-1950-1, 18-1951-1, 18-1958, 18-1962, 18-1954-1, 18-1955-1, 18-1956-1
    Elbow Gasket: 18-2833
    Mounting Kit: 18-4362
Q:
Re mercury marinereplacement parts for 76771A3 what is the difference between the two? Why does the Mallory have a flange like piece sticking out the exhaust and the other does not?
A:
Mallory design is more universal to late model inboard engines, so it accommodates more motors.

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