Exhaust Manifold Gasket Set - 18-4397 - Sierra
Price: $42.71
Part # 18-4397
2nd Day Air for $2.99 More Eligible
Hurry! Only 1 left in stock
No Reviews
This item is found in the following Product Families
Replaces OEM part #
  • MERCURY MARINE 27-46820A1
For: Mercruiser GM 454 (7.4L) CID Eng; All 325, 350, 400 HP Jet Drives 330 HP S/N 6083144 & BELOW
Kit Contains:
    (2) 18-0418 Exhaust Mounting Gasket - replaces O.E. # 27-46820
    (4) 18-0885 Exhaust Elbow Mounting Gasket - replaces O.E. # 27-48042
    (4) 18-2832 Manifold End Cap Gsk. - replaces O.E. # 27-48043-1
This product ships in 1 business day.
Add to Cart and enter your Postal Code to determine the shipping charges.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Do you need Professional Installation? has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer: