Timing Chain Gasket Set - 18-4378 - Sierra
Price: $10.00
Part # 18-4378
2nd Day Air for $4.99 More Eligible
No Reviews
This item is found in the following Product Families
Replaces OEM part #
  • MERCURY MARINE 27-54529A1
For: GM 454 CID Eng. 325, 330, 340 & 350 Inboards & 300TRS
Kit Contains:
    (1) 18-0889 Fuel Pump Mounting Gasket - replaces O.E. # 27-34213
    (2) 18-0903 Water Pump Gasket - replaces O.E. # 27-49110
    (1) 18-0980 Timing Chain Gasket - replaces O.E. # 27-54529
This product ships in 3 business days.
Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
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: