142 Degree Mercruiser Thermostat Kit | Sierra 18-3646

Special Price $24.12 Regular Price $38.19
SKU
SIERRA-18-3646
Brand: Sierra

Show or Hide Price

Qty In Stock: 10
Shipping Icon
Substitute Products
  1. Thermostat Kit | Quicksilver 807252Q3 Quicksilver | QS-807252Q3
    Brand :Quicksilver
    Qty In Stock: 8
  2. Thermostat Kit 142 Degree | EMP 75-00402 EMP | EMP-75-00402
    Brand :EMP
    Qty In Stock: 0
  • Fits Mercruiser model 215 Ford 302 CID raw water cooled engines from 1971 to 1972 with serial number range 3040411 to 3385720
  • Fits Mercruiser model 228 GM 305 CID raw water cooled engines from 1977 to 1980 with serial number range 4765100 to 5907057
  • Fits Mercruiser model 255 GM 350 CID raw water cooled engines from 1975 to 1980 with serial number range 4175500 to 5907057
  • Fits Mercruiser model 260 MIE GM 350 CID raw water cooled engines with serial number range 0B522506 to 0F024999
  • Fits Mercruiser 7.4 MIE GM 454 CID raw water cooled engines from 1988 to 1992 with serial number 0B788366 to D715493
  • Kit includes 18-3551 142 degree thermostat, 18-2917 housing gasket, 18-2844 cover gasket, 18-2553 cover gasket and 18-2834 cover gasket
  • Replaces Mercury 807252Q3
  • Replaces Mallory 9-43151
  • Replaces Quicksilver 807252Q3
  • Replaces Sierra 18-3646D
More Information B2C
Manufacturer Part No. 18-3646
Brand Sierra
Shipping/Dimensional Weight 2.000000
Actual Weight 0.17
Availability In Stock
Application Mercruiser
Ships free when order qualifies Yes
Hazmat Fee No
Notice WARNING- This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65warnings.ca.gov.

File(s)

Sorry, is not an active item in our system. However, we may still be able to help you. Please email us at rajeshk@klizer.com or call us at (866)388-0390 for assistance. Please make sure to have the item number handy when you contact us.

© 2026 Marine Parts Source. All Rights Reserved.