Sierra Fuel Filter "Gen III Cool fuel system" cartridge

Sierra 18-7977-1 MerCruiser Fuel Filter

Sierra replacement fuel filters are manufactured to meet or exceed OEM requirements.

Features:

Micron rating: 20

Includes 0-Rings

Supersedes: 18-7977

It is recommended to change this filter and your 18-7715 Pre Fuel Filter at the same time for optimal engine performance.

Fits:

2004 & Newer MCM/MIE engine with Gen III fuel cooler

Interchangeable with:

Mallory

9-37827

MerCruiser Stern Drive

35-866171A01

35-8M0093688

Sierra 18-7977-1 MerCruiser Fuel Filter FAQs

• What engines does the Sierra 18-7977-1 MerCruiser Fuel Filter fit? The Sierra 18-7977-1 fuel filter fits 2004 and newer MCM/MIE engines with a Gen III fuel cooler.
• What is the micron rating of the Sierra 18-7977-1 fuel filter? The Sierra 18-7977-1 MerCruiser Fuel Filter has a 20-micron rating.
• Does the Sierra 18-7977-1 fuel filter include O-rings? Yes, the Sierra 18-7977-1 fuel filter includes O-rings.
• What part number does Sierra 18-7977-1 supersede? Sierra 18-7977-1 supersedes Sierra part number 18-7977.
• Should I replace the pre fuel filter at the same time? Yes, it is recommended to change this filter and the 18-7715 pre fuel filter at the same time for optimal engine performance.
• What part numbers interchange with Sierra 18-7977-1? The Sierra 18-7977-1 fuel filter interchanges with Mallory 9-37827 and MerCruiser Stern Drive part numbers 35-866171A01 and 35-8M0093688.