Sierra Fuel Filter 18-7845, 21 Micron, Replaces Mercury 35-802893Q and Yamaha ABB-FUELF-IL-TR

The Sierra 18-7845 is a 21 micron fuel filter designed to protect fuel-injected marine engines from water and particulate contamination in the fuel supply. Ethanol-blended fuel absorbs more water and loosens more particulate matter than non-ethanol fuel, making consistent filtration essential to protect injectors and fuel system components from premature wear. Every engine, regardless of horsepower, requires proper fuel filtration to run reliably.

This filter is rated to flow up to 90 GPH, supporting fuel demand even on higher-output engines. It uses a plastic outer housing and measures 4.35 inches in diameter. The 18-7845 is built as a direct equivalent to the Mercury and Yamaha OEM fuel filters it replaces, allowing it to be installed as a drop-in replacement during routine fuel system maintenance.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7845
• Product Type: Fuel Filter
• Micron Rating: 21 Micron
• Flow Rate: 90 GPH
• Filter Diameter: 4.35 inches
• Outer Material: Plastic
• Weight: 1.01 pounds
• UPC: 808282368975
• OEM Equivalent Part Number: Mercury Marine 35-802893Q, Yamaha ABB-FUELF-IL-TR
• Unit Count: 1

Fitment

Designed for fuel-injected marine engines.

Replaces (OEM)

• Mercury Marine 35-802893Q
• Yamaha ABB-FUELF-IL-TR

Frequently Asked Questions

What micron rating is the Sierra 18-7845 fuel filter? The Sierra 18-7845 is rated at 21 microns, which filters fine particulate and helps separate water that ethanol-blended fuel tends to absorb.

What OEM parts does the 18-7845 replace? It replaces Mercury Marine 35-802893Q and Yamaha ABB-FUELF-IL-TR, so it can be installed as a direct equivalent to either OEM filter.

What is the maximum flow rate of this fuel filter? The Sierra 18-7845 flows at up to 90 GPH, which is sized to feed high-demand fuel-injected engines.

Is the Sierra 18-7845 an OEM or aftermarket part? The 18-7845 is a Sierra aftermarket fuel filter manufactured as a functional equivalent to the Mercury Marine 35-802893Q and Yamaha ABB-FUELF-IL-TR OEM filters.

What is the filter housing made of? The outer housing of the 18-7845 fuel filter is plastic.

How big is the Sierra 18-7845 fuel filter? The filter has a diameter of 4.35 inches.

How much does the 18-7845 fuel filter weigh? The Sierra 18-7845 weighs 1.01 pounds.

Does this filter work with ethanol-blended fuel? Yes, the 18-7845 is designed for use with ethanol-blended fuel, which absorbs more water and loosens more particulate than non-ethanol fuel, making the 21 micron rating and water separation especially useful.

What engines is the 18-7845 intended for? The Sierra 18-7845 is intended for fuel-injected marine engines, where proper filtration is required regardless of horsepower.

How many filters come in a package? The Sierra 18-7845 is sold as a single fuel filter, unit count of 1.

What is the UPC for the Sierra 18-7845 fuel filter? The UPC for the Sierra 18-7845 fuel filter is 808282368975.