Sierra 18-7903 Oil Filter - Replaces 5033102, 763364 - Fits 9.9 HP & 15 HP 2002-2007 4-Stroke Outboards

The Sierra 18-7903 is a 4-cycle outboard oil filter built for 9.9 HP and 15 HP engines from the 2002-2007 model years. It uses high-efficiency cellulose filter media in a plastic/aluminum housing to trap contaminants from engine oil, meeting or exceeding original equipment filtration performance. The filter has a 14M thread size and installs in place of the factory Evinrude/Johnson filter using the same mounting thread, so no adapters or modifications are required.

Each Sierra 18-7903 filter is manufactured to interchange directly with Evinrude/Johnson part numbers 5033102 and 763364, giving outboard owners a direct-fit replacement option at service intervals. The compact housing measures 0.39 x 0.39 x 0.39 inches and weighs 0.07 pounds, and the filter is sold as a single unit intended for routine oil-change maintenance on compatible 9.9 HP and 15 HP outboards. Sierra backs the filter with its standard limited warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7903
• Product Type: 4-Cycle Outboard Oil Filter
• Material: Cellulose, Plastic/Aluminum
• Thread Size: 14M
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.07 pounds
• Number of Items: 1
• UPC: 808282244880
• Replaces (OEM): 5033102, 763364

Fitment

• 9.9 HP outboards, 2002-2007
• 15 HP outboards, 2002-2007

Replaces (OEM)

• 5033102
• 763364

Frequently Asked Questions

What engines does the Sierra 18-7903 oil filter fit? The Sierra 18-7903 fits 9.9 HP and 15 HP 4-stroke outboards from the 2002-2007 model years.

What OEM part numbers does the 18-7903 replace? It directly replaces Evinrude/Johnson part numbers 5033102 and 763364.

Is the Sierra 18-7903 a genuine OEM part or an aftermarket filter? It is a Sierra-manufactured aftermarket filter engineered to meet or exceed the filtration performance of the original equipment filter it replaces, rather than a factory Evinrude/Johnson part.

What thread size does this oil filter use? The 18-7903 has a 14M thread size, matching the mounting thread on compatible 9.9 HP and 15 HP outboards.

What is the filter made of? The 18-7903 uses cellulose filter media inside a plastic/aluminum housing.

How much does the Sierra 18-7903 weigh? This oil filter weighs 0.07 pounds.

What are the dimensions of the 18-7903 filter? The filter measures 0.39 x 0.39 x 0.39 inches.

How many filters come in a purchase of the 18-7903? Each order includes one Sierra 18-7903 oil filter.

Will the 18-7903 work on any outboard, or only specific horsepower engines? It is designed specifically for 9.9 HP and 15 HP outboards built in the 2002-2007 model years, not for other horsepower ratings or years.

Does Sierra offer a warranty on the 18-7903 oil filter? Yes, the Sierra 18-7903 is backed by Sierra's standard limited warranty.

What is the UPC for the Sierra 18-7903? The UPC for this filter is 808282244880.