Sierra Fuel Filter 18-79781, Replaces 5035974, Fits 25HP (2006-07) and 90/115/140 4-Stroke (2005-06) Outboards

The Sierra Fuel Filter 18-79781 is a replacement fuel filter engineered for select outboard motors, designed to keep fuel free of contaminants before it reaches the engine. Clean fuel delivery protects carburetor jets and fuel injectors from debris and moisture that can cause rough running, stalling, or long-term wear, making a fresh filter a routine maintenance item for outboard owners.

This filter is a direct cross-reference for OEM part number 5035974, so it installs in the same location and functions the same as the original equipment filter it replaces. It is built to fit 25HP outboards from the 2006-07 model years, as well as 90, 115, and 140 4-stroke outboard models from the 2005-06 model years. Because fitment is specific to these HP ratings, years, and models, confirm your engine matches before ordering to be sure you get the correct filter.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-79781
• Product Type: Fuel Filter
• Replaces (OEM): 5035974
• Weight: 0.06 pounds
• UPC: 808282286019
• Fitment - HP: 25HP (2006-07)
• Fitment - Models: 90, 115, 140 4 stroke (2005-06)

Fitment

• 25HP outboards (2006-07)
• 90, 115, 140 4-stroke outboards (2005-06)

Replaces (OEM)

• 5035974

Frequently Asked Questions

What does Sierra fuel filter 18-79781 fit? 18-79781 fits 25HP outboards from the 2006-07 model years, and 90, 115, and 140 4-stroke outboard models from the 2005-06 model years.

Is 18-79781 a direct replacement for OEM part 5035974? Yes, Sierra part 18-79781 replaces OEM part number 5035974 and installs as a direct equivalent on applicable outboards.

How much does this fuel filter weigh? The Sierra 18-79781 fuel filter weighs 0.06 pounds.

Will 18-79781 work on any outboard motor? No, this filter is fitment-specific: it is designed for 25HP outboards (2006-07) and 90/115/140 4-stroke outboards (2005-06), so it will not fit every outboard model.

What brand is part number 18-79781? Part number 18-79781 is manufactured by Sierra.

How do I know if this filter matches my engine? Check your outboard's horsepower rating and model year against the listed fitment for 18-79781: 25HP (2006-07) or 90/115/140 4-stroke (2005-06).

What is the UPC for the Sierra 18-79781 fuel filter? The UPC for the Sierra Fuel Filter 18-79781 is 808282286019.

Why is fuel filtration important on these outboards? A fuel filter like the Sierra 18-79781 removes debris and contaminants from fuel before it reaches the engine, helping protect carburetor or injector components on 25HP and 90/115/140 4-stroke outboards.

Does this filter come with any other included parts? The dossier for the Sierra 18-79781 fuel filter does not specify additional included components beyond the filter itself.

Is 18-79781 the correct part number to order? 18-79781 is the Sierra part number to reference; it cross-references directly to OEM number 5035974 for the applicable 25HP (2006-07) and 90/115/140 4-stroke (2005-06) outboards.