Sierra Oil Filter 18-8700, Replaces Yamaha 5GH-13440-20-00, Fits F15C/F20/F25/F40A/T50/F50 Outboards

The Sierra 18-8700 is a marine oil filter engineered for a range of Yamaha four-stroke outboard motors, designed to keep engine oil free of contaminants that cause premature wear. It is a direct cross-reference to the Yamaha 5GH-13440-20-00 filter, so it installs using the same fitment as the factory part on covered models. This filter is intended for use during routine oil changes on Yamaha F15C, F20, F25, F40A, T50, and F50 outboards, where the manufacturer specifies 10W-30 FC-W oil.

Because oil capacity differs by outboard model, the correct fill amount ranges from 1.7 to 2.1 quarts depending on which engine the filter is installed on -- see the fitment table below for the exact capacity per model. Keeping the correct filter in rotation for scheduled maintenance helps protect the internal engine components of these Yamaha outboards and supports consistent oil pressure and lubrication during operation.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-8700
• OEM Cross Reference: 5GH-13440-20-00
• Category: Yamaha Outboard Oil & Filters
• Weight: 0.21 pounds
• Recommended Oil: 10W-30 FC-W
• Oil Capacity, F15C / F20: 1.8 L / 1.9 Qt.
• Oil Capacity, F25: 1.7 L / 1.8 Qt.
• Oil Capacity, F40A / T50 / F50: 2.0 L / 2.1 Qt.

Fitment

• Yamaha F15C, 2007 - 2012
• Yamaha F20, 2007 - 2012
• Yamaha F25, 2009 - Current
• Yamaha F40A, 2001 - Current
• Yamaha T50, 2005 - Current
• Yamaha F50, 2005 - Current

Replaces (OEM)

• 5GH-13440-20-00

Frequently Asked Questions

What does the Sierra 18-8700 oil filter fit? The Sierra 18-8700 fits Yamaha F15C and F20 outboards (2007 - 2012), F25 (2009 - Current), F40A (2001 - Current), and T50 and F50 (2005 - Current).

Is the Sierra 18-8700 the same as the Yamaha 5GH-13440-20-00 filter? Yes, the Sierra 18-8700 is a direct cross-reference to the Yamaha 5GH-13440-20-00 oil filter and fits the same covered outboard models.

How much oil do I need with the 18-8700 filter? Oil capacity depends on the outboard model: 1.8 L / 1.9 Qt. For F15C and F20, 1.7 L / 1.8 Qt. For F25, and 2.0 L / 2.1 Qt. For F40A, T50, and F50.

What type of oil should I use with this filter? Yamaha specifies 10W-30 FC-W oil for use with the Sierra 18-8700 filter across its covered outboard models.

How much does the Sierra 18-8700 oil filter weigh? The Sierra 18-8700 oil filter weighs 0.21 pounds.

Will the 18-8700 fit an older Yamaha F25 or F50? No. Earlier Yamaha F25 and F50 model years used different Sierra filter part numbers; the 18-8700 covers the F25 from 2009 - Current and the F50 from 2005 - Current.

Does the Sierra 18-8700 fit the Yamaha T50? Yes, the 18-8700 fits the Yamaha T50 from 2005 - Current, using the same 5GH-13440-20-00 cross-reference as the other covered models.

Is the Sierra 18-8700 filter genuine Yamaha or aftermarket? The 18-8700 is a Sierra-brand replacement filter cross-referenced to the Yamaha 5GH-13440-20-00 part number, not an OEM Yamaha-branded filter.

When should the 18-8700 oil filter be replaced? The Sierra 18-8700 should be replaced at each scheduled oil change on covered Yamaha F15C, F20, F25, F40A, T50, and F50 outboards.

Does the Sierra 18-8700 fit the Yamaha F40A? Yes, the F40A is covered from 2001 - Current, requiring 2.0 L / 2.1 Qt. Of 10W-30 FC-W oil with the 18-8700 filter.