Sierra 18-7909 4-Cycle Outboard Oil Filter

The Sierra 18-7909 is a premium canister-style oil filter engineered specifically for 4-cycle outboard marine engines. This high-quality replacement filter features a durable white housing with the Sierra Marine logo and is designed to meet or exceed OEM specifications for reliable engine protection.

Key Features:

• Canister-style design for easy installation and replacement
• Built-in anti-drain back valve prevents oil from draining back into the crankcase during engine shutdown, ensuring immediate oil pressure on startup
• 20mm x 1.5mm thread pitch for secure, leak-free mounting
• White powder-coated steel housing resists corrosion in harsh marine environments
• High-efficiency filter media captures contaminants while maintaining optimal oil flow
• Distinctive Sierra Marine branding for easy identification

This filter provides excellent filtration performance to keep your outboard engine running smoothly and extend engine life. The anti-drain back valve is especially important in marine applications to protect against dry starts and premature engine wear.

Replaces: Mercury 35-802886Q01, Quicksilver 802886Q01, and other OEM marine oil filters with 20mm x 1.5 threading.