Engine acting up? Don’t let a faulty part keep you off the water. This genuine Mercury Marine DIAPHRAGM restores reliable performance and gets you back to what you love.

Manufactured to strict Mercury Marine quality standards, this component ensures reliable operation across all engine RPM ranges. Part number F438747 is manufactured to exact Mercury Marine factory specifications for precision installation and optimal performance. Constructed from premium marine-grade materials designed to withstand harsh saltwater and freshwater environments.

Smart boat owners know: buying cheap parts twice costs more than buying genuine Mercury once. Part F438747 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 100-105HP CHRYSLER

• Fits CHRYSLER 100-105HP engines
• Compatible HP: 100HP, 105HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

100HP Models

• 100HP OUTBOARD (Chrysler)

105HP Models

• 105HP OUTBOARD (Chrysler)

Looking for your Mercury engine serial number? Our helpful guide shows you exactly where serial numbers are located on different engines.

Verification & Support

Verify part F438747 works with your Mercury using our parts finder tool. Have questions? Reach out using the contact buttons at the bottom of this page — our team is here to help by text, call, or email

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