EVINRUDE Part #0394408 – Diaphragm, Thermostat Cover. Factory-direct OEM replacement from U.S. Boatworks, your marine parts expert for 40+ years.

FITS: Evinrude & Johnson 120-300HP (1985-1993) – Fits 377 models

This OEM EVINRUDE Diaphragm, Thermostat Cover is backed by U.S. Boatworks’s commitment to quality and customer service. We welcome DIY boaters and provide expert advice free of charge.

Why OEM Parts Win

• Precise engineering = perfect fit
• No trial-and-error with aftermarket guesswork
• Install once, done right

YOUR PARTS, OUR PRIORITY

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• Call or text: 913-342-0011