SIERRA Johnson / Evinrude 20-35 HP Water Cover Gasket – 18-3899

Description

SIERRA Johnson / Evinrude 20-35 HP Water Cover Gasket – 18-3899

Sierra 18-3899 is a Cylinder head water-cover gasket engineered for the specified marine application. Johnson/Evinrude 20, 25, 25C, 30 and 35 HP outboards using OMC/BRP water-cover gasket 327674.

• Water-cover/cylinder-head-cover gasket for specified Johnson/Evinrude 20-35 HP outboards.
• Replaces OMC/BRP 327674 and cross-references GLM 33700.
• Seals the cooling-water cover on the cylinder-head assembly to prevent external leakage and maintain water routing.
• Useful during cooling-passage inspection, scale removal or cover replacement.
• Inspect the cover and head sealing surfaces for corrosion and warpage before fitting the new gasket.

Fitment for marine engine and drive service parts can vary by model, serial number, gearcase, cooling configuration and prior component supersessions. Compare the original OEM number and physical configuration before installation, and renew related seals, locking hardware or adjacent wear items when their condition requires it.

Specifications

• Manufacturer: Sierra
• Part Number: 18-3899
• Part Type: Cylinder head water-cover gasket
• Application: Johnson/Evinrude 20, 25, 25C, 30 and 35 HP outboards using OMC/BRP water-cover gasket 327674.
• Engine Range: 20 / 25 / 25C / 30 / 35 HP
• OEM Reference: 327674

Interchange / OEM References

• GLM: 33700
• Johnson/Evinrude Outboard: 327674