SIERRA MerCruiser Brass Drain Tap, 1/4 Inch NPT – 18-4218

Description

SIERRA MerCruiser Brass Drain Tap, 1/4 Inch NPT – 18-4218

Sierra 18-4218 is a brass drain tap / drain cock for MerCruiser engine-block and exhaust-manifold drain locations using a 1/4-inch NPT drain tap, including common MCM/MIE applications.

• Brass 1/4-inch NPT drain cock for convenient draining of engine blocks and exhaust components.
• Cross-references MerCruiser 22-16951A1 / 22-16951Q1, 22-64426 and 22-87238.
• Use compatible thread sealant sparingly and verify the water passage is clear of rust or scale after opening the drain.
• Designed as a direct marine-service replacement where the listed Sierra/OEM reference is specified.
• Compare the original part number, dimensions and assembly configuration before installation.

Fitment for marine engine and drive service parts can vary by model, serial number, drive/gearcase, cooling configuration and prior OEM supersessions. Compare the original OEM number and physical configuration before installation, and follow the applicable manufacturer service procedure and torque specifications.

Specifications

• Manufacturer: Sierra
• Part Number: 18-4218
• Part Type: Brass drain tap / drain cock
• Application: MerCruiser engine-block and exhaust-manifold drain locations using a 1/4-inch NPT drain tap, including common MCM/MIE applications.
• Thread: 1/4 in NPT
• Material: Brass

Interchange / OEM References

• MerCruiser: 22-16951A1, 22-16951Q1, 22-64426, 22-87238