Description
SIERRA MerCruiser V6/V8 3/4 Inch NPT Drain Elbow Assembly – 18-4224
Sierra 18-4224 is a drain elbow assembly for MerCruiser MCM/MIE V6 and V8 center-rise exhaust-manifold drain systems using 3/4-inch NPT elbow assembly 22-806926A1 / 22-862210A01.
- Complete drain-elbow assembly for common MerCruiser center-rise V6/V8 exhaust manifolds.
- 3/4-inch NPT manifold connection supports serviceable draining and winterization.
- Cross-references GLM 13990 and Mallory 9-41200 in addition to the listed MerCruiser numbers.
- 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: 18-4224
- Part Type: Drain elbow assembly
- Application: MCM/MIE V6/V8 center-rise exhaust manifolds
- Thread: 3/4 in NPT
Interchange / OEM References
- MerCruiser: 22-806926A1, 22-862210A01
- GLM: 13990
- Mallory: 9-41200


Reviews
There are no reviews yet.