Description
SIERRA OMC / Johnson / Evinrude Gear Set with Sliding Clutch – 18-2221
Sierra 18-2221 is a matched gearcase service set for selected Johnson/Evinrude outboards and OMC stern drives. Catalog descriptions identify the set as including forward/gear-set components, reverse gear and sliding clutch so the mating shift surfaces can be renewed together rather than mixing worn and new gear components.
- Matched marine gearcase gear set with related sliding-clutch components.
- Cataloged set includes forward/gear-set component, reverse gear and sliding clutch.
- Used on selected Johnson/Evinrude and OMC gearcases; application varies by model and ratio.
- Mallory cross-reference: 9-73560.
- Gearcase setup requires correct shimming, bearing preload/backlash checks and service-manual procedures.
For marine drive and engine service parts, fitment can vary by model, serial number, gear ratio, casting and prior service history. Compare the original OEM number and physical configuration before installation, and replace related seals, bearings, locking hardware or cable components when their condition requires it.
Specifications
- Manufacturer: Sierra
- Part Number: 18-2221
- Application: Selected Johnson/Evinrude V4/small-gearcase and OMC Cobra applications that cross to Sierra 18-2221 / Mallory 9-73560; verify exact gear ratio and OEM model before installation.
- Part Type: Gear set / gearcase service set
- System: Forward/reverse marine gearcase
- Application: Selected Johnson/Evinrude and OMC
- Installation: Requires gearcase setup and shimming
Interchange / OEM References
- Mallory: 9-73560
- GLM: 22630
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