$56.00
The Johnson/Evinrude Head Cover Bolt Set includes 13 cylinder head cover screws, the factory quantity used on many OMC 2-cylinder outboards and applicable SST-45 / Formula Light powerheads.
These screws secure the cylinder head cover over the cover to head gasket, helping maintain even clamping around the cooling passages and thermostat area.
Ideal for head cover service, thermostat work, cooling system repairs, powerhead rebuilding, or replacing corroded, rounded, damaged, or mismatched original hardware.
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The Johnson/Evinrude Head Cover Screw 323359, includes a complete set of 14 screws to secure the cylinder head cover to the cylinder head on select OMC outboards.
The same hardware is also relevant to SST-45 / Formula Light applications using this style of cylinder head and cover assembly.
The cylinder head cover closes off the cooling water and thermostat area on the outside of the cylinder head.
The 323359 screws clamp the cover evenly against the cover to head gasket, helping maintain:
Because there are multiple fasteners around the cover, consistent bolt condition and even tightening are important.
Part number 323359 / 0323359 appears as the “Screw, Head Cover” on many standard Johnson/Evinrude 2-cylinder outboards.
Common applications include select engines in the:
range, depending on model and year.
Many factory parts diagrams specify 14 bolts per cylinder head cover assembly.
Because OMC used different head designs across production years, always verify the original part number and quantity for your specific engine.
The SST-45 / Formula Light powerhead uses the same basic cylinder-head-cover style found on related production OMC engines.
For racers, these screws are part of the cooling-system sealing assembly around the cylinder head.
This 14-piece set provides a convenient way to replace the complete group rather than mixing old and new hardware during a powerhead rebuild or cooling-system service.
At Liquid Revolutions, we prefer to inspect all of the head cover fasteners together whenever the cover is removed, especially on engines that have been apart multiple times over the years.
Head-cover screws often see years of:
It is common to find some screws in much worse condition than others.
Replacing the full set helps eliminate:
A complete matching set also makes the finished repair cleaner and easier to service later.
Replacement should be considered when:
Saltwater engines deserve especially close inspection because corrosion can affect both the screw and the threaded holes in the cylinder head.
The 323359 screws are commonly used with components such as:
Whenever the cover is removed, it is a good opportunity to inspect the thermostat and pressure-relief components as well.
Before installing the head cover:
The cylinder head cover has a relatively large sealing surface with multiple cooling passages behind it.
Uneven tightening can contribute to:
Using a complete set of serviceable screws and tightening them evenly helps the gasket do its job properly.
At Liquid Revolutions, we treat the head cover and its hardware as part of the cooling system, not just as cosmetic engine hardware.
On an SST-45 engine, keeping the cover properly sealed is especially important because the engine operates at sustained high RPM and depends on consistent cooling-water flow.
Replacing all 14 head-cover screws at once can make sense during a rebuild, especially when the original hardware has years of corrosion, repeated service, or mixed replacement screws.
For stock Johnson/Evinrude owners, the same set is useful during thermostat service, cylinder-head-cover replacement, or general cooling-system restoration.
| Weight | .75 lbs |
|---|---|
| Dimensions | 2 × 2 × 4 in |
