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SKU:
ZZ3F09047
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8M0052939 Neutral Switch Shift Fit Mercury Mercruiser 225HP 250HP 275HP 300HP
$101.19
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$101.19
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$101.19
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
Neutral Switch Shift for Mercury Mercruiser
This is a replacement neutral switch shift assembly, designed to work with Mercury Mercruiser engines including models rated at 225HP, 250HP, 275HP, and 300HP, and it functions to ensure the engine only starts in neutral. This neutral switch shift component references OEM cross-reference number 8M0052939, providing a direct replacement for a worn or failed part. It is built for use in marine applications where reliable shift interlock is essential for safe operation.
Overview
This neutral switch shift is a critical safety component that prevents the outdrive from engaging when starting the engine. Designed specifically for select Mercury Mercruiser high-horsepower models, this neutral switch shift ensures correct starter lockout functionality. This replacement part matches the original 8M0052939 neutral switch shift specifications, making it a dependable service item.
Built For Performance
- Direct replacement for OEM part number 8M0052939
- Constructed to withstand harsh marine environments with corrosion-resistant materials
- Precision-engineered electrical contacts for reliable neutral safety circuit operation
- Simple plug-and-play installation using standard tools
- Rigorous testing for consistent performance across temperature fluctuations
Fits These Machines
- for Mercury Mercruiser 225HP models
- for Mercury Mercruiser 250HP models
- for Mercury Mercruiser 275HP models
- for Mercury Mercruiser 300HP models
On-The-Job Use
- Replacing a faulty neutral safety switch during routine engine maintenance
- Restoring starter interlock function after electrical troubleshooting
- Serving as a spare part for marine mechanics or boat owners
Specs At A Glance
| Part Number(s) | 8M0052939 |
| Type | Neutral Switch Shift |
| Compatible Power Range | 225HP - 300HP |
Good To Know
Q: How does this neutral switch shift work? A: This switch interrupts the starter circuit unless the shift lever is in neutral, preventing accidental engagement of the drive when starting. It is a direct replacement for the original part with the same function.
Q: What should I check before installation? A: Verify your engine's serial number and model to confirm this switch matches your specific Mercury Mercruiser setup. Also check the wiring harness connector for any damage before connecting the new switch.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.