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SKU:
ZZ3F09051
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Neutral Switch Shift 8M0052939 Fit Mercury CMD QSD 2.0 ES 130 150 170 814281A7
$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 CMD QSD 2.0 ES
This neutral switch shift 8M0052939 is a direct replacement for Mercury CMD QSD 2.0 ES stern drive and inboard systems, ensuring reliable shift engagement and neutral safety. The neutral switch shift 8M0052939 monitors gear position to prevent starting in gear, protecting the drive train. It is designed as an aftermarket component for Mercury and Mercury MerCruiser, matching OEM cross-reference 8M0052939 and 814281A7.
Overview
This neutral switch shift 8M0052939 is a marine-grade electrical switch that detects when the shift mechanism is in neutral or in gear. It sends a signal to the engine control system to enable safe starting and throttle operation. This neutral switch shift is built for Mercury CMD QSD 2.0 ES models from 130 through 170 horsepower, offering a dependable replacement for a worn or failed original switch.
Built For Performance
- Direct replacement for Mercury CMD QSD 2.0 ES shift assemblies
- Matches OEM part number 8M0052939 and cross-reference 814281A7
- Corrosion-resistant marine-grade housing for saltwater and freshwater use
- Precise electrical contact for consistent neutral safety and shift detection
- Sealed connector to resist moisture and vibration damage
- Simple bolt-on installation with existing hardware
Fits These Machines
- for Mercury CMD QSD 2.0 ES 130
- for Mercury CMD QSD 2.0 ES 150
- for Mercury CMD QSD 2.0 ES 170
On-The-Job Use
- Replacing a faulty neutral switch that allows starting in gear
- Servicing a Mercury CMD QSD 2.0 ES stern drive during regular maintenance
- Restoring shift interlock functionality on a marine diesel engine platform
- Performing a repair when the engine fails to start or cranks unexpectedly
Specs At A Glance
| Part Number(s) | 8M0052939, 814281A7 |
| Type | Neutral switch shift |
| Compatibility | Mercury CMD QSD 2.0 ES 130, 150, 170 |
Good To Know
Q: How do I know if my neutral switch shift 8M0052939 is failing? A: You may notice the engine will not start in neutral or starts in gear, which is a safety hazard. Test the switch continuity with a multimeter and compare against the manufacturer's specifications.
Q: Is this switch compatible with older Mercury MerCruiser models? A: This part is specifically designed for Mercury CMD QSD 2.0 ES engines, but cross-reference 814281A7 may apply to some similar Mercury applications. Verify your serial number and existing switch part before ordering.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.