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Description
25 418 12-S Throttle Position Sensor Kohler – Genuine OEM Replacement Part
The Kohler 25 418 12-S Throttle Position Sensor (TPS) is a genuine OEM replacement electronic component designed for select Kohler electronically controlled and EFI-equipped small engines. This sensor monitors throttle valve position and sends critical input to the engine control module (ECM) to ensure proper fuel delivery, ignition timing, and smooth throttle response.
Throttle position sensors are essential for maintaining reliable engine performance, especially in modern Kohler engines with electronic fuel injection systems.
Product Details
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Manufacturer Part Number: 25 418 12-S
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Brand: Kohler
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Part Type: Throttle Position Sensor (TPS)
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Application: EFI Fuel Management / Engine Control System
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OEM Status: Genuine Kohler OEM Replacement Part
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Condition: New
Function
The Kohler 25 418 12-S Throttle Position Sensor is designed to:
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Monitor throttle opening position in real time
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Provide accurate throttle input to the ECM
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Support proper fuel-air mixture and ignition timing
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Improve throttle response and engine efficiency
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Replace faulty or damaged TPS units
Compatibility
This OEM throttle position sensor fits select Kohler EFI and electronically controlled engines commonly used in:
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Riding lawn mowers
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Lawn tractors
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Zero-turn mowers
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Commercial outdoor power equipment
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Kohler engines with electronic fuel injection systems
⚠️ Always verify your engine model and specification number before ordering to ensure correct fitment.
Installation / Usage
The throttle position sensor mounts to the throttle body and connects to the engine wiring harness. Replacement is recommended if experiencing:
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Poor throttle response or hesitation
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Rough idle or engine surging
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EFI diagnostic fault codes
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Engine performance instability under load
For best results:
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Follow Kohler service manual installation procedures
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Inspect wiring connectors for corrosion or damage
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Calibrate or reset ECM if required after installation
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Use only genuine Kohler OEM EFI components
Maintenance Tips
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Keep throttle body clean to prevent sensor strain
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Inspect EFI wiring regularly for secure connections
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Replace faulty TPS promptly to prevent drivability issues
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OEM sensors ensure accurate readings and long-term reliability
