SPI Knock Sensor for Yamaha many 2004-2021 Snow Replaces OEM# 8FE-85780-00-00
SPI Knock Sensor for Yamaha many 2004-2021 Snow Replaces OEM# 8FE-85780-00-00
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SPI Knock Sensor for Yamaha
This knock sensor is designed to detect engine detonation in Yamaha snowmobiles, replacing OEM part number 8FE-85780-00-00.
Overview
The SPI knock sensor monitors combustion chamber vibrations to prevent engine damage in Yamaha snowmobiles from 2004 to 2021. It directly replaces OEM part 8FE-85780-00-00, ensuring accurate knock detection and proper ignition timing. Ideal for maintaining peak performance in two-stroke and four-stroke snowmobile engines.
Built For Performance
- Direct OEM replacement for part 8FE-85780-00-00
- High sensitivity piezoelectric element detects early detonation
- Rugged housing resists vibration, moisture, and temperature extremes
- Precision threaded mounting for secure installation
- Tested for reliable operation in cold start conditions
On-The-Job Use
- Installed on Yamaha snowmobiles from 2004 through 2021
- Used in both recreational and trail riding conditions
- Helps protect engines during aggressive throttle application
- Essential for tuned or high-compression motors
Specs At A Glance
| Part Number(s) | 8FE-85780-00-00 |
| OEM Reference | 8FE-85780-00-00 |
Good To Know
Q: Will this knock sensor work on all Yamaha snowmobiles? A: It is designed for models from 2004 to 2021, but always verify compatibility with your specific serial number.
Q: How do I install the knock sensor? A: Installation typically involves threading the sensor into the engine block and connecting the wire harness; consult your service manual for torque specs.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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