SPI Knock Sensor for Ski-Doo fits many 2006-2009 Replaces OEM# 420664035

Knock Sensor for Ski-Doo

This SPI knock sensor replaces OEM part number 420664035 for Ski-Doo snowmobiles from 2006 to 2009.

Overview

This knock sensor is designed as a direct replacement for the factory knock sensor on Ski-Doo snowmobiles. It accurately detects engine knock to protect the engine from damage. Compatible with many 2006-2009 Ski-Doo models, this sensor ensures reliable performance.

Built For Performance

• Direct replacement for OEM part 420664035
• Precision-calibrated sensing element
• Robust housing resists vibration and moisture
• Plug-and-play installation
• Meets original equipment specifications

On-The-Job Use

• Monitors engine knock in Ski-Doo snowmobile engines
• Helps prevent detonation and engine damage
• Essential for maintaining optimal engine timing
• Used in both trail and performance riding conditions

Specs At A Glance

Good To Know

Q: Does this sensor include the mounting hardware? A: The sensor comes with the necessary mounting bolt; ensure the old hardware is reusable or order separately.

Q: Will this work on a 2005 Ski-Doo? A: This sensor is confirmed for 2006-2009 models; earlier models may use a different sensor.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.