Subaru OEM Knock Sensor (02-05 WRX) | 22060AA100

Overview

The Genuine Subaru OEM Knock Sensor (Part #22060AA100) is a factory-replacement sensor designed for 2002–2005 Subaru WRX turbocharged engines. This exact-fit OEM component monitors engine knock and detonation, signaling the ECU to adjust ignition timing and protect your engine from damage. If your WRX is experiencing hesitation, reduced power, or a check engine light related to knock detection, this is the correct factory-spec replacement.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to factory specifications, ensuring precise calibration and reliable knock detection for your EJ20/EJ205 engine.
• Exact-Fit Replacement — Direct plug-and-play fitment; no modifications or adapter harnesses required.
• Engine Protection — Accurately detects knock and detonation events, allowing the ECU to retard timing and prevent internal engine damage.
• OEM Durability — Built to withstand the heat and vibration of a turbocharged Subaru engine bay, matching the longevity of the original part.
• Factory Warranty — Backed by Subaru's genuine parts warranty for peace of mind.
• Correct Calibration — Matched to the sensitivity and frequency range required by the WRX ECU — no re-tuning needed.

What's Included

• 1x Genuine Subaru Knock Sensor — Part #22060AA100

Specifications

Fitment & Compatibility

This knock sensor is a direct OEM replacement for the following Subaru vehicles:

Always verify fitment using your vehicle's VIN before ordering. Cross-reference OEM part number 22060AA100 with your current sensor to confirm compatibility.

Installation

The knock sensor is located on the engine block and is accessible after removing any necessary intake or heat shield components. Installation is straightforward for experienced DIYers — the sensor threads into the block and connects via the factory wiring harness connector. No programming or ECU recalibration is required when installing a genuine OEM replacement. For best results, torque the sensor to factory specification. If you are unfamiliar with sensor replacement on a turbocharged Subaru, professional installation is recommended.