Walker 242-1133 Ignition Knock (Detonation) Sensor

Ignition Knock Sensor for Audi and Volkswagen

Walker Products 242-1133 is an ignition knock (detonation) sensor built for specific Audi TT, Audi TT Quattro, and Volkswagen Jetta applications. It is a direct-fit engine management sensor for vehicles that require a black sensor body with a 165 mm harness length.

Key Features

• Ignition knock (detonation) sensor for engine timing feedback
• Black sensor housing with 165 mm harness length
• Application-specific fitment for select Audi and Volkswagen models
• Walker Products 242-1133 for OE-style replacement service
• Backed by Walker Products engineering, product management, and technical support

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946 and manufactures parts to meet or exceed OEM standards and specifications. The Walker Products line includes engine management components such as cam and crankshaft sensors, throttle position sensors, oxygen sensors, fuel injectors, spark plug wires, and gaskets. As an ISO 9001/IATF16949 certified company, Walker focuses on controlled production and accurate vehicle application data. Part number 242-1133 is intended for select 2000-2002 Audi TT and TT Quattro models, plus 2000-2001 Volkswagen Jetta applications listed below.

This part cross-references Standard Ignition KS239 for the same application.

What It Helps Address

• Knock sensor fault codes
• Engine pinging or detonation-related drivability issues
• Incorrect ignition timing input to the engine control system
• Check engine light concerns tied to knock sensor circuit faults
• Rough performance caused by inaccurate detonation feedback

Installation Notes

Verify chassis/VIN breakpoints before ordering, since fitment varies by production range. Fits 2000 Audi TT, N/A; Fits 2000 Audi TT Quattro, N/A; Fits 2001 Audi TT, N/A; Fits 2001-2002 Audi TT Quattro, N/A; Fits 2000 Volkswagen Jetta, N/A; Fits 2001 Volkswagen Jetta, N/A. Confirm the black sensor color and 165 mm harness length against the original part before installation.

Quality Assurance

Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company supports production with in-house engineering, product management, and technical documentation, and operates as an ISO 9001/IATF16949 certified manufacturer.