Walker 242-1071 Fits select: 2003-2004 CADILLAC CTS, 2002-2003 SATURN VUE

Walker Products 242-1071 Ignition Knock (Detonation) Sensor. Walker Products 242-1071 Ignition Knock (Detonation) Sensor. Walker Products Ignition Knock (Detonation) Sensors are OE Replacement components that monitor engine vibrations to detect knocking or detonation events. These sensors are a critical part of the engine control system, allowing the ECU to adjust ignition timing in real time to prevent spark knock—a condition that can cause internal engine damage, reduced fuel economy, and drivability issues. Walker Knock Sensors are engineered to match OE specifications for frequency range, sensitivity, and electrical output. Each unit is tuned to detect the specific resonant frequency of knock in a given engine platform, enabling precise spark retard when knock is detected. Built from high-quality, heat- and oil-resistant materials, these sensors are designed to endure the harsh conditions of the engine block and cylinder head. With exact OE fitment, Walker Knock Sensors install directly into the original threaded locations and connect using factory-style electrical terminals. Whether addressing a fault code (e.g., P0325, P0330), correcting timing issues, or replacing a failed sensor, Walker Knock Sensors restore proper knock detection, improve engine safety, and support optimal ignition performance across a wide range of gasoline applications.

Walker 242-1071

Fits Select:
2003-2004 CADILLAC CTS 6 Cyl 3.2 L
2002-2003 SATURN VUE 6 Cyl 3 L
2001-2003,2005 SATURN L300 6 Cyl 3 L
2000 SATURN LS2 6 Cyl 3 L
2004 SATURN LW300 LEVEL 2 6 Cyl 3 L
2001-2003 SATURN LW300 6 Cyl 3 L
2000 SATURN LW2 6 Cyl 3 L
1997-2001 CADILLAC CATERA 6 Cyl 3 L
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Manufacturer part number	242-1071
Vehicle model	2421071
Compatibility	Cadillac Catera 2001-1997, CTS 2004-2003, Saturn L300 2005-2001, LS2 2000, LW2 2000, LW300 2003-2001, Vue 2003-2002
Vehicle fitment type	Specific
Brand	Walker
Pieces	1
Model	2421071
Vehicle type	Car, Truck, Sport Utility Vehicle, CUV
Has nrtl listing certification	N
Assembled product weight	0.12 lb