BRAND NEW *OEM Quality* knock sensor to suit Holden Commodore VS/VT and HSV Clubsport, Maloo, Manta and Senator with the 5.0L V8 LB9 304 cu.in engine.

The 5.0L LB9 V8 uses two knock sensors and when one fails the ECU stores a P0325-series code and retards ignition timing - the engine loses power and becomes noticeably flat under load. Without a functioning sensor the ECU can also no longer protect the engine from actual detonation when it occurs. This BRAND NEW direct-fit unit restores knock detection. Note: 2 sensors required per vehicle - this listing is for 1. Most orders dispatched same day and delivered express Australia-wide.

TO SUIT

This sensor suits all Holden 5.0L V8 LB9 304 cu.in engines across the Commodore VS Series 1-3 and VT Series 1, Berlina VS, Calais VS/VT, Caprice VS, Statesman VS and HSV Clubsport/Maloo/Manta/Senator VS and VT. Covers vehicles produced from April 1995 to November 2000. See full vehicle list above.

FITMENT CHECK

For the 3.8L V6 Ecotec see the CKS101-1 listing. For the HSV 5.7L 350 Stroker see CKS101-4. For the 5.7L LS1 V8 Calais VT see CKS101-4. Every LB9 V8 requires 2 knock sensors - order quantity 2 if replacing both.

OEM PART NUMBERS

10456287
8104562870

OTHER PART NUMBERS

FUELMISER: K1507
WALKER PRODUCTS: 213-325
NGK: KNS-002

PACKAGE INCLUDES

1 x BRAND NEW knock sensor (1-pin connector, without cable). 2 required per vehicle.

ABOUT THIS SENSOR

The knock sensor on the LB9 304 V8 is a piezoelectric device threaded into the engine block that monitors vibration frequency to detect detonation. It signals the ECU to retard ignition timing on the affected cylinder bank to protect the engine. The 5.0L V8 uses two sensors - one per bank - and independent monitoring is important for an engine that responds strongly to correct timing.

When the sensor fails the ECU cannot distinguish between normal engine vibration and detonation, so it defaults to a conservative retarded timing map that costs both power and fuel economy. Fault codes P0325 to P0332 will be stored and the engine management light will illuminate.

COMMON SYMPTOMS OF FAILURE

Check engine light with codes P0325 P0326 P0330 P0332
Reduced power and sluggish throttle response
Increased fuel consumption
Flat spot or hesitation under hard acceleration
Audible knock or pinging at high load or on overtaking
Fault code returning immediately after clearing

What does a knock sensor do?

The knock sensor detects high-frequency engine vibrations caused by pre-ignition, commonly called engine knock, ping, or detonation. Pre-ignition occurs when the air-fuel mixture ignites before the spark plug fires. The sensor sends this signal to the ECU, which responds by retarding ignition timing until the knocking stops. This protects the engine from the internal damage that sustained detonation causes.

What are the symptoms of a failing knock sensor?

Because the ECU retards ignition timing as a safety measure when the knock sensor signal is lost or incorrect, symptoms are often performance-related rather than dramatic. Common signs include reduced power and sluggish acceleration particularly under load, increased fuel consumption, engine hesitation from low RPM, audible pinging under hard acceleration, and a Check Engine light with codes P0325 to P0334.

Can I drive with a faulty knock sensor?

Short distances are possible but not recommended. The ECU retards timing across the board without knock sensor feedback, leaving the engine running significantly below its designed performance level. On vehicles that use lower octane fuel or in hot conditions, the engine is also vulnerable to undetected detonation which can cause serious internal damage including piston and ring damage. Replace the sensor promptly.

Where is the knock sensor located?

The knock sensor is typically bolted directly to the engine block, often on the side or beneath the intake manifold. On V6 and V8 engines there may be two sensors, one per cylinder bank. The location varies significantly between makes and models - some are easily accessible while others require partial intake manifold removal. Check a workshop manual for your specific engine before attempting replacement.

How do I test a knock sensor?

Use an OBD2 scanner to check for codes P0325 to P0334 and review live data for ignition timing retard values higher than normal. You can also test the sensor resistance with a multimeter - most knock sensors read between 100,000 and 200,000 ohms. A sensor reading open circuit or zero ohms has failed. Some scan tools can also activate a knock simulation test to verify the sensor is responding correctly.

Does the knock sensor need to be programmed after replacement?

No programming is required for the sensor itself - it is a passive device that plugs directly in. However it is important to clear stored fault codes with an OBD2 scanner after replacement so the ECU can return to normal timing operation. On some vehicles the ECU will take several drive cycles of varied load and speed to fully relearn optimal timing after the sensor has been replaced.

Identification
SKU	CKS101-3
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CKS101
Reference OEM Number	10456287
Other OEM Numbers	10456287, 8104562870
Trade Part Numbers	FUELMISER: K1507, WALKER: 213-325, NGK: KNS-002
Product Specifics
Sensor Type	ENGINE KNOCK SENSOR
Type	Sensor
Features	Direct Fit
Manufacturer Warranty	1 Year
Make	HOLDEN
Number Of Sensors	1
Other Details
Note	Every LB9 V8 requires 2 knock sensors. This listing is for 1 sensor only - order quantity 2 if replacing both.
Unit Of Measure	ea