Walker 242-1179 ignition knock (detonation) sensor for the 1997-1998 BMW Z3 6-cylinder 2.8L, the 1998-2000 Z3 6-cylinder 3.2L and other vehicles monitors engine vibration to detect knock. The ECU uses that signal to adjust ignition timing and help prevent internal engine damage.
A fault code such as P0325 or P0330, spark knock or drivability issues can mean the sensor has failed. Before you replace it, rule out a damaged wire, a loose connector and any real mechanical knock in the engine, because those can look like a bad sensor.
This OE replacement sensor is listed for a wide range of BMW models, including the 1998-1999 BMW 323i 6-cylinder 2.5L and the 1998-1999 BMW 323is 6-cylinder 2.5L. The 1998-1999 BMW 323is 6-cylinder 2.5L takes one sensor, which is what this listing holds.
Fit and size
Build and materials
One knock sensor with its wiring harness. Mounting hardware is not included, so plan on new hardware rather than reusing the old.
Interchange: 158-1144 · 9.3110 · V20-72-3000
5S2148 · 12141703276 · 1703276 · 550209 · 60213 · ID0097 · KS253 · 19596 · SU5392
This part cross-references / interchanges with the following part numbers:
Is the Walker 242-1179 knock sensor right for a 1998-1999 BMW 323i 6-cylinder 2.5L?
Yes, Walker 242-1179 is listed for the 1998-1999 BMW 323i 6-cylinder 2.5L. If your car is a different model or year, look it up in the "Vehicles it fits" section on this page.
Does this knock sensor come with its wiring harness?
Yes, the wiring harness is included. Mounting hardware is not included, so order any bolts or fasteners you need separately.
What connector does the Walker 242-1179 sensor use?
Walker 242-1179 has one oblong male connector with four bullet-type female terminals. It connects with factory-style terminals.
Which fault codes are linked to a bad knock sensor?
Codes such as P0325 and P0330 are ones this sensor is meant to address. Spark knock or drivability issues can also be signs, and a shop can test the circuit.
Is this Walker sensor tuned for a specific engine?
Yes. Each unit is tuned to the specific resonant frequency of knock for a given engine platform, so the ECU can retard spark precisely when knock is detected.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
