HomeEmission Control > SensorsStandard Ignition KS178 Ignition Knock (Detonation) Sensor
Part #: KS178

Standard Ignition KS178 Ignition Knock (Detonation) Sensor

⚙️ 13 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: BMW, 740iL, 530i, 540i, 740i, and 840Ci
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Overview of Standard Ignition KS178 Knock Sensor

The Standard Ignition KS178 Ignition Knock (Detonation) Sensor is designed for precise detection of engine knock in select BMW models. This sensor helps maintain optimal engine performance by monitoring detonation and sending accurate signals to the engine control unit.

  • Compatible with BMW 530i, 540i, 740i, 740iL, and 840Ci models
  • Part number KS178 for exact replacement
  • Bolt-on attachment method for secure mounting
  • Rectangular, female plug-in connector with one connector and two blade terminals
  • Terminal gender: male; terminal type: blade
  • Mounting type: bolt mount; mounting hardware not included

Detailed Product Features and Specifications

The KS178 knock sensor from Standard Ignition features a bolt-on design that ensures a firm and reliable attachment to the engine block. It includes a single rectangular female connector designed for plug-in connection, which simplifies installation and ensures a secure electrical interface. The sensor has two blade-type terminals with male terminal gender, providing compatibility with the vehicle’s wiring harness. This sensor is engineered to detect engine detonation accurately, allowing the engine control unit to adjust ignition timing and prevent engine damage.

Compatible BMW Models and Applications

This ignition knock sensor is specifically compatible with BMW 530i, 540i, 740i, 740iL, and 840Ci models. It is an essential component for maintaining engine efficiency and emission control in these vehicles. Using the Standard Ignition KS178 ensures proper sensor fitment and reliable performance in these BMW models.

Common Issues Addressed by the KS178 Knock Sensor

  • Engine knocking or pinging during acceleration
  • Reduced fuel efficiency due to improper ignition timing
  • Check engine light triggered by knock sensor fault codes
  • Engine performance issues related to detonation detection failure
  • Potential engine damage from undetected knock events

Installation Notes and Tips

Installation of the KS178 sensor requires removal of the old knock sensor and securing the new sensor using a bolt-on method. Note that mounting hardware is not included, so ensure you have the appropriate bolt for installation. The rectangular female connector should be plugged in firmly to the male blade terminals on the vehicle harness. Proper torque specifications should be followed to avoid sensor damage or improper mounting.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The KS178 knock sensor undergoes rigorous testing to verify its accuracy and longevity. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship.

BrandStandard Ignition
Part NumberKS178
Attachment MethodBolt On
Connector GenderFemale
Connector ShapeRectangular
Connector TypePlug In
Mounting TypeBolt Mount
Terminal GenderMale
Terminal TypeBlade

This part fits 13 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1996BMW740iL4.4LV8N/A
1995BMW530iN/A
1995BMW540iN/A
1995BMW740i4.0LV8N/A
1995BMW740iL4.0LV8N/A
1995BMW840CiN/A
1994BMW530iN/A
1994BMW540iN/A
1994BMW740i4.0LV8N/A
1994BMW740iL4.0LV8N/A
1994BMW840CiN/A
1993BMW740i4.0LV8N/A2 Terminal Fitment
1993BMW740iL4.0LV8N/A2 Terminal Fitment

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

026123109612141702163158-123717-0809213-22795S581371-681572800DKS628KDSA164S8778SBA4135

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.