HomeEmission Control > SensorsStandard Ignition KS503 Ignition Knock (Detonation) Sensor
Part #: KS503

Standard Ignition KS503 Ignition Knock (Detonation) Sensor

⚙️ 78 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Dodge, Fiat, Jeep, and Ram, 1500, 1500 Classic, 2500, 3500, 500X, Challenger, Charger, Cherokee, Durango, Grand Cherokee, Grand Cherokee L, Hornet, Renegade, Wagoneer, and Wrangler
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Reliable Ignition Knock Sensor for Dodge, Jeep, Ram, and Fiat Vehicles

The Standard Ignition KS503 Ignition Knock (Detonation) Sensor is designed to detect engine knocking and help optimize performance in select Dodge, Jeep, Ram, and Fiat models. This sensor provides accurate knock detection to support efficient engine timing adjustments.

  • Direct bolt-on mounting for secure installation
  • Male blade terminals with 2 terminal quantity for reliable electrical connection
  • Single oval and rectangular plug-in connector for easy integration
  • Durable plastic construction for long-lasting use
  • Compatible with multiple models including Dodge Charger, Jeep Grand Cherokee, Ram 1500, and Fiat 500X

Product Details and Specifications

The KS503 ignition knock sensor from Standard Ignition features a direct mounting type that bolts onto the engine block, ensuring precise placement for accurate knock detection. It includes a single male connector with an oval and rectangular shape, designed for a plug-in connection. The sensor terminals are male blade type, with two terminals to maintain a stable electrical interface. Constructed from durable plastic materials, this sensor withstands typical engine bay conditions. The thread size is specified as zero, indicating a custom fitment for the intended vehicles.

Compatible Vehicles and Applications

This ignition knock sensor is compatible with a range of Dodge, Jeep, Ram, and Fiat vehicles, including but not limited to:

  • Dodge Charger and Challenger
  • Jeep Grand Cherokee, Grand Cherokee L, Cherokee, Durango, Renegade, Wrangler, Wagoneer, Hornet
  • Ram 1500, 1500 Classic, 2500, 3500
  • Fiat 500X

It is designed to detect engine detonation and send signals to the engine control unit (ECU) to adjust ignition timing accordingly.

Common Issues Addressed by the KS503 Knock Sensor

  • Engine knocking or pinging under 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
  • Potential engine damage from undetected knock events

Installation Notes and Tips

The KS503 sensor mounts directly to the engine block using a bolt-on attachment method. Ensure the mounting surface is clean and free of debris before installation. The sensor features a single male plug-in connector with blade terminals; verify connector compatibility and secure connection to avoid signal loss. No mounting hardware is included, so use the original bolt or appropriate replacement hardware. Proper torque specifications should be followed to avoid sensor damage.

Quality Assurance and Warranty

Standard Ignition manufactures the KS503 sensor to meet OEM specifications for fit and function. While specific warranty details are not provided, Standard Ignition products typically undergo rigorous quality control to ensure reliable performance in emission control systems. This sensor supports maintaining engine efficiency and emission compliance in compatible Dodge, Jeep, Ram, and Fiat vehicles.

BrandStandard Ignition
Part NumberKS503
Mounting Hardware IncludedNo
Terminal Quantity2
Connector GenderMale
Terminal GenderMale
Attachment MethodBolt on
Connector Quantity1
Connector ShapeOval, rectangle
Connector TypePlug in
MaterialPlastic
Mounting TypeDirect
Terminal TypeBlade
Thread Size0

This part fits 78 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2025DodgeDurango6.2LV8N/A
2025Ram25006.4LV8N/A
2025Ram35006.4LV8N/A
2024DodgeDurangoN/A
2024DodgeHornet2.0LL4N/A
2024JeepGrand Cherokee L5.7LV8N/A
2024Ram15005.7LV8N/A
2024Ram1500 Classic5.7LV8N/A
2024Ram25006.4LV8N/A
2024Ram35006.4LV8N/A
2023DodgeChallenger6.2LV8N/A
2023DodgeCharger6.2LV8N/A
2023DodgeDurango6.2LV8N/A
2023DodgeHornet2.0LL4N/A
2023Fiat500XN/A
2023JeepGrand Cherokee5.7LV8N/A
2023JeepGrand Cherokee L5.7LV8N/A
2023JeepRenegade1.3LL4N/A
2023JeepWagoneer5.7LV8N/A
2023Ram15005.7LV8N/A
2023Ram1500 Classic5.7LV8N/A
2023Ram25006.4LV8N/A
2023Ram35006.4LV8N/A
2022DodgeChallenger6.2LV8N/A
2022DodgeCharger6.2LV8N/A
2022Fiat500XN/A
2022JeepCherokee2.0LL4N/A
2022JeepGrand Cherokee2.0LL4N/A
2022JeepGrand Cherokee L5.7LV8N/A
2022JeepRenegade1.3LL4N/A
2022JeepWagoneer5.7LV8N/A
2022JeepWrangler2.0LL4N/A
2022Ram15005.7LV8N/A
2022Ram1500 Classic5.7LV8N/A
2022Ram25006.4LV8N/A
2022Ram35006.4LV8N/A
2021DodgeChallenger6.2LV8N/A
2021DodgeCharger6.2LV8N/A
2021DodgeDurango6.2LV8N/A
2021Fiat500XN/A
2021JeepCherokee2.0LL4N/A
2021JeepGrand Cherokee6.2LV8N/A
2021JeepGrand Cherokee L5.7LV8N/A
2021JeepRenegade1.3LL4N/A
2021JeepWrangler2.0LL4N/A
2021Ram15005.7LV8N/A
2021Ram1500 Classic5.7LV8N/A
2021Ram25006.4LV8N/A
2021Ram35006.4LV8N/A
2020DodgeChallenger6.2LV8N/A
2020DodgeCharger6.2LV8N/A
2020Fiat500XN/A
2020JeepCherokee2.0LL4N/A
2020JeepGrand Cherokee6.2LV8N/A
2020JeepRenegade1.3LL4N/A
2020JeepWrangler2.0LL4N/A
2020Ram15005.7LV8N/A
2020Ram1500 Classic5.7LV8N/A
2020Ram25006.4LV8N/A
2020Ram35006.4LV8N/A
2019DodgeChallenger6.2LV8N/A
2019DodgeCharger6.2LV8N/A
2019Fiat500XN/A
2019JeepCherokee2.0LL4N/A
2019JeepGrand Cherokee6.2LV8N/A
2019JeepRenegade1.3LL4N/A
2019JeepWrangler2.0LL4N/A
2019Ram15005.7LV8N/A
2019Ram1500 Classic5.7LV8N/A
2019Ram25006.4LV8N/A
2019Ram35006.4LV8N/A
2018DodgeChallenger6.2LV8N/A
2018DodgeCharger6.2LV8N/A
2018JeepGrand Cherokee6.2LV8N/A
2018JeepWrangler2.0LL4N/A
2018Ram15005.7LV8N/A
2018Ram25005.7LV8N/A
2018Ram35005.7LV8N/A

* 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:

68223050AADKS368EKS158KDSA10117

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