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Standard Ignition KS503 Ignition Knock (Detonation) Sensor
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.
| Brand | Standard Ignition |
| Part Number | KS503 |
| Mounting Hardware Included | No |
| Terminal Quantity | 2 |
| Connector Gender | Male |
| Terminal Gender | Male |
| Attachment Method | Bolt on |
| Connector Quantity | 1 |
| Connector Shape | Oval, rectangle |
| Connector Type | Plug in |
| Material | Plastic |
| Mounting Type | Direct |
| Terminal Type | Blade |
| Thread Size | 0 |
This part fits 78 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2025 | Dodge | Durango | 6.2L | V8 | N/A | |
| 2025 | Ram | 2500 | 6.4L | V8 | N/A | |
| 2025 | Ram | 3500 | 6.4L | V8 | N/A | |
| 2024 | Dodge | Durango | N/A | |||
| 2024 | Dodge | Hornet | 2.0L | L4 | N/A | |
| 2024 | Jeep | Grand Cherokee L | 5.7L | V8 | N/A | |
| 2024 | Ram | 1500 | 5.7L | V8 | N/A | |
| 2024 | Ram | 1500 Classic | 5.7L | V8 | N/A | |
| 2024 | Ram | 2500 | 6.4L | V8 | N/A | |
| 2024 | Ram | 3500 | 6.4L | V8 | N/A | |
| 2023 | Dodge | Challenger | 6.2L | V8 | N/A | |
| 2023 | Dodge | Charger | 6.2L | V8 | N/A | |
| 2023 | Dodge | Durango | 6.2L | V8 | N/A | |
| 2023 | Dodge | Hornet | 2.0L | L4 | N/A | |
| 2023 | Fiat | 500X | N/A | |||
| 2023 | Jeep | Grand Cherokee | 5.7L | V8 | N/A | |
| 2023 | Jeep | Grand Cherokee L | 5.7L | V8 | N/A | |
| 2023 | Jeep | Renegade | 1.3L | L4 | N/A | |
| 2023 | Jeep | Wagoneer | 5.7L | V8 | N/A | |
| 2023 | Ram | 1500 | 5.7L | V8 | N/A | |
| 2023 | Ram | 1500 Classic | 5.7L | V8 | N/A | |
| 2023 | Ram | 2500 | 6.4L | V8 | N/A | |
| 2023 | Ram | 3500 | 6.4L | V8 | N/A | |
| 2022 | Dodge | Challenger | 6.2L | V8 | N/A | |
| 2022 | Dodge | Charger | 6.2L | V8 | N/A | |
| 2022 | Fiat | 500X | N/A | |||
| 2022 | Jeep | Cherokee | 2.0L | L4 | N/A | |
| 2022 | Jeep | Grand Cherokee | 2.0L | L4 | N/A | |
| 2022 | Jeep | Grand Cherokee L | 5.7L | V8 | N/A | |
| 2022 | Jeep | Renegade | 1.3L | L4 | N/A | |
| 2022 | Jeep | Wagoneer | 5.7L | V8 | N/A | |
| 2022 | Jeep | Wrangler | 2.0L | L4 | N/A | |
| 2022 | Ram | 1500 | 5.7L | V8 | N/A | |
| 2022 | Ram | 1500 Classic | 5.7L | V8 | N/A | |
| 2022 | Ram | 2500 | 6.4L | V8 | N/A | |
| 2022 | Ram | 3500 | 6.4L | V8 | N/A | |
| 2021 | Dodge | Challenger | 6.2L | V8 | N/A | |
| 2021 | Dodge | Charger | 6.2L | V8 | N/A | |
| 2021 | Dodge | Durango | 6.2L | V8 | N/A | |
| 2021 | Fiat | 500X | N/A | |||
| 2021 | Jeep | Cherokee | 2.0L | L4 | N/A | |
| 2021 | Jeep | Grand Cherokee | 6.2L | V8 | N/A | |
| 2021 | Jeep | Grand Cherokee L | 5.7L | V8 | N/A | |
| 2021 | Jeep | Renegade | 1.3L | L4 | N/A | |
| 2021 | Jeep | Wrangler | 2.0L | L4 | N/A | |
| 2021 | Ram | 1500 | 5.7L | V8 | N/A | |
| 2021 | Ram | 1500 Classic | 5.7L | V8 | N/A | |
| 2021 | Ram | 2500 | 6.4L | V8 | N/A | |
| 2021 | Ram | 3500 | 6.4L | V8 | N/A | |
| 2020 | Dodge | Challenger | 6.2L | V8 | N/A | |
| 2020 | Dodge | Charger | 6.2L | V8 | N/A | |
| 2020 | Fiat | 500X | N/A | |||
| 2020 | Jeep | Cherokee | 2.0L | L4 | N/A | |
| 2020 | Jeep | Grand Cherokee | 6.2L | V8 | N/A | |
| 2020 | Jeep | Renegade | 1.3L | L4 | N/A | |
| 2020 | Jeep | Wrangler | 2.0L | L4 | N/A | |
| 2020 | Ram | 1500 | 5.7L | V8 | N/A | |
| 2020 | Ram | 1500 Classic | 5.7L | V8 | N/A | |
| 2020 | Ram | 2500 | 6.4L | V8 | N/A | |
| 2020 | Ram | 3500 | 6.4L | V8 | N/A | |
| 2019 | Dodge | Challenger | 6.2L | V8 | N/A | |
| 2019 | Dodge | Charger | 6.2L | V8 | N/A | |
| 2019 | Fiat | 500X | N/A | |||
| 2019 | Jeep | Cherokee | 2.0L | L4 | N/A | |
| 2019 | Jeep | Grand Cherokee | 6.2L | V8 | N/A | |
| 2019 | Jeep | Renegade | 1.3L | L4 | N/A | |
| 2019 | Jeep | Wrangler | 2.0L | L4 | N/A | |
| 2019 | Ram | 1500 | 5.7L | V8 | N/A | |
| 2019 | Ram | 1500 Classic | 5.7L | V8 | N/A | |
| 2019 | Ram | 2500 | 6.4L | V8 | N/A | |
| 2019 | Ram | 3500 | 6.4L | V8 | N/A | |
| 2018 | Dodge | Challenger | 6.2L | V8 | N/A | |
| 2018 | Dodge | Charger | 6.2L | V8 | N/A | |
| 2018 | Jeep | Grand Cherokee | 6.2L | V8 | N/A | |
| 2018 | Jeep | Wrangler | 2.0L | L4 | N/A | |
| 2018 | Ram | 1500 | 5.7L | V8 | N/A | |
| 2018 | Ram | 2500 | 5.7L | V8 | N/A | |
| 2018 | Ram | 3500 | 5.7L | V8 | N/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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.