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Standard Ignition S2501 Nitrogen Oxide (NOx) Sensor Connector
NOx Sensor Connector Replacement
Standard Ignition S2501 is a direct replacement nitrogen oxide sensor connector for repairing damaged electrical connections without replacing the full harness. It uses a female oval connector design with 6 female blade terminals and protective tubing included for added protection in demanding underhood conditions.
Key Features
- Direct replacement NOx sensor connector for electrical repair
- Female oval connector with 6 blade-style female terminals
- Housing made from polyamide resin for durability
- Terminals use copper alloy, brass, and phosphor bronze materials
- 100% tested for mechanical and electrical fit, form, and function
- Compatible with 2017-2018 Chevrolet Silverado 2500 HD and Silverado 3500 HD, plus 2017-2018 GMC Sierra 2500 HD and Sierra 3500 HD
Detailed Description
Built for repair work on diesel emissions and exhaust aftertreatment wiring, Standard Ignition S2501 restores the connector interface at the NOx sensor circuit with a direct-fit electrical connector. This part number is used on 2017-2018 Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as 2017-2018 GMC Sierra 2500 HD and Sierra 3500 HD, with downstream air injection pump check valve placement noted in the fitment data. Standard Ignition S2501 is a practical choice when the original connector body is cracked, heat-damaged, or no longer locking securely.
This part cross-references GM 13586091 for the same application.
What It Helps Repair
- Broken or heat-damaged NOx sensor connector housings
- Corroded or loose terminal connections
- Intermittent sensor signal issues caused by damaged wiring ends
- Connector lock or retention problems at the sensor plug
- Electrical faults related to exhaust aftertreatment connector damage
Installation Notes
Verify connector shape, terminal count, and wire layout before installation. Match the vehicle application carefully on 2017-2018 Chevrolet Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 2500 HD, and Sierra 3500 HD models. Proper terminal seating and secure locking are important for reliable electrical contact in NOx sensor circuit repairs.
Quality Assurance
Standard Ignition tests these electrical connectors for proper mechanical and electrical fit, form, and function. The connector materials are selected for durability in harsh environments, with high-grade terminal metals and a polyamide housing for long service life.
| Brand | Standard Ignition |
|---|---|
| Part Number | S2501 |
| Connector Gender | Female |
| Connector Shape | Oval |
| Terminal Gender | Female |
| Terminal Type | Blade |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2018 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
| 2018 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
| 2018 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
| 2018 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
| 2017 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
| 2017 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
| 2017 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
| 2017 | GMC | Sierra 3500 HD | 6.6L | V8 | N/A | Downstream air injection pump check valve placement. |
* 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.