OEM Designed & Manufactured Navistar 7503569C1 6045112C1 Outlet NOx Sensor

Navistar 7503569C1 6045112C1 Outlet NOx Sensor

Replace a failed International / Navistar outlet NOx sensor with this OEM designed and manufactured replacement for 7503569C1 and 6045112C1. Skyline SNX403 is designed for compatible EPA17 International / Navistar applications and is used in the outlet / downstream position of the exhaust aftertreatment system.

Plain white box on the outside. OEM on the inside. Skyline SNX Series NOx sensors are produced by an original-equipment supplier, providing OEM-level design and manufacturing without the added cost of OEM-branded packaging. The result is OEM quality at an aftermarket price, backed by a 1-Year Unlimited Mileage Warranty.

Navistar NOx Sensor Cross References

Fitment Verification: Match the OEM or manufacturer number stamped on the original NOx sensor or control module to one of the cross-reference numbers below before ordering.

Plain White Box on the Outside. OEM on the Inside.

Skyline SNX Series NOx sensors are OEM designed and manufactured by an original-equipment supplier. The sensor hardware and application-specific electronics are engineered to deliver the fit, communication, and emissions-system performance expected from an original-equipment NOx sensor.

Plain white box on the outside. OEM on the inside. Skyline provides OEM-quality construction and performance while eliminating the added cost associated with OEM-branded packaging.

7503569C1 Navistar Outlet NOx Sensor

Skyline SNX403 is an outlet / downstream NOx sensor for compatible International / Navistar exhaust aftertreatment systems. The outlet sensor measures NOx concentration after the SCR system and helps the engine control system monitor SCR conversion efficiency and emissions performance.

The primary OEM search number for this sensor is 7503569C1, with 6045112C1 as an additional International / Navistar OEM reference.

Navistar 6.6L EPA17 Engine Applications

The primary Skyline SNX403 application is the Navistar 6.6L EPA17 engine family using the matching 7503569C1 or 6045112C1 outlet NOx sensor.

The 7503569C1 / Walker 1004-1077 sensor family also appears in select Cummins-powered heavy-duty applications. Because NOx sensor software, calibration, harness configuration, and sensor position can vary, always verify fitment using the exact OEM number rather than engine family alone.

International Truck Applications

Compatible International truck applications may include select configurations of:

• International LT625
• International LoneStar
• International HX520
• International HX620
• International ProStar
• International 9900i

Truck model alone does not guarantee fitment. Applications can vary by model year, engine, aftertreatment configuration, and NOx sensor calibration. Always confirm 7503569C1 or 6045112C1 on the original sensor before ordering.

7503569C1 SNX403 NOx Sensor Specifications

OEM Quality at an Aftermarket Price

Skyline SNX403 combines OEM design and manufacturing, Made in the USA construction, and a 1-Year Unlimited Mileage Warranty with aftermarket pricing.

For compatible International / Navistar applications requiring the outlet NOx sensor, SNX403 provides a premium replacement centered on the high-priority OEM reference 7503569C1 and related OEM number 6045112C1.

Fitment Verification

NOx sensors are position-specific electronic components and can vary by engine, truck configuration, model year, emissions system, harness, connector, and software calibration. Always verify the exact OEM number stamped on the original sensor or control module and confirm that the sensor being replaced is the outlet / downstream unit before ordering.