GPD 1815147 Upstream Nitrogen Oxide NOx Sensor Direct Fit Replacement

The GPD 1815147 is a direct-fit upstream Nitrogen Oxide (NOx) Sensor designed for heavy-duty diesel applications equipped with Selective Catalytic Reduction (SCR) exhaust aftertreatment systems. This sensor continuously measures nitrogen oxide (NO and NO₂) concentrations in the exhaust stream before the SCR catalyst, providing critical feedback to the engine control module to optimize urea injection and maintain emissions compliance.

GPD (Global Parts Distributors, LLC) engineers this sensor to meet or exceed OEM fit, form, and function standards. Each unit undergoes durability testing to ensure reliable performance in the high-heat, high-vibration environment of a diesel exhaust system. Operating at a nominal 12 volts, it installs as a plug-and-play replacement with no modifications required.

Key Features:

• Direct-fit upstream NOx sensor replacement — no modifications required
• Monitors NO and NO₂ levels to support SCR system efficiency and emissions compliance
• 12V nominal operating voltage; compatible with 9–36V supply range
• Engineered to meet or exceed OEM specifications
• Sold individually

Cross-Reference Part Numbers:

• Cummins: 2894941, 2894941RX, 5WK96673A
• Dorman: 904-6019
• Automann: 577.90651
• Redline Emissions Products: S11114

Installation Notes: Ensure sensor wiring is routed tension-free with a 180-degree service loop. Do not install near exhaust bends, as turbulence can affect sensor accuracy. Do not wash, submerge, or apply chemicals or sprays to this sensor.