Application and Function

The World American WA912-19-8217 is a heavy‑duty NOx sensor engineered for commercial truck exhaust aftertreatment systems. It provides continuous measurement of nitrogen oxides in the exhaust stream so engine and SCR controls can manage dosing and diagnostics effectively. Built with a 23.88 in lead and a 4‑pin connector, this sensor is designed for an OE‑style connection and straightforward routing on common chassis layouts. It serves as a direct replacement for multiple references, including Detroit Diesel A0091530628, A0101532228, and EA0101532228; Freightliner DDE A0091530628 and DDE A0101532228 variants; Global Parts Distributors 1815152 and 1815196; Walker Exhaust 285‑1013; and Automann 577.468. The unit ships new at 0.60 lb and includes a Proposition 65 warning for cancer and reproductive harm.

Service Advantages

Spec’d for demanding fleet environments, the WA912-19-8217 helps restore reliable NOx feedback when replacing a failed or out‑of‑range sensor—supporting correct SCR dosing and fault‑code resolution when used with a properly functioning aftertreatment system. The OE‑style 4‑pin connector and correct harness length promote quick installation and reduce the likelihood of wiring strain or misrouting. Consolidated cross‑references simplify sourcing, making it a practical stocking choice for mixed fleets running Detroit Diesel/Freightliner platforms and related applications.