The Alltrux ATX24263 DEF Dosing Valve replaces OEM 22391563 and is designed for Volvo and Mack heavy-duty diesel engines equipped with SCR (Selective Catalytic Reduction) aftertreatment systems, including D11, D13, MP7, and MP8 platforms. This dosing valve precisely injects diesel exhaust fluid (DEF) into the exhaust stream to help reduce nitrogen oxide (NOx) emissions and maintain emissions compliance.

The DEF dosing valve plays a critical role in the aftertreatment system by delivering controlled amounts of DEF to the SCR catalyst, where harmful NOx emissions are converted into harmless nitrogen and water vapor. A properly functioning dosing valve ensures accurate DEF delivery, optimal emissions reduction, and consistent engine performance while preventing fault codes or derate conditions related to emissions system inefficiencies.

Engineered for the demanding thermal and vibration conditions found in heavy-duty trucking applications, this replacement DEF dosing valve provides reliable operation for fleet maintenance, emissions repairs, and preventive service programs. Always verify engine model compatibility and electrical connector configuration prior to installation to ensure proper fitment and system performance.

Key Features

Direct replacement for OEM 22391563
Alltrux Part Number: ATX24263
DEF dosing valve for SCR aftertreatment systems
Provides precise DEF injection for NOx emissions reduction
Supports proper emissions compliance and engine performance
Designed for Volvo and Mack D11, D13, MP7, and MP8 engines

Technical Specifications

Brand: Alltrux
Part Number: ATX24263
OEM Cross Reference: 22391563
Product Type: DEF Dosing Valve (SCR Injector)
System: Emissions / Aftertreatment (SCR/DEF)
Condition: New Aftermarket
Application: Volvo and Mack Heavy-Duty Diesel Engines (D11, D13, MP7, MP8)

Cross References

OEM: 22391563
ALLTRUX: ATX24263