Volvo 7th Injector and AHI Module Volvo D13 | Replaces 21407621, 23185531 | FleetRun FR-AFTR001-KIT

Aftertreatment 7th Injector and AHI Module Kit for Volvo / Mack. Our kits are made with quality in mind, meeting or exceeding OEM standards.

What Is An Aftertreatment Fuel Injector?

An Aftertreatment Hydrocarbon Injector (AHI); otherwise known as a 7th injector or an Aftertreatment Fuel Injector plays a key role in an emissions compliant heavy duty trucks DPF regeneration process. Once the AHI receives a signal from the engines ECM it sprays diesel fuel accordingly into the exhaust stream therefore creating a major increase in exhaust temperature allowing the truck to complete the DPF regeneration.

What Is an AHI Dosing Module?

The AHI Dosing Module controls the amount of fuel and the time at which it goes to the Aftertreatment Fuel Injector (AFI) through a signal from the ECM. The module contains non-replaceable valves and components within itself that cause it to be a common failing point from the point it was introduced (2013 and up).

Components

There are 2 electrical connections, 1 is the main harness and the other is the fuel pressure sensor, along with 2 fuel connections, 1 on the rear side being the delivery to the Aftertreatment Fuel Injector and the other on top which is the supply to the module. Lastly, there is 1 air connection (which also can be problematic considering the module has its own air pressure regulator and air filter).

Common Issues

Although the Aftertreatment Fuel Injector may work thoroughly to increase exhaust temperature, they have common issues of getting face plugged at the injection ports causing all sorts of problems with the aftertreatment system of the truck. Many engine manufacturers recommend cleaning intervals to prevent this issue from getting out of hand. Every time an injector is cleaned it is necessary to purchase a gasket kit which often times includes unnecessary bolts and spacers that are not cost effective. Purchasing FleetRun AHI gasket kits eliminates that issue by providing just the gasket and isolator which can save individuals and fleets more money on parts.

Engines

• Volvo D11
• Volvo D13
• Mack MP7
• Mack MP8

Vehicles

• 2013-2018 Volvo VNL
• 2013-2018 Volvo VNM
• 2013-2018 Volvo VNR
• 2013-2018 Volvo VN Series
• 2013-2018 Mack Pinnacle
• 2013-2018 Mack Granite
• 2013-2018 Mack Anthem

• 043-007-165

• For other information such as tips and tricks or troubleshooting from technicians and shops visit our Shop Talk page from our menu

This product may contain chemicals known to the State of California to cause cancer. - www.P65Warnings.ca.gov