Return Fuel Pressure Test Port for 2011-2016 LML Duramax Fleece Performance MERCHANT AUTOMOTIVE Includes exhaust downpipe adapter

Includes exhaust downpipe adapter

Replaced Rail Connections/Thru-Rod/Nuts/Belleville Washers

Utilizes one large #333 O-ring

Black braided nylon coolant bypass hose with AN fittings

Stock appearing drop in turbo

Return Fuel Pressure Test Port for 2011-2016 LML Duramax Fleece Performance MERCHANT AUTOMOTIVE Includes exhaust downpipe adapterThe return fuel pressure test port for the 2011 2016 LML Duramax is designed to aid the technician in troubleshooting return fuel pressure, often necessary when diagnosing CP4 pump failures. When installed in the return fuel system, it allows for a pressure gauge to be connected to the return return fuel side to monitor pressure. Fits: 2011 2016 LML Duramax