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Fleece Performance 11-16 GM 2500/3500 LML Duramax Return Fuel Pressure Test Port
Fleece Performance
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The 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 fuel side to monitor pressure.
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