The Duramax is a General Motors diesel engine family for light to medium duty trucks, designed by GM and Isuzu. The 6.6-liter Duramax is produced by DMAX, a joint venture between GM and Isuzu in Moraine, Ohio.
To determine the correct part number and configuration available, please gather the VIN (Vehicle Identification Number).
Depending on the model this may be all that is needed.
If you have a C4500, C5500 or C6500, additional information will be needed to determine the correct engine.
Engine: 6.6L Duramax LML, 90 degree V8 diesel
Displacement: 403 cubic inches, 6.6 liters
Head/Block Material: Aluminum cylinder heads, cast iron engine block
Compression Ratio: 16.0 : 1
Firing Order: 1-2-7-8-4-5-6-3
Bore: 4.06″ (103 mm)
Stroke: 3.90″ (99 mm)
Aspiration: Turbocharged & intercooled – Garrett variable vane (VVT), variable geometry turbocharger (VGT) with air-to-air intercooler
Injection: Direct injection, 2000 bar (~30,000 psi) Bosch high pressure common rail w/ CP4 injection pump and piezo injectors
Valvetrain: OHV (overhead valve), 4 valves per cylinder, mechanical roller lifters
Oil Capacity: 10 quarts w/ filter (9.5 liters)
Fuel Compatibility: Ultra low sulfur diesel (ULSD) or max B20 biodiesel blend
Max Shift RPM: 3,000 rpm
Peak Horsepower: 397 hp @ 3,000 rpm
Peak Torque: 765 lb-ft @ 1,600 rpm
Before calling to request price and availability, please gather the following information from the data tag located on the valve cover:
Vehicle/equipment make and model
Sump location (front, rear, center)