Description
The PACCAR PX-7 and Cummins ISB (specifically the 6.7L variant) are essentially the same medium-duty diesel engine. PACCAR—the parent company of Kenworth and Peterbilt—brands this Cummins-built engine as the PX-7. They share identical internal components, parts, and performance metrics, but have different exterior paint and minor branding.
Key Identical Specs
Displacement: 6.7 liters
Configuration: Inline 6-cylinder
Horsepower Range: 200 to 360 hp
Torque Range: 520 to 860 lb-ft (up to \(1,200\) Nm depending on calibration)
Important Distinctions
Support & Diagnostics: Both engines use Cummins electronic diagnostic software (like Cummins Insite), and you can order the exact same replacement parts through both Cummins dealers and PACCAR (Kenworth/Peterbilt) dealerships.
Exterior Layout: Because of how they are integrated into specific truck chassis, you might find minor accessory differences like a differently positioned fuel pump, oil pan size, or bracket placements.
Reputation: Both platforms suffer from common modern diesel ailments if not maintained perfectly, particularly with EGR (Exhaust Gas Recirculation) and DPF (Diesel Particulate Filter) carbon buildup.
Since the PX-7 is a rebranded Cummins ISB, maintenance, parts sourcing, and repairs are interchangeable, making the ownership experience highly similar.Specifications
Year2020
ManufacturerKENWORTH
ModelT270
Mileage203,590 mi
VIN1NKHHM6X9LR311304
Hours7,902
ConditionUsed
Stock Number24719
Operating ConditionOperable
Horsepower300 HP
Engine ManufacturerCUMMINS
Engine ModelISB6.7
Engine Serial Number74434257
Fuel TypeDiesel
Engine BrakeYes
TransmissionAutomatic
Transmission ManufacturerALLISON
Transmission TypeAllison RDS
Ratio5.57
SuspensionAir Ride
Number of Rear AxlesSingle
Gross Vehicle Weight RatingClass 6: 19,501 - 26,000 pounds
Gross Vehicle Weight26,000 lb
Front Axle Weight10,000 lb
Rear Axle Weight16,000 lb
WheelsAll Steel
Wheelbase270 in
Drive SideLeft Hand Drive
Lift End GateYes
Body CompositionFiberglass Reinforced Plywood
Fuel Capacity80 gal
ColorWHITE
CabStandard Cab
DoorsRoll up
Body Length26 ft
Body Width102 in
Internal Height103 in
Year2020|
ManufacturerKENWORTH|
ModelT270|
Mileage203,590 mi|
VIN1NKHHM6X9LR311304|
Hours7,902|
ConditionUsed|
Stock Number24719|
Operating ConditionOperable|
Horsepower300 HP|
Engine ManufacturerCUMMINS|
Engine ModelISB6.7|
Engine Serial Number74434257|
Fuel TypeDiesel|
Engine BrakeYes|
TransmissionAutomatic|
Transmission ManufacturerALLISON|
Transmission TypeAllison RDS|
Ratio5.57|
SuspensionAir Ride|
Number of Rear AxlesSingle|
Gross Vehicle Weight RatingClass 6: 19,501 - 26,000 pounds|
Gross Vehicle Weight26,000 lb|
Front Axle Weight10,000 lb|
Rear Axle Weight16,000 lb|
WheelsAll Steel|
Wheelbase270 in|
Drive SideLeft Hand Drive|
Lift End GateYes|
Body CompositionFiberglass Reinforced Plywood|
Fuel Capacity80 gal|
ColorWHITE|
CabStandard Cab|
DoorsRoll up|
Body Length26 ft|
Body Width102 in|
Internal Height103 in|
