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The QSK38 retains the proven V12 configuration and 38-liter displacement of its K1500E predecessor, but incorporates a new High Pressure Modular Common Rail (MCR) fuel system and an advanced electronic control module in order to meet U.S. EPA Tier 2 emissions requirements. Other features include new injectors, pistons, turbocharger and valve covers. Together with a robust block crankshaft and camshaft, this results in an average design life of 625,000 gallons to overhaul.

The QSK38 with MCR technology helps to reduce noise emissions and engine vibration, resulting in a safer and more comfortable work environment for equipment operators and mine personnel.  The MCR  fuel system maintains high injection pressures regardless of engine speed - unlike conventional injection systems - for exceptional performance at every rpm. Ratings at 1086 hp and 1200 hp (810-895 kW) deliver the power you need for haul trucks and excavators.

Cummins analysis-led computer modeling has enabled Cummins to optimize the in-cylinder combustion system of the QSK38 which results in a reduction of NOx by 40% and particulate matter by 60%, achieving U.S. EPA Tier 2 emissions levels with minimal impact to fuel consumption.  And because the QSK38 meets emission requirements with an in-cylinder solution, there’s minimal installation impact with no complex aftertreatment.

Every QSK38 engine is covered by Cummins base warranty, one of the most comprehensive and simplest plans in the industry.

View a printable file of the QSK38 brochure.
Engine ModelAdvertised hp (kW) @ rpmPeak Torque lb-ft (N•m) @ rpm
QSK38-10861086 (810) @ 18003591 (4869) @ 1350
QSK38-12601260 (940) @ 18003861 (5235) @ 1400
QSK38-12001200 (895) @ 1800 3861 (5235) @ 1400 

Ratings are continuous.

Additional ratings may be available. Check with your Cummins distributor or dealer.

 
Engine Type Vee, 4-Cycle, 12-Cylinder
Displacement  2307 cu. in.  38 liters 
Advertised Horsepower 1086-1260 hp810-940 kW
Peak Torque 3591 lb-ft @1350 rpm4869 N•m @ 1350 rpm
Bore and Stroke 6.25 in x 6.25 in159 mm x 159 mm
Oil System Capacity87.25 U.S. qt82.6 liters
Coolant Capacity* 118 U.S. qt111.7 liters
Length 86.5 in2198 mm
Width 58.7 in1491 mm
Height 68 in1729 mm
Weight (Wet) 9039 lb4100 kg

* Engine only

 
  • Power Cylinder Package - Proven single-piece ferrous cast ductile iron pistons and cooling nozzles for maximum durability and reliability - combined with an advanced piston design that uses nitrided liners and cast-iron top rings to handle high injection pressures and provide a 10% longer life-to-overhaul compared to two-piece pistons.
  • High Pressure Modular Common Rail (MCR) Fuel System - Cummins high pressure fuel pump and modular common rail system provides full-authority electronic control of the fuel pump and injectors for precise control of both injection pressure and timing. Each injector includes its own integrated accumulator, which helps to eliminate pressure pulsation between injectors and improve stability.
  • Prelub™ System - Eliminates wear from cold and hot starts - increases life-to-overhaul by as much as 25%. Integral or remote mounting options.
  • Quantum System Electronics - High-speed Electronic Control Module (ECM) with a self-cooling mount is isolated from detrimental vibration loading. A field-proven, fully-sealed wiring harness with fail-safe connectors integrates the ECM with the engine sensors for optimized engine performance, monitoring and protection.  Quantum system technology is ideal for tough mining applications that demand continuous uptime carrying hundreds of tons capacity.
  • Fleetguard® ES Filtration - The two off-engine first stage (suction-side) filters provide 7 micron filtration and include water separation capability. The three second stage (pressure-side) filters are mounted on-engine and provide 3 micron filtration downstream of the gear pump. Service interval for both filter stages is 250 hours.
  • Advanced Engine Monitoring - Allows you to monitor engine performance cylinder by cylinder on a real-time basis. Also provides trending charts to help you keep preventive maintenance to a minimum without risking engine damage.
  • Two-Stage Cummins Oil Filters - Combination full-flow and bypass filtration to effectively remove harmful sludge and up to three times as many contaminants to reduce engine wear.
  • Premium Fan Drive – Incorporates large matched and sealed bearings, improved oil seals, and an improved idler system.  The fan drives have fixed fan centers with tensioning provided by a manually adjusted and maintenance free idler.  The fan drive is available with or without an electronically controlled oil-actuated fan clutch.

Longer Service Intervals - Achieved with Centriguard™ centrifuge filters, the CENTINEL™ continuous oil replacement system and the self-cleaning ELIMINATOR™ full-flow/bypass filtration system

Centriguard™ Centrifuge Filters - The Fleetguard Centriguard from Cummins Filtration is available for aftermarket installation to complement the spin-on lube filters for greater engine protection. 
CENTINEL™ Continuous Oil Replacement System – Extends oil drain and oil filter life, while improving the protective quality of engine oil.  Minimizes oil disposal costs, reduces downtime and increases productivity. 
ELIMINATOR™ Filtration System – Eliminates oil filter disposal headaches with a full-flow and centrifugal system that incorporates a permanent core. This optional feature eliminates up to 90% of lube system maintenance costs while increasing uptime by allowing 1,000 hours between filter changes.


Many options are available* to ensure your Cummins engine integrates perfectly into your product, including:

Installation configuration – numerous options are available including SAE flywheels and flywheel housings, exhaust outlet configurations, and accessory drive mounts.
Alternators – 24 volt alternators are available in a size to suit your application.
Air Compressors – water cooled and available in single or twin cylinder.
Fan Hubs – multiple combinations of mounting height, drive ratio and spacers ensure compatibility with your cooling package.
Hydraulic Pump Drive – conveniently located within the engine envelope to minimize installation impact.
Cold Starting Aids – grid heater, ether injection and oil pan heaters to help your engine start even in the most extreme temperatures.

*Not all options are available for each engine family. Please contact your local Cummins distributor or dealer for more information.

 
Click here to view a printable file of the Eliminator™ and Centinel™ brochure.
The Cummins QuickServe® Commitment.
 
Cummins QuickServe offers you factory-certified technicians, the most sophisticated diagnostic and repair tools in the industry, and the largest international parts and service network of any engine manufacturer. Our worldwide team of mobile service technicians is always ready to deliver service when and where you need it. Every minute. Every day. Every year.

The base warranty includes full coverage on every QSK38 engine and branded components, including electrics such as starters and alternators for unlimited hours during the first year of operation, extending through 2 years or 2,000 hours (whichever comes first). The base warranty also includes 3-year/10,000-hour standard protection on major components including block, crankshaft, camshaft and rods.

Extended coverage is available with our Encompass protection plans providing the flexibility to meet the needs of your mining operation.  Cummins Encompass has you covered, around the clock and around the globe.

For complete warranty details, please see the US and Canadian warranty brochure (3381321) or International warranty brochure (3381322).