Cummins NTA855-C335 Oilfield Engine

Cummins NTA855-C335 Oilfield Engine | Technical Specification & Sourcing Guide
The Cummins NTA855-C335 is a 14.0L, 6-cylinder inline turbocharged and aftercooled heavy-duty diesel engine configured specifically for oilfield and severe industrial duty cycles. Operating at 335 HP at 2100 RPM, this engine features heavy-duty cooling, a rugged block architecture, and the Cummins PT (Pressure Time) fuel system designed to handle continuous high-torque operations in remote, high-ambient-temperature drilling and well-servicing environments.

Cummins PT Fuel System: Mechanical-hydraulic architecture maintains precise injection pressure regardless of engine speed, reducing sensitivity to varying fuel qualities found in remote field sites.

Holset Turbocharging: Wastegated exhaust gas turbocharger matched specifically for high-torque rise at low RPMs, minimizing smoke and thermal stress during sudden load acceptance.

Plate-Type Lube Oil Cooler: Integrated heavy-duty oil cooling system reduces oil degradation under continuous full-load pumping operations.

Heavy-Duty Cast Iron Block: Deep-skirt crankcase design with replaceable wet liners facilitates in-frame overhauls and extends core service life.

Corrosion-Resistant Auxiliary Components: Treated external electrical harnesses and brackets built to withstand high-humidity, sour-gas, and saline oilfield environments.

Machining Tolerances: Engine blocks and cylinder heads machined on CNC boring and milling centers holding tolerances within 0.01 mm.

Component Testing: Crankshafts undergo magnetic particle inspection (MPI) for micro-cracks prior to assembly; connecting rods are weight-matched within +/- 2 g.

Dyno Testing: 100% of assembled engines undergo a computerized dynamometer test run following ISO 3046 standards, measuring fuel consumption, exhaust temperature, oil pressure, and load response across a 4-stage endurance cycle.

Traceability: Individual serial numbers stamped on blocks and rotating assemblies tied to complete material test reports (MTRs) and dyno test sheets.

Packaging: Vacuum-sealed in anti-corrosion VCI (Volatile Corrosion Inhibitor) vapor bags, bolted to heavy-duty fumigated ISPM 15 wooden export cradles, and protected with heavy rain covers.

Accessory Kit: Loose components (filters, wiring harnesses, mating flanges) secured in sealed, moisture-proof auxiliary wooden crates.

Logistics Support: Ocean freight (LCL/FCL), air cargo, and specialized heavy-haul domestic transport coordination with complete commercial invoicing, packing lists, and certificate of origin documentation.

To receive a formal commercial quotation including freight estimates, delivery lead times, and specific CPL configuration sheets, please provide the following details to our engineering sales team: