G855E & GTA855E Gas Compression Applications

Power 157 - 225 hp
117 - 168 kW


Oil and Gas Gas Compression


The demands of wellhead and gathering compression applications require an engine that is reliable and durable. For dependable operations and world class support, you need the Cummins G855E and GTA855E – an emission compliant, high-performance natural gas engine that shares the proven heritage of the Cummins diesel engines and many of the same heavy-duty components. You can depend on Cummins engines to stay emissions compliant, keep maintenance costs down and the gas flowing. Every day.

General Specifications
Inline 6-Cylinder, 4-Cycle, Natural Gas

Bore 5.5 in (140 mm)
Stroke 6.0 in (152 mm)
Displacement 14.0 L (855 cubic in)
Engine Power* 157-220 hp (117-168 kW)
Compression ratio NA: 10:1 TA: 8.5:1
Aspiration Naturally aspirated or turbocharged aftercooled
Exhaust Type Watercooled manifold
Weight** 2970 lb (1347 kg)
Coolant capacity 5.5 gal (20.8 L)
Lube oil capacity 15 gal (57 L)
Rotation Counterclockwise

* Rating dependent
** Weight is approximate and varies with options.

Model Rating

Compression Ratio


188 hp (140 kW) @ 1800 rpm




157 hp (117 kW) @ 1500 rpm




256 hp (191 kW) @ 1800 rpm




225 hp (168 kW) @ 1800 rpm



(1) CUSTOMER-COMPLIANT UPGRADEABLE – This engine is capable of operating with a Three-Way Catalyst at this rating. It is the responsibility of the owner/operator to upgrade the engine with an air/fuel ratio controller and a Three-Way Catalyst capable of meeting the SI NSPS regulations. The owner/operator is required to conduct site compliance testing and submit documentation per the EPA SI NSPS requirements.

(2) This engine emits 2.0 gr/hp-hr NOx, 4.0 gr/hp-hr CO, 1.0 gr/hp-hr VOC. This engine does not meet the revised EPA SI NSPS requirements for non-emergency engines and is offered only for use outside the U.S.

* Requires EPA site validation testing.

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