G5.9E Gas Compression Applications

Power 70 - 99 hp
52 - 74 kW


Oil and Gas Gas Compression


Wellhead compression and artificial lifts require reliability and durability not found in every small natural gas engine. For dependable operations and world class support, you need Cummins G5.9E – an emission compliant, high-performance natural gas engine that shares the proven heritage of the Cummins B Series diesel engines and many of the same heavy-duty components. You can depend on the G5.9E to stay emissions compliant, keep maintenance costs down and the gas flowing. Every day.

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

Bore 4.02 in (102 mm)
Stroke 4.72 in (120 mm)
Displacement 5.9 L (359 cubic in)
Engine Power* 70-99 hp (52-74 kW)
Compression ratio 10.5:1
Aspiration Naturally aspirated
Exhaust Type Dry manifold
Weight** 964 lb (437 kg)
Coolant capacity 2.6 gal (9.8 L)
Lube oil capacity 6.6 gal (25.0 L)
Rotation Counterclockwise

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

Model Rating

Compression Ratio


99 hp (74 kW) @ 2000 rpm




84 hp (63 kW) @ 1800 rpm




70 hp (52 kW) @ 1500 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.

* Requires EPA site validation testing.

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