Caterpillar Unveils Cat® Low Emission Engine Upgrade for G3516 LE Petroleum Engines

For Worldwide Release: January 2014
Release Number: GP14PR2

Upgrade Offers Minimally Invasive Lowered Emissions for Gas Compression Applications

Houston, TX – Caterpillar Oil & Gas is pleased to announce the availability of a Cat® Low Emission Engine Upgrade kit for select G3516 LE petroleum engines in gas compression applications. The upgrade kit allows operators to modify existing engines to a lower emission configuration, enabling operation at 0.5 or 1.0 g/bhp-hr NTE NOx levels. The engine upgrade is an economic, minimally invasive solution that allows the engine to offer the same power and fuel tolerance while simultaneously increasing altitude and turndown capability. The upgrade kits are now available for global customers to order from the worldwide Cat Dealer Network.

“We are committed to continuously introducing solutions that power our customers to better performance while meeting the more stringent emissions standards as the world leader in gas engine technology,” said Brenna Geswein, Caterpillar Oil & Gas application engineer. “We designed the Low Emission Engine Upgrade kit for the G3516 LE to be installed as quickly and easily as possible without sacrificing any dimension of the engine’s performance in gas compression applications.”

The power rating for the G3516 LE will remain the same at 1340 bhp @ 1400 rpm. The upgrade kit utilizes existing technology and proven parts; trained experts at customers’ local Cat dealer are available to bring current engines up to the latest technology level, regardless of where the engine is in its lifecycle. New components in the kit include a two-stage aftercooler, venture fuel mixer, turbochargers, oil cooler, air cleaners, gas shutoff valve and software. Existing engines must have the ADEM™ A3 engine control module, Air Fuel Ratio Control (AFRC) and a NOx sensor. Upgrade kits are available to bring engines up to this configuration.

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About Caterpillar Oil & Gas

Caterpillar Oil & Gas, Caterpillar Inc.’s oil and gas division with headquarters in Houston, Texas, groups all the sales and service activities for Cat oil and gas power solutions. Since the 1930s, Caterpillar has manufactured engines for the oilfield and today provides premier power solutions with outputs from 31 to 16,000 kW.  The sales and service network includes more than 2,100 dealer locations world-wide dedicated to support customers in the drilling, production, well service and gas compression segments. More information is available at:

About Caterpillar

For more than 85 years, Caterpillar Inc. has been making progress possible and driving positive and sustainable change on every continent. With 2012 sales and revenues of $65.875 billion, Caterpillar is a technology leader and the world’s leading manufacturer of construction and mining equipment, clean diesel and natural gas engines and industrial gas turbines. More information is available at

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