Engine-maker Cummins will offer a Sulfur Tolerance Kit, allowing export of used Tier 4 Interim and Tier 4 Final equipment into regions where ultra-low sulfur diesel is not available. The kit allows an engine to be operated on fuels containing far more sulfur than ultra-low sulfur diesel, enabling a second life for the engine outside of North America and Europe.

The CSTK is intended to provide options to operators and dealers who may ultimately sell Tier 4-powered equipment in the used market, offering flexibility in the regions into which they deliver the equipment. The kits can be used for Tier 4 engines from 49 hp to 675 hp.

The kit protects the engine and exhaust after-treatment from the harmful effects of high-sulfur fuel. Tier 4 interim and final engines require the use of ULSD to reduce particulate matter, soot and sulfur dioxide in order to meet emissions regulations in North America and Europe. ULSD is not widely available outside of those regions.

The STK includes new engine calibrations and hardware. The kit is intended for used engines that are exported into non-regulated regions.

“The introduction of the Sulfur Tolerance Kit allows customers to sell used Tier 4-powered machines into a non-emissionized country, helping to retain its resale value and ensuring that the next owner will experience the reliability and durability that customers have come to expect from Cummins,” said Hugh Foden, Cummins executive director – off-highway business.”