New 172743 Detroit Diesel Series 60 12.7L DDEC IV BorgWarner K31 Turbocharger - Turbo Centre Production Line

The 172743 Turbocharger is a purpose-matched BorgWarner K31 assembly for Detroit Diesel Series 60 12.7L DDEC IV, Caterpillar C12 applications where the K31 assembly is specified. It is built around the exact compressor, turbine, housing, and control specification associated with part number 172743, so fitment should be confirmed from the engine serial number and original turbo tag rather than by engine family alone.

This K31-family unit is used on Detroit Series 60 DDEC IV applications where a wastegated, medium-to-high-mount turbo is required. The wastegate controls turbine drive pressure as engine load rises, helping the compressor maintain the intended boost curve without overspeeding the rotating assembly. Correct housing orientation, wastegate setting, and oil supply are especially important on this platform because a restriction or exhaust leak can quickly change boost response and exhaust temperature.

This listing is supplied as the turbocharger configuration shown. Correct installation requires clean oil feed and drain paths, a sealed charge-air and exhaust system, proper air filtration, and confirmation that the original failure did not leave debris or contamination in the engine system.

Turbo Centre Production Line units are assembled from new components to controlled specifications. The rotating group is balanced, bearing clearances and oil passages are checked, housings and control hardware are inspected, and wastegate or vane operation is verified where applicable before shipment. The result is a direct-replacement turbo built for dependable highway, vocational, fleet, and industrial service without a core return requirement.