Engine: Caterpillar 3126, C7 Applications: 2000-2012 GMC Truck 3126, C7 Engine Horsepower: 230 HP Reference Part Numbers: 237-5272, 237-5270, 10R1795, 237-5271, 237-5254,237-5252, 237-5253, 237-5251, 237-5255, 238-5057, etc. Note * No core charge, Brand new, 1 Year Unlimited Miles Warranty. * Highest quality aftermarket turbo. * Same performance as stock turbo, much better price. * Contact us for technical support.