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K&N part # 63-3087 (Black Pipe) # 63-3087KP (Alum Pipe) Air Intake fits 2015 Chevy Silverado 2500 HD/3500 & GMC Sierra 2500 HD/3500 Duramax Diesel. The combination of the highly engineered rotationally molded high-density polyethylene (HDPE) air intake tube, K&N high-flow oversized conical diesel air filter, and application specific heat shield used in the 2015 Silverado 2500 HD/3500 and Sierra 2500 HD/3500 diesel air intake system results in massive power gains for the 6.6L Duramax turbo diesel of +24 horsepower occurring at 2,950 RPM and the estimated peak torque gain of +29 lb-ft taking place at 2,850 RPM.

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