Review on π K&N Cold Air Intake Kit 77-3047KP: High Performance, Increased Horsepower: Compatible with 2004-2005 Chevrolet/GMC (Silverado 2500HD, Silverado 3500, Sierra 2500HD, Sierra 3500) by Ian Iknokinok
Cheap Performance Upgrade
Bought for my 2004 Silverado 2500HD. The engine breathes much better. Fuel economy increased by 2.5mpg. It pays for itself in about 2 months if diesel fuel does not increase sharply in price, in which case it pays for itself in 1 month. Excellent delivery. For now.
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