Diesel Performance parts from 4WheelOnline keep your diesel engine running at peak performance. The diesel engine was invented by Rudolph Diesel in 1893. The diesel engine has the best thermal efficiency of any normal internal or external combustion engine. That means that it is the best at converting money at the pump into work or power out of the engine. Diesel fuel is more likely than other types of fuel to have problems with incomplete combustion and deposits. Deposits on the injectors, valves or in the combustion chambers negatively impact a diesel engines performance. We have the LOWEST PRICES on Diesel Performance Truck Products from Cummins Diesel Performance, PowerStroke Diesel Performance, and Duramax Diesel Performance. We also provide complete selection of Dodge Diesel, Ford Diesel, and Chevy / GMC Diesel Products. Our products keep your diesel engine running at peak performance. Prevent the build-up of contaminants in the fuel systems and repository tanks which can quickly clog and congest filters resulting in accelerated fuel pump wear, and ultimately lead to engine failure. If your engine's performance is less than desirable, worry no more... Diesel Performance Products can turn it around and give you a dependable diesel engine that will keep going all year around. Diesel Performance Products are better at cleaning fuel which in turn reduces downtime, extends pump and injector lifespan and adds two to three times the filter duration. Diesel Performance Products increase fuel mileage and maximize engine performance. Diesel emissions and oil stays cleaner longer, improving power and performance as well as prolonging the life of the engine!