Maximize Performance. Minimize Heat. Protect Your Engine.

Overheating rear cylinders are robbing your 1998.5-2018 Dodge Cummins 5.9L & 6.7L of power and longevity-fix it in under 30 minutes with the Motorsport Diesel Coolant Bypass Kit. Engineered for superior cooling efficiency, this billet aluminum kit relieves excess pressure, reduces water pump strain, and prevents costly engine wear. Featuring a precision pressure relief valve, it dynamically regulates flow-something a thermostat simply can’t do. Whether you’re towing, daily driving, or chasing horsepower, this is the upgrade your Cummins can’t afford to go without. Get yours now and keep your engine running stronger, longer.

The 24 valve 5.9 and 6.7 engines have 11 steel press in freeze plugs beneath the valve cover. These press in plugs can be blown out due to a combustion leak from a head gasket failure. Engines equipped with a multi layer steel head gasket, can actually leak under high cylinder pressure and reseal themselves [...]

Motorsport Diesel offers complete injector testing services. We use approved testing plans to determine the current state of the injector. We start with armature lift measurement, if that is within range we will then perform a baseline test. If it fails here we do not proceed further. If flow is within range we will then [...]

We offer common rail high pressure pump testing services. If you are replacing injectors, it is a good idea to also check the condition of the pump, after all it could possibly be the reason for injector failure. We test the pump for output at various rpm ranges, such as cranking speed, and wide open [...]

We are the “OG Stroker Pump” producer from 2007 until today. We start with the best pumps to base our modifications upon, if it is not new, surplus new or a used pump that provides no less than 98% volumetric efficiency, then we do not use them. The new for 2025 Emax pump is designed [...]

The image of the pump, is the actual pump as mounted and plumbed on our testing platform. The outlet fitting will be replaced with the blanking fitting, this is a normal side outlet LBZ/LMM pump. We are the “OG Stroker Pump” producer from 2007 until today. Price includes a $300.00 refundable core charge, which will [...]

We are the “OG Stroker Pump” producer from 2007 until today. We start with the best pumps to base our modifications upon, if it is not new, surplus new or a used pump that provides no less than 98% volumetric efficiency, then we do not use them. The new for 2025 Emax pump is designed [...]

We are the “OG Stroker Pump” producer from 2007 until today. This is a remanufactured pump, flowing at least 98% in volumetric efficiency. The new for 2025 Supermax pump is designed for performance applications needing to support over 900 RWHP, coming in with over 320 liters per hour of flow at 3500 the New Supermax [...]