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1992-2000 Chevy / GM 6.5L Coolant Filtration System

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From $159.00 to $209.00
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Product Description


DIESELSITE'S 6.5L Coolant Filter Kit can be used as a stand alone system or in conjunction with our Remote Fuel Filter Kit.  The mounting bracket supplied will allow you to install both systems side by side in the same location.

If you already have the bracket from your RFFK purchase, choose the option with no bracket in the drop-down selection.  Please note that a mounting bracket is required to use this kit following our instructions.

The DIESELSITE Coolant Filter Install Kit includes all fittings, hose and stainless steel clamps needed for installation.


Coolant filters are not a new idea to the diesel engine world. They come in most OEM applications for medium duty and OTR tractor trailer rigs. The idea was somehow tossed aside for light duty applications, most likely due to cost. For our light duty trucks it is a very important issue that needed to be addressed. Many diesel engines are cast with sand in the process. This sand is NOT completely removed from the system and much of this sand leaches out of the casting over time. This sand wears away at water pump seals, hoses and radiators. Removal of this sand can greatly increase your water pump life.

In addition to sand, there are other things that the filter is removing. SCAs, or supplemental coolant additives used in protecting against cavitation, often flake off the walls. This "precipitate" is a very abrasive particle, like a scale floating around freely in the system unless caught by a filter.

The DIESELSITE Coolant Filter Install Kit will remove the loose particles in your cooling system and give your water pumps, radiators, and radiator hoses the protection they need from these abrasive materials.  Wear is virtually eliminated by the removal of undesirable elements in your system. The desirable elements like the actual chemical used in the SCA are not removed.


The DIESELSITE Coolant Filter Kit is a bypass-style system that filters a small amount of the coolant on each pass.  By using a spin on filter we make it easy for you to change your coolant filter at regular intervals.  These filters will remove all solid particles -- new or old.  It is never too late to install a coolant filter in order to extend the longevity of your cooling system components.  While you cannot reverse the damage that is already done, you can eliminate further damage from occurring.  This kit is a must have improvement to every truck.

In the past few decades of doing business, we've seen a pattern of water pump failure. If you are one of the unlucky owners who have lost your pump between 40,000 and 80,000 miles it's not too late to protect your new pump.  While some damage to your pump may already be done, a coolant filter install kit will extend the longevity of your pump before it fails, and ensures that your next water pump will last much longer than your first one did. 


Use one filter every three months for the first nine months after installation.  The lack of flow into the expansion tank is an indication that your filter is plugged.  Change the filter if it plugs up before the 3 month interval.  After the 4th filter is installed, your filter should need changed only once per year.


Why should you filter your coolant system?  Watch this short video on Engine block production. 
How much sand was left in your engine block?