Description: Paradox By Design CUCV 6.2 (6.5) COOLING SYSTEM UPGRADE KIT (patent pending) This is simply the best bang for the buck upgrade you can make to your truck, period! Must do before any performance or horsepower mods.All Military CUCV trucks with GM Detroit Diesel V8 6.2 engines all share an inherent design flaw in their cooling circuit. Due to the packaging of the cooling system, coolant distribution is disproportionately fed to the front of the engine block and heads. The rearmost cylinders run significantly hotter due to this inadequacy, while the fronts are overcooled. Diesel engines run best in a tight band of temperature. In the earlier 6.2 engines these higher rear temperatures led to many of the well known failures in those engines which are nearly always in the rear two cylinders. Later blocks increased block density and used better metallurgy, among other improvements, to reduce the catastrophic failures, but never addressed the cooling imbalance and the loss or performance from this. Paradox developed our system using proven technology from our Motorsports background. The Motorsports industry has long known of the benefits to balancing the temperatures across V8 engines, especially when running at the cutting edge of detonation needed to make maximum power. While that may not be the goal of most CUCV owners, cooler running temperatures, better power and efficiency are. Further, the reduced heat from the rear of the engine is a welcome reprieve from hot cabin temperatures, too. On average, the mechanical fan cycles on 25%-50% less than stock with our kit installed. This is the most obvious advantage to our kit as this greatly reduces the loss of power, added noise and fuel burn!The Paradox system opens up the blocked off rear coolant area of these engines and allows for flow to the front of the coolant circuit. By opening this up we create coolant flow to the once dead area of the block. The added benefit is reduced air/steam pockets and constant coolant bleeding to the overflow tank. Countless hours of testing and tuning went into developing this kit with the proper flow for maximum benefit, as well as to assure proper match to the front of the block. Diesel engines need to operate in a narrow band of temperature to maintain optimum efficiency. Without our kit the front of the block is over-cooled and the rear under-cooled, leading to loss of power and efficiency. Our system is hand assembled in the USA with all USA made parts. We use Aerospace certified AN fittings, high temperature/pressure stainless steel braided hose with a soft outer layer to not cut into your soft metal parts. We fabricate a custom CNC machined billet aluminium bolt on replacement for the rear coolant block off plates which includes new gaskets as well. The front crossover gets a custom CNC machined billet adapter which has an added port, should you wish to add an aftermarket gauge or possibly a coolant return for an aftermarket turbo (we have a turbo coolant feed option as well), as well as gaskets. Everything is a true bolt-on system. The complete kit is in black. Should you desire to remove the system it is fully reversible as well. All systems come with a color step by step guide for installation. Buy with confidence with a full one year warranty against manufacturer defects and workmanship.Fits all Military CUCV trucks with 6.2ltr engines (6.5 engines with all CUCV accessories will fit too).NOTE!! THIS KIT WILL NOT FIT HMMWVs, or 6.5ltr Turbo, or aftermarket turbo vehicles or any street vehicles unless they have a military CUCV engine! Please return to the PRODUCTS page and look for your correct application! We can build you a custom kit if need be.Add Ons: We can option your cooling kit with a few add ons if you desire. We can add the ability to flow coolant to an aftermarket water cooled turbocharger with our kit. Another option is to add a port for you to add an aftermarket coolant temperature gauge. Yet another option is to add an aftermarket fuel pre-heater system for cold climates or bio-diesel applications. These are all add ons we can option into our cooling upgrade kits now or in the future. Please contact us to set these up for you. >>>THE EBAY COMPATIBILITY LIST IS NOT CORRECT, THESE FIT ALL CUCV TRUCKS WITH 6.2 (6.5) ENGINE. These kits may be shipped worldwide however EBAY tags these as for USA use only. Please contact us directly for shipping outside the USA. Inventory is selling out fast and supply is limited. Photos may be of similar kits but are substantially similar<<< What our customers have to say: "The package arrived today and it was well packed and the quality was evident right away. This is no cheaply made kit from overseas and obvious care was taken to make it. The instructions were easy to follow and I had the kit installed in less than an hour! Wow is all I can say! I never expected such a quick change to make so much difference in my Humvee! All of a sudden I have a great truck to drive. The power is much higher and the fan hardly comes on at all anymore. The idle is smoother and it puts out much less smoke. The heat inside the truck is definitely lower too. Good job Paradox!" "I was very skeptical, and reading the online discussions I just could just not figure out how this worked. I figured what the heck, if it doesn't work I will send it back or cancel my charges with my card company. Well best thing I have done to my truck yet! Not only does it work as advertised but actually does far more! I cant say enough about the overall improvement in the way my truck drives now." "My M998 has been a hot runner from day one. I have replaced nearly every part in the system, sometimes more than once with no effect. Well PBD upgrade system was the magic bullet! The fan used to kick on all the time and stay on just killing the power, now it hardly comes on at all. I will be buying whatever they do next!" "I had to wait a full month for the kit as one of the first to buy it and it was worth the wait! I did some other things while in there but all in all the install was super easy and less than 2 hours. Strangely the truck warms up faster now? Once warmed up it stays constantly at 200 now where before it would spike to 240. The fan runs like 1/2 the time as before and the power is way better. It is still early to tell but my last tank lasted another 30 miles further than normal so looks like that has improved too. My 4X4 group of friends will be buying too once they are back in stock! "I was thinking snake oil, akin to the tornado or magnets for the fuel. Well not here, this is the real deal. Spoke with Derrek before buying as I did not want to waste my time and money, he convinced me. The box was small but the contents were high end and well made. Instructions clear and install easy. M998 is happy with it and now my M1038 is getting one too!
Price: 395 USD
Location: Kamas, Utah
End Time: 2025-01-10T20:22:14.000Z
Shipping Cost: 17 USD
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Item Specifics
Restocking Fee: 10%
Return shipping will be paid by: Buyer
Returns Accepted: Returns Accepted
Item must be returned within: 14 Days
Refund will be given as: Money Back
Country/Region of Manufacture: United States
Manufacturer Part Number: PC-CI62-V1
Brand: Paradox By Design
Manufacturer Warranty: 1 Year
OE Spec or Performance/Custom: Performance/Custom