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07-11 Jeep Wrangler JK 3.8L V6 HPS Silicone Radiator Hose DIY Installation Guide


Vehicle Application: 2007-2011 Jeep Wrangler 3.8L V6 JK
Product Type: HPS Performance Silicone Radiator Hose Kit
HPS Part Numbers:
57-1220R-BLK (Black)
57-1220R-BLUE (Blue)
57-1220R-RED (Red)

Tips: The installation for the Wrangler was pretty easy, and took about an hour to finish.

Estimated install time: 1 hour

Tools needed:
- Needle-nosed pliers
- Flat-blade screwdriver
- Drain pan
- Funnel

Always remember to take precautions and use safety glasses and gloves when working on your car.



Since the Wrangler is high enough, we didn't need to use any jack stands. We removed the airbox to get to the lower radiator hose easier. To remove it, loosen the clamps on the intake hose and disconnect the air temperature sensor. There are no bolts securing the box, so it will just pop off.



Once the airbox is out of the way, you can see the lower radiator hose and the clamps securing it. Instead of draining the coolant from the drain plug, we just removed the lower hose and drained the coolant. The hose can be removed by pinching the clamps with pliers, and sliding the hose off.



The upper hose can be removed the same way as the lower hose.



Here is the upper hose at the radiator end.



Install the new HPS Silicone Radiator Hose with the included Stainless Steel clamps, which can be torqued to 35 in.lb.



Once the upper hose was installed, we installed the lower radiator hose along with the Stainless Steel clamps.



Make sure the hoses and clamps are secured and tightened.



Once everything is secured, begin refilling the coolant, and check for any leaks. We used a coolant bleeding funnel to help remove any air from the system. Once the coolant has been refilled, start the engine and turn on the heater to max heat with the fan on low (to open the thermostat). Once the Wrangler has reached it's operating temperature, turn it off, and let it cool down completely. Top off the coolant if needed. Once everything looks good, replace the radiator cap, re-install the airbox and drive the Jeep around. Once the Jeep cools down again, re-check the coolant level, and add any if necessary.



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