Review on Zerostart 3100072 Freeze Diameter Approved by James Weber

Works perfectly as expected. Installation on my 04 Wrangler TJ was a bit tricky as the #1 freeze plug is blocked by the HP pump and A/C compressor. I was able to remove the HP pump, remove the A/C rear bracket and install the heater, leaving the compressor in place. It took about 3 hours from start to finish. As for the reviewer who said it was leaking because of the screw, it was because he overtightened it. Tip: Apply plumbing silicone grease to the block and o-ring to help install the heater. I used a 30" screwdriver to press it in place and then held it while I tightened the screw with my other hand. A few scratched joints, but easier than removing the compressor. I connect the heater to a timer to heat it up. at 4am to keep me warm when I go to work.