Reviews for Hesco HFTH High Flow Thermostat Housing for 86-06 Jeep Vehicles with 4.0L
Works great, installed easy. I would say that the gasket that came with the thermostat housing seemed a little off. Almost like it wasn't as large as the holes on the housing. But there is a possibility I mixed it up with the one that came in the full gasket kit. I had to re-install once. I used some permatex blue and was real careful to torque to specified values in FSM and no more. It does feel like if you over torqued you could snap the bolt holes easily.
Great product, but could use a bit more refinement & finish for the price. A bit of filing & sanding to smooth out casting imperfections, as well as rounding internal flow paths makes for a leak free, smoother, higher flowing, upgrade.
Housing is pretty cool and seems to help keep temps down. Fits just like OEM, since it's a modified OEM housing. My one knock is the gasket that came with it pretty cheap. I cocked the T-Stat on first try (that's on me) and that cause a tear. With FelPro gasket from my local auto parts store it sealed up nicely.
If you are having a leak issue, use a couple washers on the bottom bolt. The bolt that was in my original neck I reused but compared housings side by side, this one is machined about 2mm skinny at the mounting point, the bottom bolt bottoms out and it caused a leak... I found the problem on the third try.
Bought about a year ago, finally got around to install. Used a fair bit of RTV and the crappy paper gasket it comes with. Seated fine. Let it cure for an hour then torque it down to 17ft lbs. Let it cure for the rest of the day l. Fire it up and there's a hairline crack above the lower bolt with a decent leak. That's what I get for following factory specs huh. Or it's just a crappy cast. $40 down the drain
Do yourself a favor and use a die grinder to remove material from your stock thermostat housing to make it "high flow". I would have given this product 0 stars but I wasn't allowed to. After 3 installs, I still could not get the high flow thermostat housing to seal properly. I ended up putting the 25 year old stock thermostat housing back on and it sealed perfectly the first time.
On a good note, I fully flushed my cooling system because of all the coolant my Jeep puked all over the place.
The meeting surface bent the first time I torqued it to 19 foot pounds. Tried to install it three times leaked every time.
Waste of $90 and two hours. This pump didn't make any measurable difference in the cooling of my Jeep. Let me be clear: there is nothing wrong with my cooling system. My Cherokee just gets too hot too easy. It will hit 200 degrees and stay there controlled by the thermostat. But give it a hill around town (not a crazy hill, either) and the temp climbs right up to the point that the EL fan kicks in. I bought the hype and tried this pump. It made absolutely NO difference. Should have spent my money on an Ohooogah horn.
The piece was not drilled internally the full correct way, as well as after install, the housing cracked near the lower bolt causing it to leak within the first few days of running. I would not recommend this product. I would go either OEM or another manufacturer