Finally got around to installing my HDs001 thermostat,man this th8ng heats up fast and the heater has never been hotter . Pricey but a solid piece that I can easily transfer to my next CRD if I ever total this one .Usually when I plug my Liberty in it has Luke warm heater air at first start up and takes a while to get “kinda” hot.I can start it up now after a cool night (sub 40 degree) and it’s hotter within 3-4 minutes than it was after being plugged in all night ,even hotter faster when it’s been plugged in. Temps go midway on the gauge quick as well, never saw these temps even in the summer with old thermostat.

Enjoy. I also noticed the change immediately.

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2006 Limited since factory new
HDS 001 with 203° Stant
MBRP Cat Back - Stainless
Fumoto F102
ARB bumper
Bilsteins
Michelin Defender LTX 235/70/R16

Just put my order in with Jeff a couple days ago, looking forward to getting and and having a little better heat.

r

Nice, isn't it?

One suggestion: use the 203°F thermostat in Winter, and swap out to the 190°F unit when temperatures start going back up. It's just enough of a difference that there's a noticeable improvement in A/C performance when it's warm out.

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2005 KJ CRD Limited 4x4:
245/75R16 BFG TA KO2s
OME / Clevis 2.5" Lift
JBA Lifted A-Arms
IRO WJ Short Rear UCA/WWDiesel mount
Skid Row Skidplates
HDS Model 001 Thermostat (190°F)
Suncoast TC
Full Weeks Kit
Bosch 5V glow plugs
Hayden 2986 fan clutch / GM 11-blade fan
Samco / Sasquatch Intake Hoses
Carter in-tank pump
Provent 200
V6 Airbox

Very nice,warms up so fast and I swear it runs smoother

I get this response from a LOT of Model 001 owners.

The CRD engine is in it's happy zone; running at an operating temperature range that it was designed to run at.

The engine oil is not quite as viscous.

The parts of the engine are all properly warmed up and fully expanded to their proper operating dimensions.

The engine is combusting the fuel more completely, giving better power and fuel economy. Even with an aftermarket engine tune; unless your engine is operating at a proper temperature, you are not getting the full power and economy the engine is capable of delivering.

ENJOY!

The HDS001 is one of the "must" mod for the CRD !!!

I like the 190F valve, work good for me !!

I think so myself,now that I own one .Almost too pretty to install,rarely do you see anyth8ng made by one person with so much attention to detail and flawless. You can tell Jeffrey actually cares about what he does ,not just throwing so something together and tossing it in a box