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FSD26 IS LIVE: Every $1 spent = 150 entries to win a 2024 F-350 Limited + $20,000 cash.
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Wehrli

Wehrli 99-23 GM Billet Coolant Heater Core Firewall Fitting

SKU: WCFWCF100155
$44.99

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This purchase enters you to win the FSD26 truck: a 2024 F-350 Limited + $20,000 cash. Ends October 18. See the truck

The factory plastic GM Coolant Heater Core Firewall Fitting is a common failure point on Duramax trucks and other GM vehicles. Our made in the USA, billet aluminum direct-fit replacement is more resistant to heat and vibration. Prevent leaks with this easy to install upgrade. Replaces GM/AC Delco Part Number 15032062

  • Replaces failure prone plastic factory GM Heater Core Firewall Coolant Fitting
  • Billet direct-fit replacement with 5/8" barb connection
  • Clear Anodized finished to resist corrosion
  • Replaces GM/AC Delco Part Number 15032062
  • More resistant to heat and vibration
  • Double O-ring seal

This Part Fits:

Year Make Model Submodel
2002-2005 Cadillac Escalade Base
2002-2005 Chevrolet Avalanche 1500 Base
2005 Chevrolet Avalanche 1500 LS
2005 Chevrolet Avalanche 1500 LT
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2003 Chevrolet Avalanche 1500 WBH
2004-2005 Chevrolet Avalanche 1500 Z66
2002-2005 Chevrolet Avalanche 1500 Z71
2002-2004 Chevrolet Avalanche 2500 Base
2005 Chevrolet Avalanche 2500 LS
2005 Chevrolet Avalanche 2500 LT
2007-2010 Chevrolet Express 1500 Base
2007-2010 Chevrolet Express 1500 LS
2007-2010 Chevrolet Express 1500 LT
2007-2010 Chevrolet Express 2500 Base
2007-2010 Chevrolet Express 2500 LS
2007-2010 Chevrolet Express 2500 LT
2007-2010 Chevrolet Express 3500 Base
2007-2010 Chevrolet Express 3500 LS
2007-2010 Chevrolet Express 3500 LT
1999-2005 Chevrolet Silverado 1500 Base
2004-2006,2009-2013 Chevrolet Silverado 1500 Hybrid
1999-2013 Chevrolet Silverado 1500 LS
1999-2013 Chevrolet Silverado 1500 LT
2007-2013 Chevrolet Silverado 1500 LTZ
2003-2006 Chevrolet Silverado 1500 SS
2002-2013 Chevrolet Silverado 1500 WT
2010-2013 Chevrolet Silverado 1500 XFE
2004-2005 Chevrolet Silverado 1500 Z71 Off-Road
2000-2004 Chevrolet Silverado 2500 Base
2000-2004 Chevrolet Silverado 2500 LS
2000-2004 Chevrolet Silverado 2500 LT
2004 Chevrolet Silverado 2500 WT
2001-2005 Chevrolet Silverado 2500 HD Base
2021-2023 Chevrolet Silverado 2500 HD Custom
2015-2023 Chevrolet Silverado 2500 HD High Country
2001-2006 Chevrolet Silverado 2500 HD LS
2001-2023 Chevrolet Silverado 2500 HD LT
2007-2023 Chevrolet Silverado 2500 HD LTZ
2003-2023 Chevrolet Silverado 2500 HD WT
2007 Chevrolet Silverado 2500 HD Classic LS
2007 Chevrolet Silverado 2500 HD Classic LT
2007 Chevrolet Silverado 2500 HD Classic WT
2001-2005 Chevrolet Silverado 3500 Base
2001-2006 Chevrolet Silverado 3500 LS
2001-2006 Chevrolet Silverado 3500 LT
2004,2006 Chevrolet Silverado 3500 WT
2007 Chevrolet Silverado 3500 Classic LS
2007 Chevrolet Silverado 3500 Classic LT
2007 Chevrolet Silverado 3500 Classic WT
2015-2023 Chevrolet Silverado 3500 HD High Country
2007-2023 Chevrolet Silverado 3500 HD LT
2007-2023 Chevrolet Silverado 3500 HD LTZ
2007-2023 Chevrolet Silverado 3500 HD WT
2000-2001 Chevrolet Suburban 1500 Base
2000-2005 Chevrolet Suburban 1500 LS
2000-2005 Chevrolet Suburban 1500 LT
2002-2005 Chevrolet Suburban 1500 Z71
2000-2001 Chevrolet Suburban 2500 Base
2000-2005 Chevrolet Suburban 2500 LS
2000-2005 Chevrolet Suburban 2500 LT
2000-2001 Chevrolet Tahoe Base
2000 Chevrolet Tahoe Limited
2000-2004 Chevrolet Tahoe LS
2000-2004 Chevrolet Tahoe LT
2000,2002-2004 Chevrolet Tahoe Z71
2007-2010 GMC Savana 1500 Base
2007-2010 GMC Savana 1500 LS
2007-2010 GMC Savana 1500 LT
2007-2010 GMC Savana 2500 Base
2007-2010 GMC Savana 2500 LS
2007-2010 GMC Savana 2500 LT
2007-2010 GMC Savana 3500 Base
2007-2010 GMC Savana 3500 LS
2007-2010 GMC Savana 3500 LT
2002-2005 GMC Sierra 1500 Base
2001 GMC Sierra 1500 C3
2002-2013 GMC Sierra 1500 Denali
2002 GMC Sierra 1500 HT
2005-2006,2009-2013 GMC Sierra 1500 Hybrid
1999-2003,2006-2013 GMC Sierra 1500 SL
1999-2013 GMC Sierra 1500 SLE
1999-2013 GMC Sierra 1500 SLT
2002-2013 GMC Sierra 1500 WT
2010-2013 GMC Sierra 1500 XFE
2020-2023 GMC Sierra 2500 HD AT4
2002-2005,2015-2021 GMC Sierra 2500 HD Base
2011-2023 GMC Sierra 2500 HD Denali
2022-2023 GMC Sierra 2500 HD Pro
2001-2002,2006 GMC Sierra 2500 HD SL
2001-2023 GMC Sierra 2500 HD SLE
2001-2023 GMC Sierra 2500 HD SLT
2003-2014 GMC Sierra 2500 HD WT
2007 GMC Sierra 2500 HD Classic SL
2007 GMC Sierra 2500 HD Classic SLE
2007 GMC Sierra 2500 HD Classic SLT
2007 GMC Sierra 2500 HD Classic WT
2002-2005 GMC Sierra 3500 Base
2001-2002,2006 GMC Sierra 3500 SL
2001-2006 GMC Sierra 3500 SLE
2001-2006 GMC Sierra 3500 SLT
2004-2006 GMC Sierra 3500 WT
2007 GMC Sierra 3500 Classic SL
2007 GMC Sierra 3500 Classic SLE
2007 GMC Sierra 3500 Classic SLT
2007 GMC Sierra 3500 Classic WT
2020-2023 GMC Sierra 3500 HD AT4
2015-2021 GMC Sierra 3500 HD Base
2011-2023 GMC Sierra 3500 HD Denali
2022-2023 GMC Sierra 3500 HD Pro
2007-2023 GMC Sierra 3500 HD SLE
2007-2023 GMC Sierra 3500 HD SLT
2007-2014 GMC Sierra 3500 HD WT
2000-2005 GMC Yukon Denali
2000-2005 GMC Yukon SLE
2000-2005 GMC Yukon SLT
2003-2009 Hummer H2 Base

Customer Reviews

Overall rating: 4.7 / 5 from 530 reviews.

Customer photo review of FSD 03-09 Dodge Cummins Billet Heat Exchanger

The billet heat exchanger looks great and is machined nicely. No worries about an internal failure allowing fluids to mix. It seems to be doing its job. It's more robust than the factory style cooler but I don’t believe it is quite as efficient based on warm up times I’m seeing. My only gripe is the bracket mounting bolts, they thread directly onto the cooler instead of passing all the way through and securing with nuts. Make sure to use thread locker along with the lock washers. As a rough guide, torque for M8 fasteners in aluminum should be 11-15 ft lbs, no torque spec is listed for the mounting hardware in the instructions.

Charles H. 4/5 Verified

FSD 03-09 Dodge Cummins Billet Heat Exchanger

Customer photo review of FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

It’s not bad, I was in a bind and needed a quick fix to get my truck back going. So first things first, the kit works. You can get rid of the steel lines and these will take their place. With about an hour and a half and a little research it doesn’t take much to get these hoses installed. However, I have some gripes about this kit. 1. You have to be very careful about how the lines are run to prevent the hose from kinking. 2. There are no p clamps or hardware included to hold the lines in place. To improve this kit, I’d toss some hose clamps, a couple bolts with some p clamps to hold the hose, maybe a couple pictures on where to run things too, or even total install instructions. Stiffer hose would be good too, in my pictures you can see that the hose going to the front of the engine is trying to kink as it makes the bend to run beside the turbo.

Noah T. 3/5 Verified

FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

Customer photo review of Kingspeed Billet Front Cover 94-02

It came with no gaskets this item deff needs to be sold with cover gasket as well as the seal for the crank even a plug for the vent or a fitting to hook a tube to the vent. Didn’t come with shit but bolts. Now I got to track everything else down seperatly makes it a pain in the ass. At this point I’d rather have stayed stock

Jacob M. 3/5 Verified

Kingspeed Billet Front Cover 94-02

Customer photo review of FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

I installed them when I built my transmission. Hoses are good quality but fittings felt kind of cheap. Not a bad kit at all. I’d recommend it to anyone. Substantial trans temp difference after putting them on. My trans runs a lot cooler now that I’ve bypassed the heat exchanger. 2012 ram 2500 with 68rfe. 9/10 would recommend. Just be gentle with the fittings

Max F. 4/5 Verified

FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

Customer photo review of FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

I installed this cooler and a few weeks later got into a wreck that was able to damn near total my truck, the frame is bent in 4 places and it shifted my ranch and bumper a foot. This cooler was the only radiator that survived everything else was destroyed and wrapped around the cooler. I called customer support and was able to order new stainless steel brackets and this cooler will live again. I’m very impressed with the quality and strength of this part and would gladly buy it for another truck.

Fritz G. 5/5

FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

Customer photo review of Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

I love the product. I am just upset that it wasn’t clear it doesn’t come with any hardware. I currently have no clue what barb fittings and hose sizes I need to get for the valve cover to my catch can. I am currently using a hardware store setup as this is my first Cummins and my first quality build of a truck. If there’s anyway you could assist me or point me in the right direction that would be awesome. Aside from that I’ve had nothing but compliments on it, I actually won top 10 truck and SCT x GFP in Nashville a few weeks back. Everyone including myself love the valve cover.

Caleb H. 3/5 Verified

Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

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