Nationwide product support SUMMER20Summer Sale deals live now Free U.S. shipping over $99

Fast USA delivery FREEFree shipping on qualifying orders Tracked delivery

Real specialist support FSPPerformance parts from trusted brands Genuine parts only

Summer sale live nowSALE Grab ongoing Summer Sale deals Limited time only

Delivery & returns

Free USA shipping on qualifying ordersMon–Fri, 9:00 AM–5:30 PM ET

FULL SEND PARTSPerformance without compromise

Wishlist0

American performance collection

Thermostat Housings.

Refine your build

Fitment status

Verified vehicle fitment

Universal fit

Fitment review required

Fitment not verified

Supplier availability

In stock

Available from supplier

Department

Product attributes

Special order

Clearance

CARB status

Not CARB approved

Acknowledgement required

No CARB restriction indicated

Product type

Brand

Sort by

Clear

Sale

Wehrli

Wehrli L5P Duramax Thermostat Housing - Bengal Silver

$179.45 $185.00

Sale

Wehrli

Wehrli L5P Duramax Thermostat Housing - Brizzle Blue

$179.45 $185.00

Sale

Wehrli

Wehrli L5P Duramax Thermostat Housing - Bengal Red

$179.45 $185.00

Sale

Wehrli

Wehrli L5P Duramax Thermostat Housing - Bengal Grey

$179.45 $185.00

Sale

Wehrli

Wehrli L5P Duramax Thermostat Housing - Bronze Chrome

$198.85 $205.00

Sale

Wehrli

Wehrli L5P Duramax Thermostat Housing - Bengal Blue

$179.45 $185.00

Sale

Wehrli

Wehrli WCFab X Fleece 98-18 Cummins Thermostat Housing - WCFab Red

$198.85 $205.00

Sale

Wehrli

Wehrli WCFab X Fleece 98-18 Cummins Thermostat Housing - Gloss White

$179.45 $185.00

Sale

Wehrli

Wehrli WCFab X Fleece 98-18 Cummins Thermostat Housing - Candy Red

$198.85 $205.00

Sale

Wehrli

Wehrli WCFab X Fleece 98-18 Cummins Thermostat Housing - Bengal Red

$179.45 $185.00

Sale

Wehrli

Wehrli 98-18 Dodge / Ram Cummins 5.9L/6.7L WCFab X Fleece Thermostat Housing - Candy Teal

$198.85 $205.00

Sale

Wehrli

Wehrli 06-10 Duramax LBZ/LMM Thermostat Housing Kit - Bengal Red

$474.33 $489.00

Sale

Wehrli

Wehrli 01-05 Duramax LB7/LLY Thermostat Housing Kit - Gloss White

$474.33 $489.00

Sale

Wehrli

Wehrli 01-05 Duramax LB7/LLY Thermostat Housing Kit - Candy Teal

$522.83 $539.00

Sale

Wehrli

Wehrli 01-05 Duramax LB7/LLY Thermostat Housing Kit - Candy Red

$522.83 $539.00

Sale

Wehrli

Wehrli 01-05 Duramax LB7/LLY Thermostat Housing Kit - Bronze Chrome

$522.83 $539.00

Sale

Wehrli

Wehrli 01-05 Duramax LB7/LLY Thermostat Housing Kit - WCFab Red

$522.83 $539.00

Sale

Wehrli

Wehrli x Fleece 98-18 Cummins 6.7L Thermostat Housing - Brizzle Blue

$179.45 $185.00

Sale

Wehrli

Wehrli 98-18 Dodge / Ram Cummins 5.9L/6.7L WCFab X Fleece Thermostat Housing - Illusion Purple

$198.85 $205.00

Sale

Wehrli

Wehrli Ram 19-23 Cummins 6.7L WCFab X Fleece Thermostat Housing - WCFab Grey

$198.85 $205.00

Sale

Wehrli

Wehrli Ram 19-23 Cummins 6.7L WCFab X Fleece Thermostat Housing - Gloss Black

$179.45 $185.00

Sale

Wehrli

Wehrli Ram 19-23 Cummins 6.7L WCFab X Fleece Thermostat Housing - Flat Black

$179.45 $185.00

Sale

Wehrli

Wehrli Ram 19-23 Cummins 6.7L WCFab X Fleece Thermostat Housing - Bronze Chrome

$198.85 $205.00

Sale

Wehrli

Wehrli Ram 19-23 Cummins 6.7L WCFab X Fleece Thermostat Housing - Bengal Blue

$179.45 $185.00