Click to zoom in
Eliminate Coolant Leaks Before They Start with a Billet Thermostat Housing
The Billet Technology 300722 Billet Aluminum Thermostat Housing replaces the factory OEM thermostat housing with a precision CNC-machined billet aluminum housing on your 2018-2021 Jeep Grand Cherokee Trackhawk. The factory thermostat housing on these high-output 6.2L Hellcat supercharged HEMI (Grand Cherokee Trackhawk) engines is a known weak point that warps and develops coolant seepage under the repeated thermal cycling of hard driving. The 300722 is CNC machined in Lake Worth, Florida from solid 6061-T6 certified domestic aircraft-grade aluminum, delivering a permanent solution that also adds a premium machined appearance to the engine bay. Direct bolt-in fit, OEM gasket compatible, no modifications required.
Key Features
- Precision CNC machined from solid 6061-T6 certified domestic aircraft-grade aluminum
- Engineered as a direct replacement for the factory thermostat housing on the 6.2L Hellcat supercharged HEMI (Grand Cherokee Trackhawk)
- Eliminates the OEM plastic or cast iron thermostat housing that is prone to warping, cracking, and coolant seepage under high operating temperatures
- Machined coolant passage geometry matches OEM flow characteristics
- Available in satin and color anodized finish options
- Billet Technology 300722 is backed by a limited lifetime warranty against defects in materials and workmanship
- Made in the USA
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2018-2021 | Jeep | Grand Cherokee | Trackhawk |
Specifications
| Detail | Value |
|---|---|
| Part Number | 300722 |
| Brand | Billet Technology |
| Material | Solid 6061-T6 Aircraft-Grade Aluminum |
| Finish | Satin (Raw Machined Aluminum) |
| Product Type | Thermostat Housing |
| Engine Compatibility | 6.2L Hellcat supercharged HEMI (Grand Cherokee Trackhawk) |
| Country of Origin | USA |
| Warranty | Limited Lifetime Warranty Against Defects In Materials And Workmanship |
What Is Included
- 1x Billet Technology 300722 Billet Aluminum Thermostat Housing
- Gasket set (verify on product page , select versions include gasket)
- Installation hardware
Frequently Asked Questions
Does the Billet Technology 300722 thermostat housing require a new thermostat?The 300722 accepts the OEM thermostat. You can reuse your existing thermostat or install a new OEM-spec thermostat at the time of installation. Refer to the factory service manual for the correct thermostat specification.
Does the billet thermostat housing use OEM gaskets?Yes. The this product is machined to accept OEM gaskets or an OEM-equivalent gasket set. Use a fresh gasket at installation. Some kits include a gasket , refer to the What Is Included section.
Will the billet thermostat housing improve cooling performance?The this product is a direct replacement with matched coolant passage geometry. While it does not alter thermostat opening temperature, eliminating the factory housing material's tendency to warp ensures consistent thermostat seating and coolant flow.
Is the this product compatible with OEM and aftermarket coolants?6061-T6 aluminum is compatible with standard ethylene glycol and OAT-based coolants. Do not mix coolant types. Flush the system if switching coolant formulas.
Does this thermostat housing fit both the Charger and Challenger?Both vehicles share the same engine family. Refer to the fitment table for exact year and model compatibility.
What torque specification should I use for the thermostat housing bolts?Torque fasteners to the OEM specification listed in the factory service manual for the 6.2L Hellcat supercharged HEMI (Grand Cherokee Trackhawk). Over-torquing can crack the housing flange.
Is the Billet Technology thermostat housing made in the USA?Yes. The this product is CNC machined in Lake Worth, Florida from certified domestic 6061-T6 aluminum.
Do I need to bleed the cooling system after replacing the thermostat housing?Yes. Any time the cooling system is opened, air pockets can form. Fill the system, run the engine to operating temperature, check for leaks, and top off the coolant level after the thermostat opens.
Installation Instructions
- Allow the engine to cool completely. Never work on a hot cooling system.
- Place a drain pan under the vehicle and drain the coolant by loosening the lower radiator hose or drain petcock.
- Disconnect the radiator hose, heater hose, and any other coolant lines attached to the factory housing.
- Remove the OEM fasteners securing the factory thermostat housing.
- Remove the factory housing and thermostat. Clean the mating surface thoroughly.
- Install a fresh gasket on the Billet Technology this product billet housing.
- If reusing the OEM thermostat, verify it is in good condition. Install the thermostat into the billet housing.
- Mount the 300722 to the engine block mating surface and torque fasteners to OEM specification.
- Reconnect all coolant hoses and secure with OEM-style clamps.
- Fill the cooling system with the correct coolant type and bleed all air from the circuit.
- Start the engine, bring to operating temperature, and check for leaks.
- Top off coolant level after the thermostat opens and recheck after first heat cycle.
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
Billet Technology
Billet Technology produces precision CNC-machined billet aluminum accessories for performance vehicles. Their products include oil catch cans, filler caps, dipstick handles, and cooling system components machined from 6061 aluminum for a clean, professional engine bay appearance. Popular Billet Technology ProductsBrowse the full Billet Technology catalog to find the right upgrade for your application. Every product ships fast with fitment verified against manufacturer specifications. What are Billet Technology's most popular products?Billet Technology's top sellers include their oil catch cans, billet coolant reservoir caps, dipstick handles, and radiator caps, all CNC-machined from billet aluminum and available in anodized finishes. Are Billet Technology products vehicle-specific?Yes, Billet Technology makes direct-fit products designed for specific vehicles and engine bays, ensuring proper fitment without modification for supported applications. Explore related categories: Exhaust...
View Billet Technology Products
Cooling
Shop performance cooling parts at Black Ops Auto Works for premium radiators, thermostat housings, thermostats, coolant reservoirs, expansion tanks, radiator hoses, oil coolers, transmission coolers, fans and shrouds, water pumps, and thermal management upgrades for street, track, towing, diesel, and high-horsepower builds. Whether you are trying to control engine temps, improve reliability, or support demanding performance use, this collection is built around proven cooling-system upgrades for serious enthusiasts. Shop Cooling Parts by Category Browse automotive cooling system components across key product categories, including: Radiators Coolant reservoirs and expansion tanks Thermostat housings and thermostats Radiator hose kits and silicone coolant hoses Oil coolers and oil cooler accessories Transmission coolers Coolant bypass kits and coolant filters Fans and shrouds Radiator caps Water pumps Radiator shrouds, radiator stays, and cooling plates Thermal wrap, thermal tape, an...
View Cooling Products
Engine
This engine parts collection covers oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, and engine bay dress-up parts for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. The collection is particularly strong for Dodge Challenger, Charger, Durango, Jeep Grand Cherokee Trackhawk, and Ram TRX platforms running 6.2L Hellcat, 6.4L HEMI, and 5.7L HEMI engines, where oil catch can and cooling upgrades address known OEM weaknesses in the PCV and thermal management systems. Import performance platforms including GM LS-based builds, Chevrolet Camaro, and Corvette applications are also represented through Mishimoto, CSF, and ZPE GripTec product lines. Builders who invest in engine bay organization and reliab...
View Engine Products
Jeep Grand Cherokee Parts and Accessories
Shop Performance Upgrades and All Your Accessories Browse premium Jeep Grand Cherokee parts and accessories at Black Ops Auto Works, including suspension upgrades, cold air intakes, exhaust systems, carbon fiber hoods, spoilers, brake lines, brake pads, catch cans, engine bay accessories, and exterior styling parts for WK, WK2, Grand Cherokee L, SRT, and Trackhawk applications. Whether you are upgrading a daily-driven Grand Cherokee, building a Jeep Grand Cherokee SRT, or modifying a Trackhawk, this collection is built for customers searching for Jeep Grand Cherokee performance parts, Jeep Grand Cherokee aftermarket accessories, and Grand Cherokee carbon fiber and suspension upgrades. Jeep Grand Cherokee Performance Parts from Top Brands Shop trusted brands in the Jeep Grand Cherokee category, including: Billet Technology Legmaker Performance Silver’s NEOMAX Swift Springs Eibach Black Ops Auto Works Exotic Innovations aFe Power JLT Mishimoto Rotora These brands are known for Jee...
View Jeep Grand Cherokee Parts and Accessories Products
Jeep Grand Cherokee Trackhawk Parts and Accessories
Shop 2018-2021 Jeep Grand Cherokee Trackhawk parts and accessories at Black Ops Auto Works for 6.2L supercharged HEMI upgrades, cold air intakes, cat-back exhaust systems, headers, mid pipes, brake pads, brake rotors, brake lines, suspension parts, control arms, cooling upgrades, catch cans, carbon fiber hoods, engine bay accessories, drivetrain parts, axles, driveshafts, badges and Trackhawk exterior styling upgrades. This collection is built for WK2 Jeep Grand Cherokee Trackhawk owners who want more power, stronger airflow, better braking, improved cooling, stronger traction, cleaner engine bay styling and a more aggressive carbon fiber appearance. Use this page to shop Trackhawk parts by upgrade goal, product category, brand and build type. Shop Jeep Grand Cherokee Trackhawk Parts by Category Find vehicle-specific Jeep Trackhawk upgrades across major performance and styling categories. Shop related Black Ops Auto Works collections for Jeep Grand Cherokee parts and accessories, a...
View Jeep Grand Cherokee Trackhawk Parts and Accessories Products
Thermostat Housings
Welcome to our exclusive Thermostat Housings collection! Here, you'll find a wide range of products designed to keep your thermostat protected and functioning optimally. Why Choose Our Thermostat Housings? Durability: Crafted from high-quality materials to withstand various environmental conditions. Compatibility: Designed to fit most standard thermostat models. Easy Installation: User-friendly designs that allow for quick and hassle-free setup. Stylish Options: Available in various styles and colors to complement your home decor. Shop Our Top Picks Browse through our top-rated thermostat housings: Premium Thermostat Housing Eco-Friendly Thermostat Housing Smart Thermostat Housing Designer Thermostat Housing Get Started Today! Upgrade your heating and cooling system with our Thermostat Housings. Shop now and experience quality and efficiency like never before!
View Thermostat Housings ProductsLet customers speak for us
Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
Randy H.
Black Ops Auto Works
I emailed customer service to inquire about when it would be shipped
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Ralph J.
Black Ops Auto Works
Installation was easy
Installation was easy. The price is good and it looks great on the truck.
Ralph J.
RHO Small Grille Badge
Looks as good as it fits
Looks as good as it fits,
zachary d.
Seibon 70-73 Datsun 240Z OE Carbon Fiber Hood
Nothing like it
I love it great sound and response
Luis P.
Legmaker Dodge Durango HEMI Short Ram CAI 2011-Present 5.7L
Car totally diferent with the whole kit
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Ding D.
2015-2023 Dodge Charger Carbon Fiber Wind Splitters
Fantastic emblem! Exactly what I was looking for
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Jacobus S.
Direct Connection Black Metallic Fender Badge
Worked great for my aftermarket hood on my Chrysler 2023 300C
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Robert G.
Windshield Washer Squirter Relocation Kit Universal
Easy to install and makes car sound even better
Easy to install and makes car sound even better love the winn
Tracy H.
Legmaker Challenger/Charger Hellcat Demon & Redeye Air Intake
Awesome customer support
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
Anonymous
Swift Spec-R Lowering springs Jeep Grand Cherokee 2011-2021
100/100! perfect CF crafted cold air intake for 6
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
srt.boizzz
Legmaker 392 TH Short Ram Jeep Grand Cherokee SRT 2012-2021
