A-Premium Thermostat Housing Assembly for Jeep Wrangler JK 2007–2011 V6 3.8L — Direct-Fit Plastic

A-Premium's thermostat housing assembly is a direct-fit replacement for Jeep Wrangler JK 2007–2011 V6 3.8L engines, designed to regulate coolant flow and maintain stable engine temperature.

This replacement housing is molded from durable automotive-grade plastic and engineered to match OE mounting points and outlet dimensions for an accurate fit on compatible Jeep Wrangler JK models. It replaces several reference numbers (CH5357, 902-3038, CO34826, 85357, 4666149AA) so you can cross-check part lists. Tested for hardness and crush resistance, the unit helps the cooling system operate within the intended temperature range when installed with the correct thermostat and hoses.

Will this thermostat housing fit my Jeep Wrangler JK 2007–2011 V6 3.8L?

Yes — it’s built to the fitment specifications for the Jeep Wrangler JK with the V6 3.8L engine produced between 2007 and 2011. Confirm fit by matching one of the listed reference numbers or by checking the mounting pattern and outlet diameter against your original part.

• Vehicle fitment: Jeep Wrangler JK 2007–2011 V6 3.8L
• Reference numbers: CH5357, 902-3038, CO34826, 85357, 4666149AA
• Bolt hole center distance: 2.35 in.
• Bolt hole quantity: 2 with 0.29 in. mounting hole diameter

What are the key dimensions and material details I need to know?

The housing is manufactured from robust plastic to resist corrosion and is dimensioned to align with factory hoses and mounting points. Knowing these measurements helps verify compatibility before purchase and ensures a smooth installation.

• Inside diameter: 1.66 in.; outlet inside diameter: 1.29 in.; outlet outside diameter: 1.49 in.
• Outlet tube length: 2.57 in.; maximum height: 3.31 in.
• Type: regular housing with single outlet tube
• Material: durable automotive-grade plastic, gasket not included

How difficult is installation and what should I prepare?

Installation is straightforward for anyone comfortable with basic engine work: drain coolant, remove the old housing, transfer thermostat if needed, clean the mounting surface, and install the new housing with a proper seal. Because mounting hardware and gasket/seal are not included, have fresh gaskets and correct fasteners on hand to guarantee a leak-free fit.

• Mounting hardware: not included — reuse factory bolts or obtain OEM-style replacements
• Gasket/seal: not included — replace the gasket to prevent leaks
• Tools needed: socket set, torque wrench, coolant drain pan, gasket scraper, coolant refill
• Typical tasks: transfer thermostat if reusing, inspect hoses and clamps, refill and bleed cooling system

What durability and warranty support does A-Premium provide?

A-Premium subjects parts to hardness and crush tests during production to ensure dependable structural performance under normal operating conditions. The assembly carries a one-year unlimited-mileage guarantee to protect against manufacturing defects, giving extra confidence after installation.

• Quality checks: hardness and crush resistance testing
• Warranty: one-year unlimited-mileage guarantee from A-Premium
• Performance goal: maintain proper heat dissipation to help engine run in intended temperature range

Who is this for: This thermostat housing assembly is aimed at Jeep Wrangler owners, DIY mechanics, and independent repair shops needing a direct-fit replacement for the 2007–2011 V6 3.8L models. Choose this part when you want a cost-effective, tested housing that matches OE mounting geometry — just be sure to install a new gasket and suitable mounting hardware for a reliable, leak-free repair.