Allmotorparts Thermostat Housing Assembly for Dodge Jeep Ram 3.7/4.7L — Direct-Fit, Leak-Repair Replacement

Allmotorparts thermostat housing assembly replaces the OEM unit on many 3.7L and 4.7L Dodge, Jeep, Ram, Chrysler and Mitsubishi engines to restore coolant flow and stop leaks.

This aftermarket thermostat housing is a direct-fit replacement designed to match the original fit, form and function for a broad range of 3.7L and 4.7L Chrysler-family engines. Built from durable materials and shipped brand-new, the assembly is intended to replace failed or leaking housings that cause coolant loss, temperature warnings, or diagnostic trouble codes such as P0125 and P0128. Before ordering, verify your vehicle model and year against the compatibility list to ensure proper fitment.

How will this housing help fix cooling system problems?

When the thermostat housing is cracked, warped, or leaking, coolant can escape or the thermostat may not operate properly, creating overheating or under-temperature conditions. Replacing the housing restores a sealed coolant path and gives the thermostat a secure mounting point to operate as intended.

• Stops external coolant leaks by replacing cracked or corroded housings.
• Provides correct mounting and seal for the thermostat to regulate engine temperature.
• Prevents temperature-related warning lights and codes tied to thermostat faults.

Which vehicles and part numbers does this assembly fit?

This Allmotorparts assembly covers many Dodge, Jeep, Ram, Chrysler and Mitsubishi models equipped with 3.7L or 4.7L engines from roughly 1999–2013. It replaces several common OEM part numbers and is intended as an aftermarket substitute.

• Replaces OEM/stock numbers: 902-3312, 5589KT, 53020887AC, 420-195.
• Compatible models include Dakota, Durango, Nitro, Ram 1500, Grand Cherokee, Liberty, Commander, Aspen and Raider — check years in listing.
• Not a genuine OEM part; this is a high-quality aftermarket Allmotorparts replacement.

What should I expect during installation and maintenance?

Installation is straightforward for anyone comfortable with basic engine work: drain coolant, remove hoses and fasteners, swap the old housing for the new assembly, and refill with the correct coolant. Use a new gasket or seal if required and torque fasteners to manufacturer specs to avoid leaks.

• Ready to install out of the box; includes housing assembly only (gaskets may not be included).
• Requires coolant drain and refill; inspect hoses and thermostat while replacing the housing.
• Follow vehicle torque specs and bleed the cooling system to eliminate air pockets.

How durable and reliable is this aftermarket assembly?

Allmotorparts manufactures this unit to match original equipment geometry and operating characteristics, using materials intended to resist typical engine heat and coolant exposure. While aftermarket parts vary, this assembly is produced to provide a long service life when installed and maintained properly.

• Constructed to meet OE-style dimensions for correct fit and alignment.
• Engineered to withstand normal thermal cycles and coolant chemistry.
• Brand-new component—inspect on arrival and confirm compatibility before installation.

Who is this for: This thermostat housing assembly is tailored for DIY mechanics, independent shops, and fleet technicians maintaining Dodge, Jeep, Ram, Chrysler or Mitsubishi trucks and SUVs with 3.7L or 4.7L engines in the model years listed. Choose this part if your vehicle displays coolant leaks at the housing, thermostat-related fault codes, or temperature irregularities and you want a direct-fit aftermarket replacement. Always verify your vehicle year, make, model and engine against the compatibility section to ensure a proper match before purchase.