Engine Thermostat 52028898AE,203℉ For 2003-2018 Ram 1500

The RICHWEI 203℉ engine thermostat (replacement 52028898AE) is a direct-fit cooling thermostat engineered to restore correct engine warm-up and maintain stable operating temperature for select Chrysler, Dodge, Jeep and Ram V8 vehicles.

Designed as a like-for-like replacement for the factory 203℉ unit, this thermostat is manufactured from high-grade materials and tested for consistent opening temperature. It fits a wide range of V8 engines — including 5.7L, 6.1L, 6.2L and 6.4L applications — across Ram, Dodge, Jeep and Chrysler models from the early 2000s through 2018. Before ordering, verify year, make, model and engine to ensure compatibility and avoid installation delays.

Will this thermostat fit my Ram, Dodge, Jeep or Chrysler?

If your vehicle is listed among the compatible models with the specified V8 engine sizes, this thermostat is intended to be a direct replacement. Compatibility spans many model years, particularly for 5.7L HEMI engines and the larger 6.1–6.4L V8 variants. Always cross-check part numbers and trim levels for certainty.

• Replacement part number: 52028898AE, 203℉ opening temperature.
• Common fitments: Ram 1500/2500/3500 (select years) and Dodge Challenger/Charger across 5.7–6.4L engines.
• Also fits Jeep Commander/Grand Cherokee and Chrysler 300/Aspen V8 models listed in the compatibility table.
• Use a vehicle lookup (year/make/model/engine) before purchase to confirm fit.

How does this thermostat affect engine performance and cooling?

The thermostat controls coolant flow to maintain the engine’s designed operating temperature. A correctly functioning 203℉ thermostat helps the engine reach optimum temperature quickly and prevents overcooling or overheating under common driving conditions. This can improve cabin heat delivery and stabilize engine management behavior.

• Opens at about 203℉ to allow coolant circulation through the radiator.
• Helps the engine warm up efficiently for better fuel and emissions control.
• Prevents prolonged overcooling that can reduce heater performance.
• Reduces risk of overheating from a stuck-closed thermostat.

What should I expect when installing this replacement part?

Installation procedures are typical for thermostat replacement: drain coolant, remove the housing, swap the thermostat and gasket, then refill and burp the system. The RICHWEI thermostat is made to match OEM dimensions, helping the part sit correctly in the housing and seal properly. If you’re not comfortable with coolant system work, a professional installer is recommended.

• Comes with one 203℉ thermostat; gasket and additional hardware not always included — check your kit.
• Requires coolant drain and proper bleeding after installation.
• Inspect housing and hoses for wear while replacing the thermostat.
• Follow torque specs for housing bolts to avoid leaks.

How durable and reliable is the RICHWEI thermostat?

RICHWEI uses high-grade materials and subjects each unit to production checks and testing to ensure consistent opening temperature and long service life. The product is backed by a 30-day satisfaction return policy that allows a refund if the part does not meet your expectations. Routine inspections of the cooling system will help maximize the thermostat’s service life.

• Constructed from corrosion-resistant materials for durability.
• Quality-tested during manufacturing for accurate actuation temperature.
• 30-day returns available if you’re not satisfied with the purchase.
• Recommended to replace thermostat with coolant service for best results.

Who is this for: drivers and mechanics who own or service Chrysler, Dodge, Jeep or Ram vehicles equipped with 5.7L–6.4L V8 engines and need a reliable, OEM-style 203℉ thermostat replacement. This part suits owners restoring heater performance, correcting temperature control issues, or performing scheduled cooling-system maintenance. Confirm vehicle fitment before ordering to ensure a correct swap.