JXGZYD Engine Thermostat 52028898AE for Ram/Dodge/Chrysler/Jeep 203°F opening – Direct-fit replacement for 5.7L–6.4L V8

JXGZYD 203°F engine thermostat 52028898AE is a direct-fit replacement thermostat designed to regulate operating temperature in compatible 5.7L–6.4L V8 Dodge, Ram, Chrysler and Jeep engines.

If your vehicle is running hotter or cooler than normal, a failing thermostat can cause poor heater performance, reduced fuel economy, and erratic temperature readings. This JXGZYD thermostat is manufactured from high-grade materials, tested through production, and supplied as a one-to-one replacement for many Chrysler Group V8 engines from 2003 to 2018. It’s intended to restore correct coolant flow and maintain the designed 203°F opening point for reliable engine temperature control.

Which vehicles and engines does this thermostat fit?

This thermostat replaces part number 52028898AE and fits a wide range of Chrysler Group V8 models. Coverage spans Ram 1500/2500/3500, Dodge Charger/Challenger/Durango/Magnum, Chrysler 300 and Jeep Commander/Grand Cherokee across several model years.

• Ram 1500/2500/3500: select 2003–2018 models with 5.7L V8
• Dodge Challenger/Charger: 5.7L, 6.1L and 6.4L V8 model years listed in the compatibility notes
• Durango, Magnum, Chrysler 300, Commander, Grand Cherokee matching 5.7L–6.4L V8s
• Always verify VIN or engine code to confirm fitment before ordering

How does this thermostat affect engine performance and cooling?

A correctly functioning thermostat helps the engine reach and hold its optimal operating temperature. By opening at approximately 203°F, this unit allows proper coolant circulation through the radiator only when needed, helping reduce warm-up time and prevent overheating during high loads.

• Maintains intended engine temperature for efficient combustion
• Prevents premature overheating under heavy driving or towing
• Improves cabin heater response once engine is at operating temperature
• Works as a direct-fit replacement to match factory control characteristics

What are the build quality and warranty details?

JXGZYD parts are produced from high-grade materials and undergo repeated inspections during manufacturing. The listing highlights a multi-point test process and a manufacturer warranty intended to cover defects in materials and workmanship.

• High-grade materials and in-line quality checks during production
• Factory-tested to meet the 203°F opening specification
• JXGZYD provides a limited 1-year warranty against manufacturing defects
• 24-hour customer support and one-to-one service for fitment questions

How do I replace the thermostat and what should I prepare?

Replacing a thermostat typically requires draining part of the cooling system, removing the thermostat housing, swapping the unit and gasket, and refilling and bleeding the coolant. If you’re unsure, consult a repair manual or professional mechanic to follow torque specs and bleeding procedures for your specific model.

• Tools: basic hand tools, torque wrench, coolant catch container
• Consumables: appropriate gasket/sealant and coolant for your vehicle
• Procedure: drain, remove housing, swap thermostat, refill and bleed system
• Recommendation: verify OEM torque values and follow safety precautions

Who is this for: This JXGZYD 203°F thermostat is aimed at owners and technicians working on 5.7L–6.4L V8 Chrysler Group vehicles—Ram, Dodge, Chrysler, and Jeep models from the 2003–2018 model years—who need a direct-fit replacement to restore proper engine temperature regulation. It’s suitable for DIY installers with mechanical experience and professional shops seeking a tested aftermarket replacement with manufacturer support and warranty coverage. Before purchase, confirm compatibility using your vehicle VIN, engine displacement, and the listed model years to ensure a correct fit.