Used Genuine OEM Engine Thermostat for Jeep Grand Cherokee 2021–2026

Engine Thermostat & Housing Assembly - Jeep Grand Cherokee Genuine OEM Used (Part Number: 68433104AC)

Genuine factory OEM used complete engine thermostat and housing assembly (integrated thermostat valve, water outlet neck, and housing) in excellent and very clean condition. Compatible with the new generation Jeep Grand Cherokee (WL) models—including both the standard 2-row and the 3-row L variants—it precisely regulates coolant (antifreeze) flow between the engine block and the radiator to maintain optimal engine operating temperatures in accordance with the highest factory performance standards.

Technical Specifications

Technical Note: The engine thermostat acts as the primary thermal safety valve for the powertrain. A thermostat failure typically occurs in one of two ways: failing "stuck closed," which is highly dangerous as it restricts coolant flow and causes immediate, catastrophic engine overheating; or failing "stuck open," which prevents the engine from reaching its optimal operating temperature, leading to increased fuel consumption, poor cabin heating, and triggering a dashboard check engine light (CEL). This assembly has been meticulously inspected at our salvage facility; the internal valve spring has been tested for correct elasticity and opening force, and the composite plastic housing underwent pressure testing to ensure it is 100% free of hairline cracks or coolant leaks around the mounting faces. Additionally, the integrated temperature sensor connector pins are verified fully intact, fitting into place with millimeter precision to safely restore your vehicle's factory-spec cooling efficiency.