Genuine JAC radiator water reservoir (expansion tank)

Product Description: This part, known as the Coolant Expansion Tank , is a vital and essential plastic component in the engine cooling system of JAC GS3, GS4, and GS5 vehicles. Its primary function is to manage changes in coolant volume: it receives excess coolant resulting from thermal expansion when the engine heats up and draws this coolant back into the radiator when the engine cools down. This ensures the cooling system remains sealed and fully filled, preventing air ingress and maintaining proper operating pressure.

Benefits and Features (Original from the Agency):

• OEM Quality and Conformity: Genuine agency part made from high-quality plastic (often heat and chemical resistant polymers) to withstand high pressure and extreme temperatures.
• Regulating system pressure: Ensures the reservoir cap works efficiently, maintaining the required pressure within the cooling system and preventing premature boiling of the liquid.
• Protection against overheating: Maintaining the correct fluid level protects the engine from catastrophic breakdowns caused by a lack of coolant.
• Accurate level indicator: Clear markings (MIN/MAX) are provided to enable the user to monitor the coolant level easily and effectively.

Specifications:

• Part Name: Radiator Water Tank / Expansion Tank.
• Vehicle model: JAC GS3 / GS4 / GS5.
• The side: It is fixed in the engine compartment.
• Condition: New.
• Type: Original (Agency).

⚠️ Important Notice: Please make sure the part matches your vehicle's chassis number before purchasing the product or after ordering.