Chery FX Expansion Tank Inlet Pipe (Part No.: 302000239AA)

Let's get to the point - this is not just some random plastic pipes in the engine compartment of your Chery FX. This is the "coolant delivery pipe" of the cooling system: a flexible and sturdy rubber or plastic pipe specifically designed to connect the expansion tank (i.e., the coolant storage) of the Chery FX with the engine's cooling system - usually the radiator or water pump. Imagine it as a "coolant bridge" - it enables the coolant to flow smoothly between the expansion tank and other key components, ensuring that the entire cooling system remains balanced and operates normally. What is its main job? Remove or drain the coolant from the expansion tank: When the system needs to be filled, send the coolant to the main cooling circuit. When the engine is heated, guide the excess or expanded coolant back to the expansion tank. Without it, the expansion tank cannot be connected to the rest of the cooling system, which will result in insufficient coolant, overheating or accumulated pressure.

This expansion fuel tank intake pipe is only manufactured for Chery fx - please be sure to check the vehicle's VIN for a perfect match! It is tailor-made for the cooling system layout of FX: its length and bending Angle are fully in line with the space of the engine compartment (no forced installation required), its connection ports are perfectly aligned with the expansion tank and radiator/water pump (so there will be no leakage), and its material can handle the high temperature of the engine coolant - up to 120°C or higher. If you take a general-purpose pipe, you will encounter problems: it may be too long or too short (causing twisting or stretching), have mismatched ports (causing coolant leakage), or be made of cheap materials (melting or cracking under the heat overflow coolant, which may damage the engine).

 Core work: Maintain the flow of coolant and system balance

This is a small part, but it is very important for the cooling system of Chery FX - here are three key things:

Circulating coolant like a bridge: It serves as a direct passage between the expansion tank and the main cooling system. When the engine cools down and the coolant contracts, it will pull the coolant from the fuel tank to the radiator or water pump. When the engine heats up and the coolant expands, it will send the extra coolant back to the fuel tank.

Maintain system pressure balance: By allowing the coolant to flow smoothly, it helps the expansion tank control the pressure of the cooling system. This can prevent pressure peaks that might burst the hose or damage the radiator, and ensure that the system remains filled with coolant.

Help eliminate bubbles: It guides bubbles from the main cooling circuit into the expansion tank, where air rises to the top and is released. This keeps the air away from the cooling system because the bubbles reduce the heat transfer efficiency and cause local overheating.

This 302000239AA expansion tank intake pipe is only applicable to Chery fx - installation error = cooling system failure:

Suitable for these models: All Chery FX variants (matching the component position of the cooling system, port size and pipe length - confirmed by VIN).

Not suitable for these

Other Chery models (such as QQ and Tiger 3) : The engine compartment, the position of the expansion tank, and the layout of the cooling system are different - the pipes are too long or too short or the ports do not match.

Non-chery vehicles: Even if the diameters are similar, the component connections and bending angles do not match - they cannot be installed or used.

Chery FX and Improved cooling System: After-sales expansion tanks or radiators may have different port sizes - the original pipes will not be sealed.

 Installation and Maintenance (DIY-friendly - but pay attention to sealing!)

Installation: Easy to replace (safely follow the steps below)

Replacing this pipe is simple, but always work on a cooled engine to avoid burns

Drain the coolant (part) : Place a container under the drain plug of the radiator, open the drain plug of the radiator, and drain enough coolant to keep it below the water level of the expansion tank (to prevent leakage when removing the pipes).

Remove the old pipeline: Use a screwdriver or pliers to loosen the hose clamps at both ends of the old pipeline, and pull the pipeline out from the expansion tank and the radiator/water pump port.

Install the new pipe: Slide 302000239AA onto both ports (make sure they are fully fixed), and then tighten the hose clamp - do not over-tighten (this will damage the pipe or ports).

Supplement and test: Replenish the cooling system with the coolant recommended by Chery, start the engine, and check if there is any leakage around the pipe connections. Let the engine run to the working temperature and confirm that there are no problems.

Maintenance: Keep running smoothly (quick check)

Monthly check for leaks: Inspect for coolant stains around pipe connections or the pipe body. Leakage indicates that the fixture is loose or the pipe is cracked (repair it immediately to prevent coolant loss).

Check for signs of aging: Over time, pipes may harden, crack or bulge. If it feels very brittle or shows obvious damage, replace it - an aged pipe may suddenly fail.

Tighten once a year: Engine vibration can cause the hose clamp to loosen. Recheck and tighten the valve every year to maintain a tight seal.

Avoid oil stains: Do not let oil stains come into contact with the pipes - oil stains can cause rubber/plastic to degrade, leading to premature wear and leakage.

Summary: Chery FX Expansion Tank Inlet Pipe (302000239AA)

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