Radiator Coolant Expansion Tank for Fiat Ducato, Peugeot Boxer, Citroen Relay | OEM 1374132080

A Radiator Coolant Expansion Tank (Reservoir) – OEM 1374132080 is an essential part of the cooling system for popular light commercial vehicles including the Fiat Ducato, Peugeot Boxer and Citroën Relay. This tank stores excess coolant as engine temperature rises and feeds it back into the cooling circuit as temperatures drop, helping maintain optimal coolant levels, pressure balance and efficient engine temperature control. Failing or cracked expansion tanks can lead to coolant loss, overheating, low-coolant warnings and potential engine damage, making timely replacement crucial for reliable van operation.

OEM Number: 1374132080, 1611966680, 1674058380, 1374133080, 167405838,

Fitting Position : Front Axle, Upper

Quantity : 1

Our SKU: TF1374132080_94
 
All our Radiator Coolant Expansion Tank For Fiat Ducato Peugeot Boxer Citroën Relay are OEM quality and reliable after market car parts. This Radiator Coolant Expansion Tank For Fiat Ducato Peugeot Boxer Citroën Relay is specifically compatible with Citroën: Relay, Fiat: Ducato, Peugeot: Boxer, .

Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.

If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.

Key Benefits

• Maintains Correct Coolant Levels: Holds excess coolant from the radiator and returns it to the system as the engine cools to maintain stable coolant volume and pressure.

• Prevents Overheating: By helping regulate pressure and fluid flow in the cooling circuit, it supports efficient heat management and reduces the risk of overheating under load or in hot conditions.

• Direct OEM Referenced Fit: Designed to replace the OEM expansion tank with part number 1374132080 and compatible references like 1374133080, 1611966680 and 1674058380, ensuring straightforward fitment on applicable Fiat / Peugeot / Citroën vans.

• Durable Aftermarket Construction: Made from heat-resistant plastic to withstand engine-bay temperatures, vibration and everyday use.

• Wide Vehicle Coverage: Fits many Ducato III / Boxer / Relay models across diesel engines (e.g., 2.2 L, 2.3 L, 3.0 L) — ideal when the original tank shows cracks, leaks or discolouration.

Frequently Asked Questions (FAQs)

Q1: What is a radiator coolant expansion tank?
A: It’s a reservoir that captures excess engine coolant when temperatures rise, and feeds it back into the cooling system as the engine cools, helping maintain correct coolant levels and pressure.

Q2: Which vehicles does part 1374132080 fit?
A: This expansion tank commonly fits Fiat Ducato, Peugeot Boxer and Citroën Relay vans — especially models built approximately 2014-onwards — with compatible diesel engines. Always match your vehicle’s OEM number to ensure correct fitment.

Q3: How do I know if the expansion tank needs replacing?
A: Look for cracks, leaks, coolant smell, low-coolant warnings on the dash or overheating — these are common signs of a failing reservoir or cap.

Q4: Does the tank come with a cap and sensors?
A: Some aftermarket tanks include the cap and sensor ports, but this varies by listing — check the product description to confirm what’s included with your purchase.

Q5: Is this a difficult replacement?
A: Replacing an expansion tank is usually a moderate DIY task: drain some coolant, disconnect hoses and fasteners, fit the new tank and refill coolant. Professional installation helps ensure leak-free sealing and correct coolant bleed.