Is it dangerous to drive with a cracked reservoir?

Not immediately, but ongoing coolant loss risks eventual overheating — repair promptly and monitor coolant level in the meantime.

Can a cracked reservoir be repaired instead of replaced?

Plastic welding or epoxy can sometimes work as a temporary fix, but replacement gives a more reliable, leak-free result.

What is the reservoir made of?

Translucent, heat-resistant plastic, so coolant level can be checked visually against markings on the side.

What is this part and what does it do?

Full description available in the product description section above. Contact us with clarifying questions.

How do I tell if my part is faulty?

See the 'Signs of a faulty part' section above or run a diagnostic at an auto service.

Yes - all our used parts are tested before sale and sold with guaranteed quality.

When should the part be replaced?

When warning signals appear, diagnostic codes are present, or the system malfunctions.

Coolant reservoir VW CRAFTER 2018

Name: Coolant reservoir VW CRAFTER 2018
Brand: VW
SKU: 7E0121407B
Price: 27.00 EUR
Availability: OutOfStock

OEM: 7E0121407B

Disassembled car photo

Engine running

Tested before shipping
Guaranteed quality
Fast delivery 3–7 days
14-day returns

What is this part and why does it matter?

The coolant reservoir (expansion or overflow tank) stores excess coolant as it expands with heat and provides a low-pressure point to check coolant level safely.

Ask a question

Not sure about compatibility? Send us a question with your car's make, model and year.

Ask about this product

Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

Coolant leak or crack visible on the tank
Coolant level dropping consistently despite no visible leak elsewhere
Cap not sealing properly

Installation information

Bolts or clips into place, connected with a hose to the radiator or engine — always refill to the correct level marked on the tank.

Donor vehicle description

VIN: WV1ZZZSYZJ9027566
Make, model: VW CRAFTER CR
Year: 2018
Engine: Diesel 2.0 TDI 103KW DAUA
Transmission: 6-speed Mehanic RHE
Drive: Front
Equipment: LHD
Colour: 98 / H8C

252 parts from this car

Frequently asked questions

Most often from age and heat cycling making the plastic brittle, or from the cap seal failing and letting pressure build unevenly.

What our customers say

All reviews →

Price: affordable. Service: electrical equipment repair.
A
Andris B.
September 2026
Price: excellent.
D
Didier V.
August 2026
Super good! They came through with the part I needed, quickly and at a fair price! Thanks, and I definitely recommend!
I
Ilmars K.
August 2026
I ordered a Heater Blower Motor Resistor for a Toyota Avensis. Delivery took eight days from Latvia to Ireland. I installed it, and everything works perfectly. I wish this company success.
A
Aleksandr L.
Toyota Avensis
August 2026
No complaints about Evro Trans itself, everything's fine. But the delivery..... It felt like the order was being carried by turtles. 4 days from Riga to Daugavpils. Judging by the tracking, the parcel just sat somewhere behind a shed for 3 days, then they found it and delivered it the next day. I think that's why I won't be ordering there again.
P
Paul F.
June 2026
Super fast delivery of the part, and good quality of the used part. Thanks for the service.
N
Natālija I.
May 2026
I ordered antifreeze heaters and an auxiliary pump. Everything arrived quickly, the very next day, and matched the description. I'm satisfied.
J
Juris J.
February 2026
Excellent service, timely delivery, and complete transparency at every step. I highly recommend EvroTrans to anyone looking for a reliable partner!
E
Egor S.
November 2025
Bought a front fender for my car. I liked it! After payment they sent more than 20 photos of the problem areas, and it was packed very securely - took a while to unwrap.
I
Igors K.
Front fender
October 2025