Genuine Volkswagen Coolant Expansion Tank Cap P# 3B0121321 – Suits 2.0L TDI CR TB503 📦 Also available: left control

📦 Also available: left control arm

and moisture

Genuine VW twin radiator hose

or a full protection pack

It injects AdBlue (DEF) into the SCR system

Genuine Volkswagen Coolant Expansion Tank Cap P# 3B0121321 – Suits 2.0L TDI CR TB503 📦 Also available: left controlGenuine Volkswagen Coolant Expansion Tank Cap Part Number: P# 3B0121321 This genuine Volkswagen expansion tank cap is designed for use with the coolant reservoir on vehicles equipped with the 2. 0L TDI CR (103 kW 140 hp) engine. It maintains correct pressure within the cooling system, ensuring optimal temperature control and preventing leaks or coolant loss. Engine Compatibility: 4 Cylinder 2. 0L Bi Turbo Diesel (BTI) Common Rail Injection Engine