Coolant Expansion Tank 1J0121403B 1C0121407F 1J0121407F | Fits VW Golf Jetta Beetle | VW Partly

RESTORE PROPER COOLANT FLOW

A cracked, leaking, worn, damaged, missing, or failed coolant expansion tank can cause poor fitment, unstable operation, leaks, or loss of coolant flow and system sealing.

This OEM-style aftermarket coolant expansion tank is designed to restore coolant flow and system sealing for compatible Volkswagen Group vehicles when the OE reference and physical design match the original part.

FEATURES

• OEM-style aftermarket replacement

• Direct-fit installation

• Manufactured to OE specifications

• Durable wear-resistant construction

• Restores proper coolant flow and system sealing

• Helps prevent coolant leaks

• Suitable for professional repair and maintenance

OEM REFERENCE

• 1J0121403B

• 1C0121407F

• 1J0121407F

COMPATIBLE VEHICLES

VOLKSWAGEN

• Golf

• Jetta

• Beetle

Please verify compatibility using VIN number, engine code, or OEM part number before purchase.

COMMON SYMPTOMS

• Coolant leakage near the pipe connection

• Low coolant level warning

• Overheating caused by confirmed coolant loss

• Visible cracks or aging on coolant pipe

• Coolant odor from engine bay

WHY REPLACE THIS PART?

Replacing a confirmed worn or damaged coolant expansion tank helps restore reliable operation, proper fitment, and the intended system connection. It also helps prevent further damage caused by loose, cracked, leaking, or missing components during professional repair.