VW MK3 Golf, Jetta, Passat & Cabrio Upper Radiator Coolant Hose — 1H0121101B

Genuine OEM upper radiator coolant hose for the Volkswagen MK3 platform. Responsible for transporting hot coolant from the engine to the radiator to regulate engine temperature — a critical component in the cooling system that hardens, cracks, and collapses with age on 30-year-old MK3s.

On aging MK3s, brittle coolant hoses are one of the most common causes of overheating and coolant loss. Sourcing an OEM donor hose is the correct fit when aftermarket options don’t match the factory routing or connection points.

Part Numbers

• 1H0121101B
• Supersedes: 1H0121101AC / 1H0-121-101-AC

Fitment

• Volkswagen Golf MK3 (1.8L, 2.0L 8v, 1.9L TDI, 1.9L D/TD): 1993–1999
• Volkswagen Jetta MK3 (1.8L, 2.0L 8v, 1.9L TDI, 1.9L D/TD): 1993–1999
• Volkswagen Vento (1.8L, 2.0L 8v): 1992–1998
• Volkswagen Cabrio MK3 (2.0L): 1994–1996
• Volkswagen Passat B4 (1.9L TDI AHU): 1996–1997

⚠️ Verify engine code and hose routing before ordering. Fits multiple engine variants across the MK3 platform — confirm your specific application matches.

Why V DUB HUB

• ✔ Genuine OEM Volkswagen — correct factory routing and connection points
• ✔ Inspected before listing
• ✔ Wide MK3 platform compatibility
• ✔ Factory discontinued — donor sourced