Check out the B5 S4 2.7T Silicone Heater Core Hose Here!

The OEM Heater Core Hose Set for Audi B5 S4 2.7T has become NLA (No Longer Available) from Audi, Part # 8D0 819 731 AQ & 8D0 819 737 T. 034Motorsport has designed and manufactured this high quality, high-performance set of hoses to replace your worn and cracked factory heater core hoses.

The 034Motorsport Silicone Heater Core Hose Set is manufactured from high-quality automotive-grade reinforced silicone and is guaranteed to outlast the factory rubber hoses!


  • 8D0 819 731 AQ
  • 8D0 819 737 T


  • Supply Hose
  • Return Hose
  • Hose Clamps