●OE number: the OE number of the replacement part is 1J0121087E. For the cooling circuit. ●REPLACEMENT FOR The coolant Y flange is especially suitable for Mk4 1.8T 2000-2005. Fits TT 2000-2002 ●Reliable Material The coolant pipe adapter is made of high quality aluminum alloy material for durability and stability. Good quality can provide a safer guarantee for your life. ●IDEAL REPLACEMENT Coolant Y flange with stable performance and long service life. Direct replacement for your old or broken one. ●Package includes: 1 x coolant Y flange