Genuine Mercedes (2000+) Fluid Guide Tube Auto Transmission w164 r171 w203 w211 Guide Tube For Auto Trans Fluid (Channels Fluid to Transmission) Brand NEW part with full 1 year warranty. Mercedes part# 251 271 00 97, note the vin splits. Genuine Mercedes part, recently made: not been lying around. PLEASE NOTE: w204 C-class fits Transmission 722.997 only. Not sure about your car? Email us your VIN.