Details

• Brand:

  

• SKU:

  4D0-260-749-B

• Positions: Front Upper, Front, Front Lower, Front Rear, Upper, Upper Front, Upper Lower, Upper Rear, Rear Upper Upper, Rear Upper Front, Rear Upper Lower, Rear Upper Rear, Lower Upper, Lower Front, Lower, Lower Rear, Left Upper, Left Front, Left Lower, Left Rear, Right Upper, Right Front, Right Lower, Right Rear, Rear Upper, Rear Front, Rear Lower, Rear, Rear Rearward Upper, Rear Rearward Front, Rear Rearward Lower, Rear Rearward Rear
• Other Names:

  A/C Line O-Ring, A/C Expansion Valve O-Ring, Expansion Valve O-Ring, Liquid Line O-Ring, Rear Pipe O-Ring, Suction Line O-Ring, Expansion Valve Seal, Trunk Lid Seal, Suction Pipe O-Ring, A/C Evaporator Core O-Ring, AC Line O-Ring, Evaporator Core O-Ring, Upper Press Line O-Ring, License Bracket Seal, AC Hose O-Ring, Pressure Hose O-Ring, Refrigerant Hose O-Ring, Packing Seal, O-Ring, Center AC Line O-Ring, Heater Core Seal, Hose & Tube Assembly O-Ring, Rear AC Line O-Ring, Rear AC Tube O-Ring, AC Tube O-Ring, AC Tube Seal, HVAC Heater Core O-Ring, License Bracket O-Ring, Rear AC Line Seal, Tube Assembly O-Ring, License Frame Seal, Washer

• Description:

  Genuine Audi Expansion Valve O-Ring (4D0-260-749-B) is a critical sealing component in the Audi A8 air conditioning system, designed to maintain a leak-free connection at the expansion valve where refrigerant transitions from liquid to vapor. This genuine Audi OEM part ensures a precise fit for A8 models and directly supports consistent, efficient cabin cooling performance. Unlike aftermarket alternatives, this factory-spec O-ring is manufactured to exact Audi tolerances using materials engineered to withstand the specific temperature swings, refrigerant pressures, and chemical exposure found in Audi A8 A/C systems. Aftermarket O-rings frequently use inferior rubber compounds that harden, swell, or crack prematurely, leading to refrigerant leaks, compressor stress, and costly repairs. The genuine 4D0260749B eliminates that risk by delivering the same dimensional accuracy and durometer rating as the original component. Also commonly searched as an A/C Line O-Ring, A/C Expansion Valve O-Ring, Liquid Line O-Ring, or Rear Pipe O-Ring, this part is the correct OEM solution when addressing refrigerant seepage at the expansion valve assembly. Whether you are performing a refrigerant recharge, replacing the expansion valve, or resolving a slow A/C leak, using the Audi OEM Expansion Valve O-Ring 4D0-260-749-B ensures a lasting, reliable repair. Audi Henderson is an authorized Audi dealer, and every genuine OEM part purchased through us includes the full manufacturer warranty.

• Notes: Included with housing. Included with liquid line. Included with heater core. Included with blower case. Included with suction line. Included with suction pipe. Included with pressure hose. Included with Refrigerant hose. Included with upper pressure line. Included with hose and tube assembly. Included with center AC line. Part cannot be reused/reinstalled.

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