Motorcraft YF37129 A/C Line O-Ring Refrigerant Hose Seal

The Motorcraft YF-37129 is a genuine OEM A/C line O-ring engineered to provide a leak-free seal at refrigerant hose and tube connections in the air conditioning system. Manufactured to Ford Motor Company factory specifications, this O-ring delivers precise fit and reliable sealing performance in the demanding conditions of an automotive A/C circuit.

Key Features:

• Genuine Motorcraft OEM part — the only A/C line O-ring recommended by Ford Motor Company
• Designed to Ford factory specifications for precise fit and application suitability
• Manufactured from first-quality materials to withstand refrigerant pressure and temperature extremes
• Provides critical mechanical cushioning and seal integrity at A/C hose and tube junctions
• Backed by the Motorcraft Service Parts Warranty (3 years, no commercial exceptions)
• Warranty supported nationwide by Ford/Lincoln dealers and Ford Authorized Distributors

This O-ring is a single-use sealing component intended to replace a worn or damaged seal during A/C hose, tube, or line service. Always install a new O-ring whenever an A/C connection is opened — do not reuse the original seal. Part number: YF-37129 (also referenced as YF37129).