Keep cold air flowing and refrigerant sealed with the Four Seasons A/C Refrigerant Discharge / Suction Hose Assembly (MPN 66749). It routes high-pressure discharge and low-pressure suction refrigerant between the A/C system components, and it drops in as a direct-fit replacement for the 2013-2015 Cadillac ATS. Backed by decades of mobile A/C experience, this assembly is designed to replace a worn, leaking, or damaged original line.
- Includes sealing hardware: ships with the gaskets, o-rings, or seals needed to properly install the assembly.
- Double-wall barrier hose: constructed with double-wall barrier hose compatible with R1234YF, R134A, or R12 refrigerant.
- Crimp fitting connection: uses factory-style crimped fittings at the ends.
- Application-specific design: engineered for the listed application for a proper fit and routing.
Signs the original hose may need replacing include refrigerant leaks, oily residue at the fittings, or a system that no longer holds a charge. If a failed discharge/suction line is the cause, this assembly replaces it. For engine-level details, see the "Vehicles it fits" section.
Interchange: 1534573 · 781565 · 22893425 · 23428364 · 700188 · 4813097 · 211660 · A83349 · HA111804 · HA111804C
This part cross-references / interchanges with the following part numbers:
1534573, 781565, 66749, 22893425, 23428364, 700188, 4813097, 211660, A83349, HA111804, HA111804C
Frequently Asked Questions
What vehicle does this hose assembly fit?
It is a direct-fit replacement for the 2013-2015 Cadillac ATS. Check the "Vehicles it fits" section to confirm the exact application for your vehicle.
Does it come with seals?
Yes. It contains the gaskets, o-rings, or seals needed to properly install the assembly.
What refrigerants is the hose compatible with?
The hose is constructed with double-wall barrier hose compatible with R1234YF, R134A, or R12 refrigerant.
How does this hose connect to the system?
It uses crimp fitting connections at the ends, matching a factory-style installation.
What are signs this hose may need replacing?
Common signs include refrigerant leaks, oily residue at the fittings, or an A/C system that will not hold a charge. Diagnose the cause before replacing.
