Four Seasons A/C Refrigerant Suction Hose P/N:66839

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$118.99
MPN: 66839
Item Package Quantity: 1
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Four Seasons A/C Refrigerant Suction Hose P/N:66839
Four Seasons A/C Refrigerant Suction Hose P/N:66839
$118.99

Route low-pressure refrigerant back to the compressor with the Four Seasons A/C Refrigerant Suction Hose 66839, an application-specific suction line assembly that drops in as a direct-fit replacement for the 2014-2018 Mazda 3 and 2014-2018 Mazda 3 Sport. This is the low-side hose that carries refrigerant vapor from the evaporator back toward the compressor, and a cracked, chafed, or leaking original is a common cause of lost cooling and low-charge conditions.

  • Double-wall barrier hose: constructed to be compatible with R1234YF, R134A, or R12 refrigerant.
  • Crimp fitting connection: factory-style crimped fittings at the line ends.
  • Seals included: comes with the gaskets, o-rings, or seals needed to properly replace the line.
  • Application-specific design: shaped for the listed Mazda applications and backed by Four Seasons' decades of mobile A/C experience.

If a leaking or damaged suction line is the cause of your weak A/C, this replaces it. Have the system evacuated and recharged to the vehicle's specification after installation.

Interchange: 785939 · BJS761462 · 211750 · A83519

This part cross-references / interchanges with the following part numbers:

785939, 66839, BJS761462, 211750, A83519

Frequently Asked Questions

What does this suction hose do?

It carries low-pressure refrigerant vapor from the evaporator back toward the compressor on the A/C system's suction (low) side.

Which vehicles does the 66839 fit?

It is a direct-fit replacement for the 2014-2018 Mazda 3 and 2014-2018 Mazda 3 Sport. See the Buyer's Guide tab to confirm your vehicle.

Which refrigerants is it compatible with?

The double-wall barrier hose is constructed to be compatible with R1234YF, R134A, or R12 refrigerant.

Does it come with seals?

Yes. It contains the gaskets, o-rings, or seals needed to properly replace the line.

What are signs this line may need replacing?

Weak or lost A/C cooling and a low-charge condition can point to a cracked, chafed, or leaking suction hose. Diagnose the cause before replacing.