HomeHVAC > Hoses and PipesFour Seasons 56659 A/C Refrigerant Discharge / Suction Hose Assembly
Part #: 56659

Four Seasons 56659 A/C Refrigerant Discharge / Suction Hose Assembly

Hose Assembly
8 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Hose Assembly
Fitment: Chevrolet, Oldsmobile, and Pontiac, Venture, Silhouette, Montana, and Trans Sport
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Overview of Four Seasons Hose Assembly 56659

The Four Seasons Hose Assembly 56659 is designed specifically for HVAC systems in select Oldsmobile and Pontiac vehicles. This A/C refrigerant discharge and suction hose assembly ensures reliable performance with durable aluminum and rubber construction, compatible with R134a refrigerant.

  • Material: Aluminum and rubber for durability and flexibility
  • Refrigerant Type: Compatible with R134a
  • Includes gasket and sealing washers for secure connections
  • Equipped with a switch service port for easy diagnostics
  • Discharge and suction ends feature P-nut fittings
  • Includes muffler and manifold components
  • O-rings included for proper sealing (various types and quantities)
  • OE replacement part designed for Oldsmobile Montana, Pontiac Silhouette, and Pontiac Trans Sport

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly product line focuses on providing reliable HVAC hose and pipe solutions tailored to specific vehicle applications. This line emphasizes quality materials and precise fitment to maintain system integrity and performance. The 56659 hose assembly is part of this line, offering a direct OE replacement with included sealing components and service ports to facilitate maintenance and repairs.

Detailed Product Description

This A/C refrigerant discharge and suction hose assembly combines aluminum and rubber materials to withstand the pressures and temperatures typical in automotive HVAC systems. It is designed for use with R134a refrigerant and includes essential components such as gaskets, sealing washers, and multiple O-rings to ensure leak-free connections. The assembly features P-nut fittings on both discharge and suction ends, a muffler to reduce noise, and a manifold for proper refrigerant flow. While fittings are not included, the hose assembly comes with a switch service port to support system diagnostics. This part is a direct OE replacement, compatible with Oldsmobile Montana, Pontiac Silhouette, and Pontiac Trans Sport models.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant hoses in Oldsmobile Montana and Pontiac Silhouette HVAC systems
  • Resolving refrigerant leaks caused by degraded seals or O-rings
  • Addressing noise issues in the A/C system with the included muffler
  • Improving refrigerant flow and system efficiency with a properly functioning manifold
  • Facilitating maintenance and diagnostics through the integrated switch service port

Installation Notes and Tips

  • Ensure compatibility with Oldsmobile Montana, Pontiac Silhouette, or Pontiac Trans Sport before installation
  • Use the included gaskets and O-rings to prevent refrigerant leaks
  • Check that P-nut fittings are properly tightened to manufacturer torque specifications
  • Inspect the switch service port for accessibility during installation
  • Replace any worn fittings separately, as fittings are not included with this assembly

Quality Assurance and Warranty

The Four Seasons Hose Assembly 56659 is manufactured to meet or exceed OEM specifications for fit and function. It includes all necessary sealing components to ensure a secure installation. This part is an OE replacement designed to maintain the integrity of the HVAC system in compatible Oldsmobile and Pontiac vehicles. Warranty details should be confirmed with the product documentation or supplier.

BrandFour Seasons
Part Number56659
PositionHose Assembly
Bracket?w/o Bracket
Discharge End StyleP-Nut Fitting
Discharge End TypeP-Nut Fitting
Fittings IncludedNot Included
Friction Material Attachmentw/ Switch Port
Gasket Or Seal IncludedIncluded
Manifold?Yes
MaterialAluminum / Rubber
Muffler?w/ Muffler
O-Ring A Number/Desc[24354] / Sealing Washer
O-Ring B Number/Desc[24622] / Green O-Ring
O-Ring C Number/Desc[24661] / Green O-Ring
O-Rings Included?Included
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port TypeR134-A Quick Disconnect
Service Port?w/o Service Port
Suction End StyleP-Nut Fitting
Suction End TypeP-Nut Fitting
Switch Included?Not Included
TypeDischarge & Suction Line

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
2000OldsmobileSilhouetteN/A1st Design; w/ Rear AC; O-Ring Fitting at Accumulator End; Hose Assembly
2000PontiacMontanaN/A1st Design; w/ Rear AC; O-Ring Fitting at Accumulator End; Hose Assembly
1999OldsmobileSilhouetteN/Aw/ Rear AC; Hose Assembly
1999PontiacMontanaN/Aw/ Rear AC; Hose Assembly
1998OldsmobileSilhouetteN/Aw/ Rear AC; Hose Assembly
1998PontiacTrans SportN/Aw/ Rear AC; Hose Assembly
1997OldsmobileSilhouetteN/Aw/ Rear AC; Hose Assembly
1997PontiacTrans SportN/Aw/ Rear AC; Hose Assembly

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

10149475102786111041947511156659153085719208302282660344693781079481158051733566595730857704674781079A72660ACD1530857CWK781079HA10440HA10440C

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.