HomeHVAC > Hoses and PipesFour Seasons 66757 A/C Refrigerant Discharge / Suction Hose Assembly
Part #: 66757

Four Seasons 66757 A/C Refrigerant Discharge / Suction Hose Assembly

Hose Assembly
⚙️ 10 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Pontiac and Buick, Grand Prix and Century
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Four Seasons Hose Assembly 66757

The Four Seasons Hose Assembly 66757 is designed specifically for Buick Century and Pontiac Grand Prix models. This A/C refrigerant discharge and suction hose assembly ensures reliable performance with its durable aluminum and rubber construction, tailored for R134-a refrigerant systems.

  • Constructed from aluminum and rubber for durability and flexibility
  • Compatible with R134-a refrigerant type
  • Includes gasket, fittings, and multiple O-rings for secure sealing
  • Features P-nut fittings on both discharge and suction ends
  • Equipped with a muffler and manifold block for noise reduction and system efficiency
  • OE replacement part designed without a service port or bracket

Detailed Product Description

This Four Seasons Hose Assembly from the Hose Assembly product line is engineered to meet original equipment specifications for Buick Century and Pontiac Grand Prix vehicles. The assembly combines aluminum and rubber materials to provide a balance of strength and flexibility, essential for handling the pressures and temperatures of automotive A/C systems using R134-a refrigerant. It includes all necessary fittings and gaskets, such as sealing washers and green O-rings, to ensure leak-free connections. The discharge and suction ends both utilize P-nut fittings, facilitating straightforward installation and compatibility with existing system components. Additionally, the integrated muffler helps reduce operational noise, while the manifold block supports system stability.

Applications and Common Issues Addressed

  • Replacement of worn or cracked A/C refrigerant hoses in Buick Century and Pontiac Grand Prix
  • Elimination of refrigerant leaks caused by damaged seals or fittings
  • Restoration of proper refrigerant flow and pressure in the A/C system
  • Reduction of noise from refrigerant discharge with built-in muffler
  • Upgrade to an OE replacement hose assembly for reliable system performance

Installation Notes and Tips

  • Ensure compatibility with Buick Century and Pontiac Grand Prix models before installation
  • Use included O-rings and sealing washers to prevent refrigerant leaks
  • Check that P-nut fittings are securely tightened without over-torquing
  • Note that this assembly does not include a service port or bracket; verify existing system components for compatibility
  • Handle aluminum and rubber sections carefully to avoid damage during installation

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66757 is an OE replacement part designed to meet or exceed original equipment standards. It includes all necessary seals and fittings to ensure a proper fit and function. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality standards for durability and reliability in automotive HVAC applications.

BrandFour Seasons
Part Number66757
PositionHose Assembly
Bracket?w/o Bracket
Discharge End StyleP-Nut Fitting
Discharge End TypeP-Nut Fitting
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
Manifold Suc StyleBlock
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[24628] / Green O-Ring
O-Rings Included?Included
O.E. Replacement?Yes
Refrigerant TypeR134-A
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 10 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2003PontiacGrand Prix3.1LV6N/AHose Assembly
2002PontiacGrand Prix3.1LV6N/AHose Assembly
2001PontiacGrand Prix3.1LV6N/AHose Assembly
2000PontiacGrand Prix3.1LV6N/AHose Assembly
1999BuickCenturySedan3.1LV6N/AHose Assembly
1999PontiacGrand Prix3.1LV6N/AHose Assembly
1998BuickCenturySedan3.1LV6N/AHose Assembly
1998PontiacGrand Prix3.1LV6N/AHose Assembly
1997BuickCenturySedan3.1LV6N/AHose Assembly
1997PontiacGrand Prix3.1LV6N/AHose 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:

102785981029158310403405104433991531021195618034644474811967573102166757704581781579A83371HA11177C

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