HomeHVAC > Hoses and PipesFour Seasons 56121 A/C Refrigerant Suction Hose
Part #: 56121

Four Seasons 56121 A/C Refrigerant Suction Hose

Hose Assembly
⚙️ 18 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Ford and Mercury, Crown Victoria and Grand Marquis
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Reliable A/C Refrigerant Suction Hose for Ford and Mercury Vehicles

The Four Seasons Hose Assembly 56121 is designed specifically for low-pressure A/C refrigerant suction applications in Ford Crown Victoria and Mercury Grand Marquis models. Constructed with durable aluminum and rubber materials, this hose assembly ensures efficient refrigerant flow and system reliability.

Key Features of Four Seasons Hose Assembly 56121

  • Material: Combination of aluminum and rubber for durability and flexibility
  • End 1 Type: Springlock fitting for secure connection
  • End 2 Type: Male springlock fitting for compatibility
  • Refrigerant Type: Compatible with R134-a refrigerant systems
  • Includes gasket and fittings for complete installation
  • O-rings included: Six green O-rings (part number 24672) and two spring O-rings (part number 24222)
  • Designed as a suction line for low-pressure A/C system operation
  • Service port included for maintenance without switch
  • OE replacement part ensuring proper fit and function

About the Four Seasons Hose Assembly Product Line

The Hose Assembly line from Four Seasons focuses on delivering precise HVAC hose and pipe solutions tailored to specific vehicle applications. This product line emphasizes compatibility and quality, providing assemblies that include necessary fittings and seals to streamline installation and maintain system integrity. The 56121 hose assembly is part of this line, engineered to meet the exact specifications required for Ford Crown Victoria and Mercury Grand Marquis A/C systems.

Detailed Product Description

This A/C refrigerant suction hose assembly is constructed with a combination of aluminum and rubber, offering a balance of strength and flexibility to withstand the demands of low-pressure refrigerant flow. The springlock fittings on both ends ensure a secure and leak-resistant connection to the vehicle’s HVAC system. Included gaskets and fittings simplify installation, while the multiple O-rings provide reliable sealing to prevent refrigerant loss. Designed for use with R134-a refrigerant, this hose assembly is an OE replacement part, ensuring compatibility and performance consistent with factory standards.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant suction hoses
  • Resolving refrigerant leaks caused by cracked or deteriorated hoses
  • Restoring proper low-pressure refrigerant flow in Ford Crown Victoria and Mercury Grand Marquis A/C systems
  • Eliminating connection failures due to faulty or missing fittings and seals
  • Maintaining system efficiency by ensuring secure springlock connections

Installation Notes and Tips

  • Verify compatibility with Ford Crown Victoria or Mercury Grand Marquis before installation
  • Ensure all included O-rings and gaskets are properly seated to prevent leaks
  • Use appropriate tools to connect springlock fittings securely without damaging the hose
  • Inspect the A/C system for additional wear or damage during replacement
  • Follow vehicle manufacturer guidelines for refrigerant handling and system servicing

Quality Assurance and Warranty

Four Seasons Hose Assembly 56121 is manufactured to meet or exceed OEM specifications for fit, form, and function. This part is an OE replacement designed to maintain the integrity of your vehicle’s HVAC system. While specific warranty details may vary, Four Seasons products typically come with a limited warranty covering defects in material and workmanship to ensure reliability and customer confidence.

BrandFour Seasons
Part Number56121
PositionHose Assembly
Bracket?w/o Bracket
Component TypeSuction Line
DescriptionHose Assemblies
End 1 TypeSpringlock
End 2 TypeMale Springlock
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum / Rubber
Muffler?w/o Muffler
O-Ring A Number/Desc[24672] / Green O-Ring
O-Ring B Number/Desc[24222] / Spring
O.E. Replacement?Yes
Refrigerant TypeR134-A
Service Port?w/ Service Port
Suction End TypeSpringlock
Switch Included?Not Included
System PressureLow Pressure

This part fits 18 vehicles. Search below:

YearMakeModelPositionNotes
2011FordCrown VictoriaN/ASuction Line; Bolts to Evaporator; Hose Assembly
2011MercuryGrand MarquisN/ASuction Line; Bolts to Evaporator; Hose Assembly
2010FordCrown VictoriaN/ASuction Line; Bolts to Evaporator; Hose Assembly
2010MercuryGrand MarquisN/ASuction Line; Bolts to Evaporator; Hose Assembly
2009FordCrown VictoriaN/ASuction Line; Bolts to Evaporator; Hose Assembly
2009MercuryGrand MarquisN/ASuction Line; Bolts to Evaporator; Hose Assembly
2008FordCrown VictoriaN/ASuction Line; Bolts to Evaporator; Hose Assembly
2008MercuryGrand MarquisN/ASuction Line; Bolts to Evaporator; Hose Assembly
2007FordCrown VictoriaN/ASuction Line; Bolts to Evaporator; Hose Assembly
2007MercuryGrand MarquisN/ASuction Line; Bolts to Evaporator; Hose Assembly
2006FordCrown VictoriaN/ASuction Line; Bolts to Evaporator; Hose Assembly
2006MercuryGrand MarquisN/ASuction Line; Bolts to Evaporator; Hose Assembly
2005FordCrown VictoriaN/ABolts to Evaporator; Hose Assembly
2005MercuryGrand MarquisN/ABolts to Evaporator; Hose Assembly
2004FordCrown VictoriaN/ABolts to Evaporator; Hose Assembly
2004MercuryGrand MarquisN/ABolts to Evaporator; Hose Assembly
2003FordCrown VictoriaN/ABolts to Evaporator; Hose Assembly
2003MercuryGrand MarquisN/ABolts to Evaporator; 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:

201241561215710106074776W7Z19835AA6W7Z19D735AA785417A70665HA113697CT56121YF3224

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