HomeHVAC > Hoses and PipesFour Seasons 66318 A/C Refrigerant Discharge Hose
Part #: 66318

Four Seasons 66318 A/C Refrigerant Discharge Hose

Hose Assembly
13 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Hose Assembly
Fitment: Mercedes-Benz, C300, C350, E300, E350, GLK300, and GLK350
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Overview of Four Seasons Hose Assembly 66318

The Four Seasons Hose Assembly 66318 is designed specifically for Mercedes-Benz models including the C300, C350, E300, E350, GLK300, and GLK350. This A/C refrigerant discharge hose ensures reliable performance by using durable aluminum and rubber materials, engineered to handle R134a refrigerant systems.

  • Constructed from aluminum and rubber for durability and flexibility
  • Compatible with R134a refrigerant systems
  • Includes necessary fittings and green O-rings for a secure seal
  • Original equipment replacement discharge line without a service port or bracket
  • Designed with a P-nut fitting on the suction end for proper connection

Detailed Product Description

The Four Seasons Hose Assembly 66318 belongs to the Hose Assembly product line, which focuses on providing high-quality hose assemblies for automotive HVAC systems. This particular discharge hose is an OE replacement part, ensuring it meets the specifications required for proper function in Mercedes-Benz vehicles. The assembly includes green O-rings (part numbers 24649 and 24677) to maintain a tight seal and prevent refrigerant leaks. It is designed without a muffler, bracket, or service port, which aligns with the original equipment configuration for the specified Mercedes-Benz models.

Applications and Problem Solving

This A/C refrigerant discharge hose is used in the air conditioning system to transport refrigerant from the compressor to the condenser. It addresses several common issues:

  • Leaks caused by worn or damaged discharge hoses
  • Reduced A/C efficiency due to improper refrigerant flow
  • Failure of original hoses due to material degradation
  • Compatibility problems with aftermarket hoses lacking proper fittings
  • Maintaining system integrity with included O-rings and fittings

Installation Notes and Tips

  • Ensure the vehicle is compatible: Mercedes-Benz C300, C350, E300, E350, GLK300, GLK350
  • Verify that the refrigerant type is R134a before installation
  • Use the included green O-rings to prevent leaks and ensure a proper seal
  • Check the P-nut fitting for secure attachment on the suction end
  • Installation should be performed by a qualified technician to maintain system integrity

Quality Assurance and Warranty

Four Seasons products are engineered to meet or exceed original equipment standards. The Hose Assembly 66318 is an OE replacement part, ensuring compatibility and reliability. The product includes all necessary fittings and seals to maintain system performance. Warranty details should be confirmed with the product documentation or supplier, as they may vary.

BrandFour Seasons
Part Number66318
PositionHose Assembly
Bracket?w/o Bracket
Component TypeDischarge Line
DescriptionHose Assemblies
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum / Rubber
Muffler?w/o Muffler
O-Ring A Number/Desc[24649] / Green O-Ring
O-Ring B Number/Desc[24677] / Green O-Ring
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port?w/o Service Port
Suction End TypeP-Nut Fitting
Switch Included?Not Included

This part fits 13 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011Mercedes-BenzC3003.5LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2011Mercedes-BenzC350N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2010Mercedes-BenzC3003.0LV6N/ADischarge Line; From Compressor; Hose Assembly
2010Mercedes-BenzC3003.5LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2010Mercedes-BenzC350N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2010Mercedes-BenzE3003.5LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2010Mercedes-BenzE350N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2010Mercedes-BenzGLK300N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2010Mercedes-BenzGLK350N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2009Mercedes-BenzC300N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2009Mercedes-BenzC350N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2008Mercedes-BenzC300N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2008Mercedes-BenzC350N/ACompatible with various vehicles A/C refrigerant discharge hose; 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:

204830121521121566318787693A82817ME2048301215

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