HomeHVAC > Gaskets and Sealing SystemsFour Seasons 26818 A/C System O-Ring and Gasket Kit
Part #: 26818

Four Seasons 26818 A/C System O-Ring and Gasket Kit

AC System Seal Kit
⚙️ 69 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦AC System Seal Kit
🚗Fitment: Ford, Lincoln, and Mercury, E-150, E-250, E-350 Super Duty, Econoline Van, Econoline Wagon, Transit Connect, Crown Victoria, Town Car, Grand Marquis, F-250 Super Duty, F-350 Super Duty, Transit, E-150 Econoline, and E-350 Econoline
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Reliable A/C System Seal Kit for Ford, Lincoln, and Mercury Vehicles

The Four Seasons AC System Seal Kit 26818 provides essential sealing components designed to maintain the integrity of your vehicle's air conditioning system. Engineered for select Ford, Lincoln, and Mercury models, this kit ensures a secure and leak-free A/C system.

  • Includes green rubber O-rings, metal spring O-rings, and green aluminum gaskets
  • Compatible with Ford Crown Victoria, E-150 Econoline, F-250 Super Duty, and more
  • Part number 26818 for precise identification and fitment
  • Designed to replace worn or damaged seals in automotive A/C systems
  • Part of the Four Seasons AC System Seal Kit product line for comprehensive sealing solutions

About the Four Seasons AC System Seal Kit Product Line

The AC System Seal Kit line by Four Seasons offers a range of sealing components tailored to various vehicle makes and models. This product line focuses on providing durable O-rings and gaskets made from quality materials such as green rubber and aluminum to ensure long-lasting performance. The 26818 kit is part of this line, specifically engineered to meet the sealing needs of Ford, Lincoln, and Mercury A/C systems.

Detailed Product Description

The Four Seasons AC System Seal Kit 26818 contains a selection of green rubber O-rings, metal spring O-rings, and green aluminum gaskets designed to restore and maintain the sealing integrity of your vehicle’s air conditioning system. These components are critical in preventing refrigerant leaks and ensuring optimal system pressure. The kit is compatible with a range of Ford, Lincoln, and Mercury vehicles including the Crown Victoria, E-150 Econoline, F-350 Super Duty, Grand Marquis, and Transit Connect models. Using this kit helps maintain the efficiency and reliability of your A/C system by replacing worn or damaged seals.

Common Applications and Issues Addressed

  • Sealing leaks in the A/C system caused by worn or damaged O-rings and gaskets
  • Preventing refrigerant loss to maintain proper cooling performance
  • Eliminating moisture and contaminants entering the A/C system
  • Reducing the risk of compressor damage due to leaks
  • Restoring system pressure for consistent air conditioning operation

Installation Notes and Tips

  • Ensure all old seals and gaskets are fully removed before installation
  • Lubricate new O-rings with appropriate refrigerant oil to prevent damage during assembly
  • Verify compatibility with your specific Ford, Lincoln, or Mercury model before installation
  • Follow manufacturer torque specifications when reassembling A/C components
  • Inspect all connections for leaks after installation and system recharge

Quality Assurance and Warranty

Four Seasons manufactures the AC System Seal Kit 26818 to meet industry standards for durability and performance. The materials used, including green rubber and metal spring O-rings along with green aluminum gaskets, are selected for their resistance to refrigerants and environmental factors. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in material and workmanship. Always consult product documentation for exact warranty terms.

BrandFour Seasons
Part Number26818
PositionAC System Seal Kit
DescriptionO-Ring & Gasket A/C System Seal Kit
MaterialGreen Rubbers O-Rings, Metal spring O-Rings, Green Aluminum Gasket
StyleO-Ring & Gasket Kit
TypeAC System Seal Kits

This part fits 69 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; AC System Seal Kit
2019FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; AC System Seal Kit
2018FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; AC System Seal Kit
2017FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; AC System Seal Kit
2016FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; AC System Seal Kit
2015FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; AC System Seal Kit
2014FordE-150N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2014FordE-250N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2014FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2014FordEconoline VanN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2014FordEconoline WagonN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2014FordTransit ConnectN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2013FordE-150N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2013FordE-250N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2013FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2013FordEconoline VanN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2013FordEconoline WagonN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2013FordTransit ConnectN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2012FordE-150N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2012FordE-250N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2012FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2012FordEconoline VanN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2012FordEconoline WagonN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2012FordTransit Connect2.0LL4N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2011FordCrown VictoriaN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2011FordE-150N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2011FordE-250N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2011FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2011FordEconoline VanN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2011FordEconoline WagonN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2011FordTransit Connect2.0LL4N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2011LincolnTown CarN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2011MercuryGrand MarquisN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2010FordCrown VictoriaN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2010FordE-150N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2010FordE-250N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2010FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2010FordEconoline VanN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2010FordEconoline WagonN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2010FordF-250 Super Duty6.8LV10N/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2010FordF-250 Super Duty5.4LV8N/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2010FordF-350 Super Duty6.8LV10N/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2010FordF-350 Super Duty5.4LV8N/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2010FordTransitN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2010FordTransit ConnectN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2010LincolnTown CarN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2010MercuryGrand MarquisN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2009FordCrown VictoriaN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2009FordE-150N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2009FordE-250N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2009FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2009FordTransitN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2009LincolnTown CarN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2009MercuryGrand MarquisN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2008FordCrown VictoriaN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2008FordE-150N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2008FordE-150 EconolineN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2008FordE-250N/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2008FordE-350 EconolineN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2008FordE-350 Super DutyN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2008FordTransitN/AO-Ring and Gasket Seal Kit; w/ Rear AC; AC System Seal Kit
2008LincolnTown CarN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2008MercuryGrand MarquisN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2007FordCrown VictoriaN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2007LincolnTown CarN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2007MercuryGrand MarquisN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2006FordCrown VictoriaN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2006LincolnTown CarN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit
2006MercuryGrand MarquisN/APlease confirm compatibility prior to installation of A/C System O-Ring and Gasket Kit.; AC System Seal Kit

* 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:

11126818132134226818801842A26818MT2721

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