Four Seasons 26009 A/C System Valve Core and Cap Kit

AC System Seal Kit for Ford and Dodge Applications

Four Seasons 26009 is an AC system seal kit built around cap and valve components for service work on automotive air conditioning systems. It is listed for R12 and R134A refrigerant applications and uses black plastic caps in a cap-and-valve kit style.

Compatible With Ford Bronco Sport, Ford Edge, Ford Escape, Ford Explorer, Ford F-150, Ford Mustang, Ford Ranger, Ford Transit models, and Dodge Dart applications where the listed AC service ports and valve cores match.

Key Features

• Four Seasons AC System Seal Kit, part number 26009
• Cap and valve kit style for A/C service port sealing
• Black plastic cap material and color
• Supports R12 and R134A refrigerant systems
• Backed by Four Seasons’ mobile A/C experience and product testing
• Cross-reference: 407835, A79853

Product Details

Four Seasons 26009 is part of the AC System Seal Kit line, focused on sealing and service-port retention for automotive HVAC systems. The kit is intended for vehicles that use the listed cap and valve core configuration, including Ford Edge, Ford Escape, Ford Explorer, Ford F-150, Ford Mustang, Ford Ranger, and Ford Transit-150/250/350 platforms, along with select Dodge Dart applications. If you are replacing worn, missing, or damaged A/C service caps and valve-core seals, this part number provides a direct service solution for the specified fitments.

This part cross-references Monroe Shocks & Struts (e.g., 407835, A79853) for the same application.

Common Issues This Part Can Address

• Missing or cracked A/C service port caps
• Damaged valve-core seal retention at the service port
• Loss of protection for A/C service fittings from dirt and moisture
• Service-port sealing concerns during HVAC maintenance
• Replacement needs on Ford and Dodge vehicles with matching port design

Installation Notes and Tips

Verify the refrigerant type and service-port style before ordering. Match the existing cap and valve-core configuration on the vehicle, and confirm fitment for your exact year, make, and model. For best results, inspect the service port threads and sealing surfaces before installation and replace any visibly damaged components during A/C service.

Quality Assurance

Four Seasons states that its products are engineered and tested for long service life and are supported by more than 50 years of mobile A/C experience. Part number 26009 is built to meet the demands of routine HVAC service on the listed Ford and Dodge applications.