For a reliable seal and long-lasting performance, look no further than the Block Type Expansion Valve Gasket from Four Seasons Global Parts Distributors LLC. This gasket offers a direct replacement of all O-rings in a vehicle's A/C system, saving you time and money. Part number 24149 is designed to meet or exceed OE fit, form, and function, and is application specific. Durability has been tested on every new design to ensure quality and reliable performance. The gasket is suitable for R12, R134a and R1234yf systems, and with its patented Rapid Seal Kit, you get all the O-rings you need for this application in one convenient kit. With Four Seasons, you can trust that you’re getting a quality product every time.