R134a AC Service Port Caps 10-Pack – 13mm & 16mm Charging Caps
R134a AC Service Port Caps 10-Pack – 13mm & 16mm Charging Caps
Keep your vehicle's air conditioning system sealed and protected with this 10-piece R134a AC Service Port Cap Set. Designed specifically for R134a refrigerant systems, these color-coded caps provide a secure, dust- and moisture-free seal on both the high-side and low-side service ports — helping maintain system integrity and preventing refrigerant leakage.
The set includes 5 red caps (high-side port, 16 mm) and 5 blue caps (low-side port, 13 mm), making it easy to identify each port at a glance. Each cap features a built-in rubber seal for a reliable, airtight fit every time.
Key Features
- 10-Piece Value Set: 5 red high-side caps (16 mm) + 5 blue low-side caps (13 mm)
- Built-In Rubber Seal: Each cap includes an integrated rubber seal for an airtight closure
- Color-Coded Design: Red for high-side, blue for low-side — quick and error-free identification
- Durable Construction: Made from sturdy plastic with a rubber seal insert for lasting performance
- Universal R134a Fit: Compatible with standard R134a air conditioning service ports found on most passenger vehicles
- Protects System Components: Helps keep dirt, debris, and moisture out of AC charging ports
Product Specifications
- Material: Plastic body with rubber seal
- Red Caps (High Side): 16 mm — Qty: 5
- Blue Caps (Low Side): 13 mm — Qty: 5
- Total Quantity: 10 caps
- Compatibility: R134a AC service systems
- Vendor: Qme
Why You'll Love These Caps
Whether you're a professional technician or a DIY car enthusiast, having spare AC port caps on hand is essential. These caps are a simple, affordable way to protect your air conditioning system's service ports from contamination between maintenance intervals. The included rubber seals ensure a snug, secure fit without risk of slippage or air infiltration.
For more guidance on automotive AC system maintenance and refrigerant safety, visit the U.S. EPA's Motor Vehicle Air Conditioning Refrigerant information page.
Learn more: Automotive air conditioning
Frequently Asked Questions
Q: What are R134a AC service port caps used for in a car?
A: R134a AC service port caps seal the high-side and low-side charging ports on your vehicle's air conditioning system. They keep dirt, dust, and moisture out of the ports, helping maintain the integrity of the AC system between service intervals. This 10-piece set includes 5 red caps (16 mm high-side) and 5 blue caps (13 mm low-side).
Q: What material are these R134a AC port caps made from?
A: Each cap is constructed from durable plastic with a built-in rubber seal insert. The rubber seal creates an airtight closure on the service port, providing a secure and reliable fit for R134a air conditioning systems.
Q: Will these AC caps fit my vehicle's air conditioning system?
A: These caps are designed to fit standard R134a refrigerant service ports, which are found on the majority of passenger cars and light trucks. The red caps fit the 16 mm high-side port, and the blue caps fit the 13 mm low-side port. Always verify your vehicle's port size before installation.