The Genuine 646-075 Automotive Vacuum Caps are designed to securely seal unused vacuum ports and hoses, helping prevent vacuum leaks that can affect engine performance, idle quality, and emissions. This 4-piece assortment includes commonly used vacuum cap sizes, making it a convenient solution for automotive maintenance, repairs, and custom engine projects.
Manufactured from durable automotive-grade rubber or vinyl material, these vacuum caps are resistant to heat, oil, and under-hood operating conditions. They provide a snug, airtight fit to help protect open vacuum fittings from dirt, moisture, and contaminants while maintaining proper vacuum system operation.
This assortment includes vacuum caps in 1/8", 3/16", 1/4", 5/16", and 3/8" sizes for a wide range of automotive applications. Ideal for replacing worn or cracked vacuum caps, they offer reliable sealing performance and quick installation without special tools.
Key Features
-
Airtight Seal: Protects unused vacuum ports from dirt and moisture.
-
Easy Installation: Push-on design for quick replacement without tools.
-
Assorted Vacuum Caps: Covers common automotive vacuum hose sizes.
-
Durable Construction: Resistant to heat, oil, and under-hood conditions.
-
OEM-Style Replacement: Ideal for maintenance, repairs, and restoration projects.
-
Prevents Vacuum Leaks: Helps maintain proper engine performance and idle quality.
- Versatile Applications: Suitable for vacuum lines, manifolds, carburetors, and emission systems.
Specifications
-
Quantity: 4 Pieces
- Part Number: 646-075
- Sizes: 1/8", 3/16", 1/4", 5/16", 3/8"
-
Material: Automotive-Grade Rubber/Vinyl
- Product Type: Automotive Vacuum Cap Assortment


