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Main ST Collective AN Caps & Plugs – Multiple Sizes & Pack Quantities Available
3AN–12AN | JIC Fitting Protection | Caps & Plugs for AN Fluid Systems
The Main ST Collective AN Caps & Plugs are a must-have solution for protecting AN/JIC fittings from dirt, debris, dust, and moisture during storage, transport, fabrication, or assembly. Designed for automotive, racing, hydraulic, and fabrication environments, these threaded protective caps and plugs help maintain clean, contamination-free fluid systems.
This variant listing allows you to select both the AN size and pack quantity needed for your project, shop, or production environment.
About Main ST Collective
Main ST Collective is the in-house hardware and parts brand of Main Street Eshop, built for automotive enthusiasts, racers, fabricators, and professional technicians. Our products are engineered to deliver dependable OEM-style quality with real-world performance in mind.
From race car plumbing and fabrication hardware to shop essentials and automotive fasteners, Main ST Collective products are designed to keep projects moving in the garage, fabrication shop, or at the track.
About Main Street Eshop
Main Street Eshop is your trusted source for automotive parts, race hardware, shop supplies, and performance fabrication components. Serving enthusiasts, race teams, mechanics, and builders nationwide, Main Street Eshop provides quality products for street, off-road, drift, drag racing, road racing, and custom fabrication applications.
Available VariantsAN Sizes Available
- 3AN Caps
- 3AN Plugs
- 4AN Caps
- 4AN Plugs
- 6AN Caps
- 6AN Plugs
- 8AN Caps
- 8AN Plugs
- 10AN Caps
- 10AN Plugs
- 12AN Caps
- 12AN Plugs
Pack Sizes Available
- 5 Pack
- 10 Pack
- 25 Pack
- 50 Pack
- 100 Pack
- 250 Pack
- 500 Pack
✔ Select your desired size and quantity from the dropdown menu before checkout.
Key Features
✔ Designed for AN / JIC 37° flare fittings
✔ Protects fittings from dust, dirt, and moisture
✔ Helps maintain clean fluid systems and prevent contamination
✔ Ideal for storage, transport, assembly, and maintenance
✔ Knurled exterior for easy installation and removal
✔ Bright red finish for high visibility in the shop or garage
✔ Perfect for masking during painting and plating processes
✔ Great for automotive, racing, hydraulic, and fabrication use
Materials & ConstructionCaps (CD Series)
✔ Material: Low-Density Polyethylene (LDPE)
✔ Threaded design for secure sealing on JIC fittings
✔ Service Temperature: -94°F to 175°F (-70°C to 79°C)
Plugs (PD Series)
✔ Material: HDPE / LDPE Blend
✔ Designed for low-pressure sealing with finger tightening
Service Temperatures:
- LDPE: -94°F to 175°F
- HDPE: 0°F to 215°F
Size & Fitment Information
Designed to fit standard AN / JIC 37° flare fittings commonly used in:
✔ Fuel systems
✔ Oil systems
✔ Brake systems
✔ Hydraulic systems
✔ Transmission coolers
✔ Fluid transfer systems
Compatible AN Sizes:
Ideal Applications
✔ Automotive fuel system protection
✔ Racing and motorsports plumbing
✔ Hydraulic and fluid transfer systems
✔ Hose fabrication and assembly
✔ Shop storage and organization
✔ Painting, coating, and plating masking
✔ Transport protection for fittings and hoses
Buyer Notes
✔ Designed for protection and low-pressure sealing only
✔ Not intended for high-pressure fluid operation
✔ Verify correct AN size before purchase
✔ Ideal for temporary sealing and contamination prevention
Why Choose Main ST Collective?
✔ Built for automotive and racing environments
✔ Professional-quality shop and fabrication hardware
✔ Reliable OEM-style fit and function
✔ Organized, reusable, and easy to install
✔ Backed by Main ST Collective and Main Street Eshop
What You Receive
You will receive:
✔ Selected quantity of Main ST Collective AN Caps or AN Plugs in your chosen size and pack quantity.
Keep your fittings clean, protected, and ready for installation with Main ST Collective AN Caps & Plugs, proudly supplied by Main Street Eshop—quality hardware for racers, fabricators, and automotive enthusiasts.
