Choosing reliable 8AN and 6AN fittings is essential for secure, leak-free connections in high-performance fuel and hydraulic systems. This guide highlights top 8AN fittings and associated adapters, including straight, 90-degree, and hardline options from EVIL ENERGY, designed for aluminum, PTFE, and braided hose applications. Each product is evaluated for compatibility, sealing performance, and working pressure to help you select components that fit your setup and maintenance goals.
Product Overview
| Product | Brand | Type | Key Notes |
|---|---|---|---|
| EVIL ENERGY 8AN Male to 3/8″ NPT Fitting Straight Aluminum Black 2PCS | EVIL ENERGY | 8AN To 3/8″ NPT Fitting | 6061-T6 aluminum, anodized black; 3/4-16 UNF 8AN thread; 37° flare seal, 60° NPT seal |
| EVIL ENERGY 8AN PTFE Hose End Fitting 90 Degree Black for PTFE Hose Only 2PCS | EVIL ENERGY | 8AN PTFE Hose End Fitting | 3/4-16 UNF; designed for PTFE fuel line; 1500 PSI working pressure; wide temperature range |
| EVIL ENERGY 6AN Hose End Fitting 90 Degree Swivel for CPE Braided Hose Black 2PCS | EVIL ENERGY | 6AN Swivel Hose End | 9/16-18 UNF; 37° flare seal; works with stainless or nylon braided hoses; 6061-T6 aluminum |
| EVIL ENERGY 6AN Hose End Fitting Straight Swivel for CPE Braided Hose Black 4PCS | EVIL ENERGY | 6AN Swivel Hose End | 9/16-18 UNF; 37° flare seal; compatible with CPE braided hose; 6061-T6 aluminum |
| EVIL ENERGY 6AN Male to 5/16″ Hardline Compression Fitting Adapter Aluminum Black 2PCS | EVIL ENERGY | 6AN To 5/16″ Hardline Adapter | 9/16 UNF; fits 5/16″ hardline; aluminum fitting with brass ferrule |
Note: This summary focuses on fittings commonly used with 8AN and 6AN lines, including hose ends and hardline adapters suitable for high-pressure automotive systems.
EVIL ENERGY 8AN Male To 3/8″ NPT Fitting
Size and material: 8AN to 3/8″ NPT, 6061-T6 aluminum with black anodized finish. The flare side seals at 37 degrees, while the NPT thread uses a 60-degree taper. This combination provides robust sealing for fuel and oil lines. Suitable for high-pressure applications where both AN and NPT connections are required.
EVIL ENERGY 8AN PTFE Hose End Fitting 90 Degree
Application and compatibility: Designed for PTFE fuel lines, 8AN PTFE fittings use a 3/4-16UNF thread. Working pressure reaches up to 1500 PSI, with a wide temperature range to handle extreme conditions. A precise 37-degree flare on the AN side helps maintain a tight seal in performance setups.
EVIL ENERGY 6AN Hose End Fitting 90 Degree Swivel
Swivel design and compatibility: The 6AN 90-degree swivel fitting uses a 9/16-18 UNF thread. It seals with a 37-degree flare and is intended for stainless steel braided and nylon braided hoses. Constructed from 6061-T6 aluminum alloy for durability in demanding environments.
EVIL ENERGY 6AN Hose End Fitting Straight Swivel
Straight swivel variant provides a flexible routing option for braided hoses. With a 9/16-18 UNF thread and 37-degree flare seal, this aluminum 6061-T6 fitting is designed to resist leaks in high-pressure lines while offering convenient orientation for tight engine bays.
EVIL ENERGY 6AN Male To 3/8″ Hardline Compression Fitting
Hardline compatibility and sealing: The 6AN male flare to 3/8″ hardline adapter uses a 9/16 UNF thread. It fits 3/8″ OD hardline and features an AN flare seal at 37 degrees. Aluminum body with brass ferrule combines strength and reliability for rigid fuel lines.
EVIL ENERGY 6AN Male To 5/16″ Hardline Compression Fitting
This adapter supports 6AN to 5/16″ hardline, with a 9/16 UNF thread and a 37-degree flare seal. The combination of aluminum body and brass ferrule is designed to withstand vibration and high-pressure conditions common in performance builds.
EVIL ENERGY 6AN Quick-Disconnect EFI Fuel Rail Fitting
Quick-disconnect EFI design: The 6AN thread is 9/16-18 UNF with a 3/8″ ID on the screw. Sealed at 37 degrees to prevent leaks under pressure up to 1500 PSI. Suitable for EFI fuel rails and high-performance installations requiring rapid or modular connections.
Buying Guide: Key Considerations For Selecting 8AN Fittings
- Compatibility: Decide between hose-end fittings (braided or PTFE hoses) and hardline adapters. PTFE-specific fittings are optimized for PTFE lines, while braided hose fittings suit stainless or nylon braids.
- Thread Size And Type: Common AN sizes include 8AN and 6AN with UNF threads (e.g., 3/4-16 UNF for 8AN, 9/16-18 UNF for 6AN). Verify thread pitch and compatibility with the counterpart (NPT, flare, or compression).
- Sealing Angles: AN flare seals typically use 37 degrees; NPT seals rely on taper angles like 60 degrees. Ensure the mating components use matching sealing methods to avoid leaks.
- Material And Finish: Aluminum (6061-T6) is standard for light weight and corrosion resistance. Anodized black finishes provide additional wear resistance but confirm chemical compatibility with fuels and oils.
- Pressure And Temperature: Check rated working pressures (often up to 1500 PSI for these fittings) and operating temperature ranges to ensure reliability under hot engine bay conditions.
- Hose Type And Compatibility: When selecting hose ends, confirm compatibility with braided stainless/nylon hoses or PTFE lines. Swivel fittings help reduce line twist and stress during installation.
- Fitment With Hardlines: For hardlines, ensure correct outer diameter and ferrule compatibility. Brass ferrules and aluminum bodies can differ in conductivity and vibration resistance.
- Installation Considerations: Use appropriate thread sealants or PTFE tape where recommended. Avoid overtightening to prevent thread damage and leaks.
- Future Upgrades: If you anticipate changing to different hose sizes or radiators, consider versatile fittings with interchangeable ends.