EVIL ENERGY Male 90 Degree 3/4/6/8/10/12AN Bulkhead Full Flow Fitting Adapter Aluminum with 3/4/6/8/10/12AN Nut Black

90 Degree AN Bulkhead Full Flow Fitting Overview

EVIL ENERGY 90 Degree Bulkhead Full Flow Fitting — the clean way to route fuel lines through firewalls, fuel cells, and custom panels. CNC-machined from 6061-T6 aluminum with a black anodized finish, this fitting features an enlarged internal bore (Full Flow) that reduces internal restriction compared with conventional bulkhead fittings found in standard bulkheads. The 37° AN flare seat provides a metal-to-metal seal rated to 1500 PSI across a -63°F to 252°F temperature range. Includes a matching AN nut.

Key Features

• Available in 3AN to 12AN sizes: Precision pass-through fitting with 3/8-24 UNF thread and full flow design. Routes fuel lines clean through firewalls, fuel cells, and panels without restricting flow.
• 1500 PSI Max Working Pressure: Rated for high-pressure fuel systems with an operating temperature range of -63°F to 252°F — handles everything from cold starts to sustained heat soak.
• 6061-T6 Aluminum — Anodized Black: CNC-machined from aerospace-grade billet aluminum with a durable black anodized finish that resists corrosion and looks clean under the hood.
• 37° AN Flare Seal: Precision-machined flare angle provides a metal-to-metal seal without gaskets or crush washers. Delivers reliable, leak-free performance in fuel delivery, return lines, and custom fuel system builds.
• Multi-Size Available: Also offered in 4AN, 6AN, 10AN, and 12AN sizes. Use the ASIN reference table above to select the right bulkhead fitting for your fuel cell, surge tank, or firewall pass-through.

Where does a 90 Degree bulkhead fitting go?

The 90-degree bulkhead fitting is purpose-built for clean firewall and panel pass-throughs. Route fuel lines through your firewall, fuel cell lid, surge tank, or custom panel with a single sealed fitting — no more drilling oversized holes or fighting hose routing angles. The 90° orientation mounts flat against a panel and exits at a right angle, keeping your fuel system lines tidy and stress-free.

Full Flow vs Standard — what's the difference?

Full Flow bulkhead fittings feature an enlarged internal bore that matches or exceeds the AN hose ID. Unlike standard bulkheads that neck down and restrict flow, the full flow design maintains a consistent cross-sectional area through the fitting. This matters for high-volume fuel pumps, E85 conversions, and boosted applications where maintaining consistent fuel flow is critical.

How Do You Choose The Right AN Bulkhead Fitting Size?

Why Choose EVIL ENERGY 90 Degree Bulkhead Full Flow Fitting?

• Full Flow Internal Bore: No neck-down restriction. The bore diameter matches your AN hose ID, so your fuel pump's full output reaches the rail without a bottleneck at the bulkhead.
• CNC-Machined 6061-T6 Billet: Every fitting is machined from solid bar stock — not cast, not molded. Consistent thread pitch, clean flare seats, zero porosity.
• 37° AN Flare Metal-to-Metal Seal: No o-rings to swell, no gaskets to crush. The 37° flare mates with any standard AN hose end for a leak-free connection rated to 1500 PSI.
• Clean Firewall & Panel Routing: The 90° design lets you mount flush against any flat surface and route the hose at a right angle — cleaner than a straight bulkhead + 90° adapter stack-up.
• Backed by EVIL ENERGY: Free technical support, 30-day returns, and line-of-sight pricing. Browse our full bulkhead line for straight, 45°, and tee configurations.

Where Can You Use A 90 Degree Bulkhead Fitting?

This bulkhead fitting is commonly used for fuel cells, firewall pass-throughs, engine bay routing, hose extensions, and custom fluid systems. The 90 degree design helps create cleaner installations where space is limited.

Brand Summary

Return Reasons

1. Quality Issues: Provide photos/videos; we cover return shipping.
2. Wrong Item Ordered: Buyer covers return shipping; email within 30 days.
3. Change of Mind: Buyer covers return shipping; email within 30 days.
4. Shipping Damage: Inspect packages; do not sign for damaged items.
5. Incorrect Item Shipped: Contact within 7 days.

Price Protection Policy

Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.

Disclaimer

EVIL ENERGY reserves the right to interpret, modify, or terminate this policy in accordance with applicable laws and regulations.

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