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Hot Rod AN LLC

Hard line tube fittings to AN Male fittings

Hard line tube fittings to AN Male fittings

$13.99 USD
$13.99 USD
Sale Sold out
Shipping calculated at checkout.

sku-43549156671558

Hardline tube size
AN Male size

Low stock: 2 left

Hardline Tube to AN Male Adapters

Adapt factory hardlines to AN fittings for clean, leak-free fuel systems. Works with 1/4", 5/16", 3/8", and 1/2" hardline. Rated to 250 PSI when properly installed.

  • Convert OEM hardlines to AN in minutes—no guesswork, no cobbled adapters.
  • Perfect for EFI conversions, LS/LT swaps, and fresh fuel plumbing.
  • Clean, serviceable connections that pair with Hot Rod AN PTFE hose and fittings.
  • Common hardline sizes supported: 1/4", 5/16", 3/8", 1/2".
  • Pressure rating: up to 250 PSI when properly installed.

Where these adapters shine

  • Fuel sending unit outlets to AN for modern hose routing.
  • Factory feed/return lines to AN when upgrading to PTFE hose.
  • Carb-to-EFI conversions (regulator, filter, return line updates).
  • LS/LT swaps: integrate OEM truck/car hardlines with AN systems.
  • External fuel filter/regulator installs with Hardline smooth tube for rubber hose

Specs

Hardline sizes 1/4", 5/16", 3/8", 1/2"
Outlet AN male (select size in options)
Pressure Up to 250 PSI (proper install required)
Primary use Fuel system plumbing
Install tips:
  1. Measure hardline OD (outside diameter) and select the matching adapter.
  2. Cut the tube square and de-burr inside and outside (critical for sealing).
  3. Follow the adapter’s assembly order (nut/sleeve/compression as applicable) and tighten per spec.
  4. After assembly, pressure-test the system before driving.

Important: For fuel system use only. Not for brake lines or power steering.

Lifetime Warranty Lifetime Warranty
Free Shipping Free Shipping $99+ (USA)
Expert Support Real Expert Support

FAQs

How do I pick the right size?
Match the adapter to your hardline’s measured OD (1/4", 5/16", 3/8", or 1/2"). Then select the AN outlet size to fit your hose/fitting system.
Will this work for an LS swap?
Yes—these are ideal for connecting OEM hardlines to AN for modern fuel systems. For a complete plumbing solution, see our LS swap fuel line kits.
What pressure can it handle?
Up to 250 PSI when properly installed and verified by a pressure test.
What hose should I pair with this?
Use Hot Rod AN PTFE hose bundles and AN hose ends for a complete, ethanol-compatible EFI setup.
Any installation cautions?
Always cut/deburr properly, assemble in the correct order, tighten to spec, and pressure-test. Do not use for brake or power steering circuits.
Warranty
Backed by our lifetime warranty against manufacturing defects. Contact support with your order number and photos for a quick resolution.
Shipping
Fast shipping from the USA. Free shipping on orders $99+ (USA). Rates and options shown at checkout.
Returns
Hassle-free returns on new, unused items in original packaging per our Returns Policy.
Quality
Purpose-built for fuel system use and designed to pair with Hot Rod AN PTFE hose and AN fittings for leak-free performance.

 

Shipping & Returns

Most items can be returned within 30 days.

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