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Flare Reducer, Male -8AN x -4AN, Black

Quick Overview

  • Flare reducer, -8 AN to -4 AN JIC male
  • Joins a -8 AN female to a -4 AN female
  • One-piece body, 37-degree flare both ends
  • No tape or sealant needed
  • E85 compatible, black anodized 6061-T6 aluminum

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Item #: ADF-8J4J

$4.26

per EACH (USD)
This is an obsolete Item
 
 
 In Stock & Ready to Ship

Flare Reducer, -8 AN to -4 AN JIC Male, Black

Steps a line from -8 AN to -4 AN between two female fittings.

The Racetronix ADF-8J4J is a one-piece flare reducer with a -8 AN JIC male (37° flare) on one end and a -4 AN JIC male on the other. Use it to join a -8 AN female hose end or swivel to a -4 AN one, so you can step a line down (or up) in size without an extra adapter.

Key features

  • -8 AN JIC male (37° flare) one end.
  • -4 AN JIC male (37° flare) the other end.
  • One-piece body, no swivel.
  • E85 compatible.
  • 6061-T6 aluminum, black anodized.
No tape or thread sealant

Both ends seal metal to metal on their 37° flares, not on the threads. Do not use Teflon tape or thread sealant on either end; it can stop the flare from seating and cause a leak.

Specifications

Part numberADF-8J4J
Large end-8 AN JIC male, 3/4"-16 thread, 37° flare
Small end-4 AN JIC male, 7/16"-20 thread, 37° flare
Material6061-T6 aluminum, black anodized
Fuel compatibilityGasoline and E85

Lookup chart

Every size in this series. This part is highlighted. Click a column heading to sort by it; click again to reverse.

Part numberLarge end (AN JIC male)Small end (AN JIC male)
ADF-4J3J-4 AN-3 AN
ADF-6J3J-6 AN-3 AN
ADF-6J4J-6 AN-4 AN
ADF-8J4J-8 AN-4 AN
ADF-8J6J-8 AN-6 AN
ADF-10J4J-10 AN-4 AN
ADF-10J6J-10 AN-6 AN
ADF-10J8J-10 AN-8 AN
ADF-12J6J-12 AN-6 AN
ADF-12J8J-12 AN-8 AN
ADF-12J10J-12 AN-10 AN
ADF-16J10J-16 AN-10 AN
ADF-16J12J-16 AN-12 AN
ADF-20J12J-20 AN-12 AN
ADF-20J16J-20 AN-16 AN

Frequently asked questions

What does it connect to?

A -8 AN female (37° JIC) fitting on one end and a -4 AN female fitting on the other: female hose ends, swivel couplers or female adapters. Both ends are male.

Do I need thread sealant or tape?

No. Both ends seal on their 37° flares. Sealant or tape can keep the flare from seating, and pieces of tape can get into the fuel system.

Is it E85 compatible?

Yes. It is made from 6061-T6 aluminum and black anodized, and works with gasoline and E85.

Questions and support

Not sure which fitting your build needs? Email [email protected] before you order.

Racetronix provides technical support to verified customers through our support forum, not by phone or email. Please request forum access when you place your order so your account is approved before your parts arrive. The forum is moderated, open 24/7, and holds a knowledge base going back to 1999.

© 2026 Racetronix. All rights reserved. | Part No: ADF-8J4J | Revision: Alpha