Tubing Flares?

Tiny
KISSANGANI
  • MEMBER
  • 1996 TOYOTA AVALON
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
In the attached picture, can you please tell me what kind of tubing flares are #1 and #2?

Thank you!
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Tuesday, September 16th, 2025 AT 11:26 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Sure, the #1 flare is a normal stepped flare designed to help keep fluid lines from coming off when held by a clamp. The #2 flare is step one of a double flare used for brake fluid systems, here is a video of a brake line flare to its completion.

https://www.youtube.com/watch?v=sO43p4ZFUiM

Please go over this guide and get back to us.
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Tuesday, September 16th, 2025 AT 12:07 PM
Tiny
KISSANGANI
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  • 8 POSTS
Actually, #2 is a bubble flare. I'm also quite familiar on how a double flare looks like. However, I don't recognize the #1 flare. You are right that it was attached to a fluid line and held by a clamp, which I suppose is to help the fluid line from coming off as you mentioned. So, what is the actual name for the # 1 flare? You referred to it as a "stepped flare", but I couldn't find anything under that name when I researched it. Is there another name for it? I'm familiar on how to make a single, double, and bubble flare and I have the tool as well, but how can I make a flare like #1? What tool would I need for that?
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Tuesday, September 16th, 2025 AT 3:46 PM
Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
The first flare is what GM just calls it a line retention flare but it's really just a partially formed bubble flare. I make them using the same inverter dies used to form a bubble but don't fully press the dies in like you would for a full bubble flare.
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Tuesday, September 16th, 2025 AT 4:50 PM

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