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Steel Brake System Adapter, -04 Male JIC 37 deg Flare To 3/8-24 Male 42 deg Inverted Flare, Straight

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Description & Features

Designed for brake system applications, this Steel Brake System Adapter, -04 Male JIC 37° Flare To 3/8-24 Male 42° Inverted Flare, Straight from Eaton Aeroquip provides a reliable transition between two common brake line thread and flare configurations. The straight body design keeps routing clean and compact where space is limited.

The -04 male JIC 37° flare end mates with standard JIC hydraulic fittings, while the 3/8-24 male 42° inverted flare end connects to typical automotive and industrial brake line fittings. Steel construction delivers the durability required in brake circuit environments. Catalog number C1EB60 applies to this part within the Eaton Aeroquip product line.

SKU: FBM2927

Supplier Part Number (MPN): FBM2927

Alternate Part Numbers: C1EB60, FCM2927

Specifications

Adjustable End
No
Brand
Danfoss Power Solution (Aeroquip High Performance)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
Fitting Dash Size
-04
Length
1.14
Supplier Part Number
FBM2927
Thread 2
3/8-24
Alternate Part Numbers
Alternate Part Number C1EB60, Alternate Part Number FCM2927, Alternate Part Number MINO-00015X26458
Product Weight
6.52 lbs

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Product Questions & Answers (3)

Question by: Wayne C on Oct 10, 2025, 1:11 PM
got a brake line setup with a -04 JIC male on one side. will this adapter let me hook into a 3/8-24 inverted flare port without any goofy angles?
Answer by: Customer Support on Oct 11, 2025, 3:29 PM
Built for brake system hookups, it bridges a -04 male JIC 37 degree flare end over to a 3/8-24 male 42 degree inverted flare end in a straight body, so you are converting both the thread style and the flare type without adding a bend.
Question by: Shawn T on Dec 17, 2025, 5:54 PM
Will this adapter work to hook up new brake lines on my '67 Mustang?
Answer by: Customer Support on Dec 19, 2025, 8:14 AM
This adapter is designed to provide the correct connection between -04 male JIC 37° flare fittings and 3/8-24 male 42° inverted flare fittings, which are often found on automotive brake lines.
Question by: Dale J on Oct 24, 2025, 4:10 PM
got a brake line on an older rig that runs 3/8-24 inverted flare on one end and JIC on the other, this the right adapter to bridge that gap?
Answer by: Customer Support on Oct 26, 2025, 6:37 AM
That's exactly what this fitting is built for. One end is a -04 male JIC with a 37 degree flare, and the other is a 3/8-24 male with a 42 degree inverted flare. Those two thread and flare configurations show up together pretty often in brake line work where hydraulic and automotive hardware meet at the same junction. The straight body keeps things tidy in tight spaces too, so you're not fighting the routing.