Top 8 3/8 Inverted Flare Fittings – Automotive Replacement Fuel System Fittings

As an Amazon Associate I earn from qualifying purchases.

1. Plews & Edelmann


Edelmann 822560 Brass 5/16" Inverted Flare X 3/8" Hose 90 Degree Elbow Fitting

Plews & Edelmann #ad - Use in temperatures ranging from -40 F to +250 F, and working pressures up to 60 PSI. 5/16 inch inverted flare X 3/8 inch hose. Ideal for use on small engine fuel and oil lines, vacuum advance systems, and evaporative emissions control systems. Brass two piece 90 degree male elbow allows use in tight spaces as well as positioning of inlet exactly where you need it. Designed for use with standard multi-purpose hose and hose clamps.
BrandPlews & Edelmann #ad
ManufacturerEdelmann #ad
Height0 Inches
Length0 Inches
Weight0.09 Pounds
Width0 Inches
Part Number822560

2. The Stop Shop


The Stop Shop Inverted Flare Tube Nut for 3/8" Tube 5/8-18 Threads Pack of 12

The Stop Shop #ad - Plated for corrosion resistance. 5/8-18 threads standard 3/8" tube fitting size. Standard Steel. For 3/8" Tube. Most common SAE inverted flare sizes.
BrandThe Stop Shop #ad
ManufacturerThe Stop Shop #ad
Part NumberF202

3. Allstar


Allstar ALL50133 Brass 3/8" Inverted Flare Union Brake Line Adapter Fitting , Pack of 4

Allstar #ad - Style is a 3/8 inch inverted flare union and is a straight style fitting. Sold in one set of 4 pieces. If you don't see what you need, Allstar also carries a large and wide selection of quality fittings for most automotive plumbing needs. Brake line adapter fitting is made from quality brass.
BrandAllstar #ad
ManufacturerAllstar Performance #ad
Height0.85 Inches
Length3.5 Inches
Weight0.27 Pounds
Width4.45 Inches
Part NumberALL50133
Warranty90 day



JEGS 63248 Brass Adapter Fitting 3/8 in. NPT x 5/8 in. -18 Inverted Flare Female

JEGS #ad - Npt to 5/8 in. Hard Line. 3/8 in. Sold individually jegs 63248join a national pipe thread npt female end to a male inverted flare fitting with the JEGS brass adapter fitting. 18 inverted Flare Female. This piece features a male NPT end along with a female inverted flare simplifying your plumbing. Fits 3/8 in.
BrandJEGS #ad
ManufacturerJEGS #ad
Height1 Inches
Length0.75 Inches
Weight1 Pounds
Width0.75 Inches
Part Number63248

5. MuHize


MuHize Brake Line Unions, 10 PCS Brass Inverted Flare Brake Line Unions 3/8", 24 Threads Assortment for 3/16" Brake Line Tube Fittings

MuHize #ad - Widely application - muhize 3/8" - 24 threads fittings commonly fits for regular inverted flare/ double flare sizes for 3/16 inch brake lines tube. Note: the unions are 3/8"-24 threads special for regular 3/16 inch tube fitting size.

100% brand new & made from excellent materials, and good contact. Inverted flare union- any 2 3/16 inch brake lines can be easy to joined with Muhize unions. The sizes for unions are 3/8"-24 threads, which is the regular fitting size for 3/16 inch tube. Professional - muhize focus on outstanding features and benefits of braking line. Operating temperatures range: -53- 121 degrees C -65 to 250 degrees F. Package include - 10 x heavy guty brass 3/8"-24 threads unions. Please check before shopping! Higher quality - muhize brake line fittings are made of durable brass with unique rust corrosion proofing technology.
BrandMuHize #ad
ManufacturerMuHize #ad
Part NumberMUBRAKE-UNION10-316
Model3/8" - 24 Threads for 3/16" Brake Line

6. Eastyard


Eastyard 15 Pieces 3/8 Inch-24 Threads Brake Fuel Line Fittings Assortment Brass Inverted Flare Brake Assortment for 3/16 Inch Tube Includes 5 Pieces Unions 10 Pieces Nuts

Eastyard #ad - If you have any questions with the product, we can provide technical support. 15 pcs brake line fittings assortment for 3/16" Tube in total.

Material: made of high quality brass, ductile at high temperature and has low magnetic attraction, durable and sturdy to serve for long time. Size: both the unions and nuts is metric 3/8 regular 3/16 inch tube fitting size with a thread pitch of 24. Qulity assurance: these tubes unions are good fittings to share with your family and friends. Brake line fittings: 10 pieces 3/8" tube nuts and 5 pieces 3/8” Unions. Inverted flare union: These unions connected with the nuts of 3/16 inch tube fittings perfectly.
BrandEastyard #ad
ManufacturerEastyard #ad
Height0.4 Inches
Length5.9 Inches
Width4.72 Inches
Part NumberTAC0031



4LIFETIMELINES Steel Tube Nut, 10/bag, 3/8 5/8-18 Inverted

4LIFETIMELINES #ad - Works with steel, copper nickel, copper coated steel, pvf-coated, and stainless steel lines. Lifetime warranty included on all products purchased from 4Lifetimelines. Our brake line tube nuts are made with unmatched superior quality. Includes 10 steel tube nut, 3/8, 5/8-18 Inverted, per bag. Plated for corrosion resistance.
Manufacturer4LifetimeLines #ad
Height0.5 Inches
Length7 Inches
Width4 Inches
Part NumberLTN15



JEGS Straight Brass Fitting | 5/16 “ Inverted Flare 1/2 “-20 Thread x 3/8 “ Hose | Made In USA | 1 Per Package

JEGS #ad - One per package with other sizes available separately. Constructed from brass for strength and long life. Made in usa with high quality components and installation. Specifications: 5/16 “ inverted flare 1/2 “-20 thread x 3/8 “ hose. Complete your plumbing project with this fitting.
BrandJEGS #ad
ManufacturerJEGS #ad
Height0.8 Inches
Length3.5 Inches
Weight1 Pounds
Width1.6 Inches
Part Number51995