Common street rod master cylinders quite often have 1/2"-20 and 9/16"-18 IFF inverted flare female outlets and many of you have asked for a way to get from them to 1/8" NPT female pipe thread. These brake line fittings give you many options to plumb your brakes.

CA Prop 65

Specifications

KEY SPECS
MFG. Part #	Select I.f. Size to see
Brand	Speedway Motors
Fitting End A	1/8" NPT Female
Fitting End B	Select I.f. Size to see
Angle	Straight
Material Type	Steel
Finish	Zinc Plated

GENERAL
Fitting Style	Adapter
Fitting Category	NPT to Inverted Flare
Color	Zinc
Sold in Quantity	Each

Ratings & Reviews

4.9

32 Reviews

Overall Assessment

Customers highly recommend the 1/8" NPT female to 9/16" I.F. Adapter, praising its perfect fit and usefulness in various automotive tasks, such as connecting brake master cylinder ports and pressure-activated brake light switches. They appreciate its practicality in performing specific functions they could not achieve with other products. Shoppers highlight the high-quality material, noting its ability to handle torque well and prevent leaks. Also, ils rarity in the market is underlined, as it is difficult to find elsewhere. Its application as a gauge port, brake pressure switch adapter, and use in making brake lines hug master cylinders assures its versatility. The adapter is reported to be exactly as described, further enhancing customers' trust in Speedway's product descriptions. The reasonable price is similarly commended, indicating good value for the quality offered.

Write A Review

4.9

32 reviews

Most Liked Positive Review

5.0

I always find the part on speedway

It takes me a while to find parts online these days because the description doesn't give enough information, I like using speedway because they have everything I'm looking for as well as they come up in every search. I'm building a buggy with a few parts I've brought from speedway. I'll continue using them.

Most Liked Negative Review

3.0

Problem solver

Couldn't mount a brake light switch in the car with this fitting and the brake light switch and harness I was able to mount it on the master cylinder, Problem solved

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Worked great

5.0

3 months ago

Willbur

Arkansas

Verified

Needed it for a 23 roadster built in the 70's and couldn't find it anywhere but online and speedway had it ready to ship.

Would Recommend

Sales rep recommended.

5.0

9 months ago

Vasdas

Oklahoma

Verified

Adapter for pressure brake switch worked perfectly

Would Recommend

Easy way to isolate a master cylinder.

4.0

a year ago

The Capt.

LHC, AZ

Verified

These fittings and two pressure gauges showed me that my master cylinder was okay.

Would Recommend

Perfect Fit

5.0

a year ago

Bob

San Antonio, TX

Verified

I have a '39 Ford Deluxe with a single cylinder master brake reservoir. It uses a fluid pressure switch for the brake lights. I am upgrading to a dual cylinder reservoir and I am using this to connect an unused port for the 1/8NPT pressure sensor switch.

Would Recommend

I would but this product again

5.0

2 years ago

Solleymander

Van buren Arkansas

Verified

Exact fit Good quality product

Would Recommend

1/8" NPT female to 9/16" I.F. Adapter

5.0

4 years ago

Bigabus

Bishop, CA

Verified

Perfect fitting between one of my four Corvette style brake master cylinder ports (9/16" I.F.) and a pressure activated brake light switch (1/8" female NPT). Hard to find part, Speedway had it, thanks Speedway!

Would Recommend

I always find the part on speedway

5.0

5 years ago

Dingo dan

Phoenix

Verified

Would Recommend

Just what I needed

5.0

6 years ago

St Charles, MO

Verified

I needed a 90° off the back of my proportioning valve. This filled the bill!

Would Recommend

I would buy this product again

5.0

6 years ago

Bryan

Fort Collins, Co

Verified

Used it as an adapter for a brake pressure switch. It worked great

Only company who makes this fitting

5.0

6 years ago

Tiller

Ottawa Canada

Verified

Used this fitting to adapt original style brake pressure switch directly to a port on my master cylinder. Works great, no leaks, quality material takes torque well.

Would Recommend

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Showing 10 of 32 reviews

Questions & Answers

2 Questions • 2 Answers

Sort Questions

Do you have any of these in 3/16" inverted flare male to 1/8" NPT male or female and or in a 90 deg (will take straight if not avail in 90)?

by Doug

• 10 years ago

1 answer

View Answer

i Have a master cylinder part number 910-31445 and i am trying to plum my brake lines.The fittings on my brake lines are 1/2x20 and 9/16x18 are these the fittings i need to make my lines go into this master cylinder.Thanks Billy

by Billy

• 10 years ago

1 answer

View Answer

2 of 2 questions shown