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Stainless Thru-Frame Brake Line Fittings, 1-1/2 - 2 Inch

Specs
Material Type:
Stainless Steel
Overall Length:
3.16
Sold in Quantity:
Pair
Finish:
Polished
Angle:
Straight
Fitting End A:
-3 AN
Fitting End B:
1/8" NPT
Garage Sale:
No
Notes
Requires drilling a 9/16" hole in your frame rail. Inside width between nuts is 1.15"
Stainless Thru-Frame Brake Line Fittings, 1-1/2 - 2 Inch
Product Video
Stainless Thru-Frame Brake Line Fittings, 1-1/2 - 2 Inch

Click image to enlarge

Watch the video below to learn more about the differences in brake lines, flare types and fittings you may want to consider before plumbing away on your current chassis project.

Please NOTE the following about this product:

  • This item is sold as a pair.

Details

Reviews

Q & A

What's in the Box

Use these 100% stainless steel fittings to eliminate unsightly tabs and clamps from your frame rails. Each fitting has -3 AN male threads on one end and 1/8" NPT female threads on the other. Fits frame rails 1-1/2" to 2" wide.

Sold in pairs.

Item Details

1/8" NPT female to -3 AN male

Customer Reviews

Rated 4.6 out of 5 by 20 reviewers.
RATING BREAKDOWN
20 reviews
5 Stars
15
4 Stars
2
3 Stars
2
2 Stars
1
1 Star
0
RECOMMEND THIS PRODUCT:

mike54
Verified Purchaser
South Carolina, USA
Product Rating

Such a clean look

October 11, 2014
Very easily installed, much better than bending the line around the frame..
Pros:
  • Easy To Install
Cons:
  • need to use pipe dope on pipe threads
Yes, I recommend this product.
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henry23t
Sunnyvale Ca. USA
Product Rating

stainless thur-frame brake line fitting

October 01, 2014
it's make your brake line a clean look on any hot rod with a full frame setup.. sample a 23-34 model year..
Yes, I recommend this product.
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bobonohio
Verified Purchaser
Dayton, Ohio
Product Rating

Graet product!

May 16, 2014
I am building a Pro-Street car and instead of running brake lines over or under the frame for the front brakes, this product gives your car that professional installation look.
Pros:
  • Easy Installation
Cons:
  • None
Yes, I recommend this product.
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N705BM
Verified Purchaser
Burlington, VT, USA
Product Rating

Much neater installation than tabs

February 15, 2014
Used these front and back. A step drill worked well to make the necessary holes in the frame. Use cutting oil and keep the drill speed lower than max. For some reason, it's harder than I expected to line up the holes on opposite sides of the frame -- even with compulsively careful measurements.
Pros:
  • neater than tabs
Cons:
  • can be hard to line up holes
Yes, I recommend this product.
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PeteG888
Verified Purchaser
Lake Havasu City, AZ, USA
Product Rating

nice product

January 11, 2014
I use these on my '23 T Bucket and on the '34 Ford I'm building. Makes for a very sanitary install of your brake lines. I machine the part to the exact width of the frame and tap the inside a little more and tap the inside frame rail and thread it directly to the frame. That way I don't use the nut on the inside. Looks very clean that way.
Pros:
  • nice piece. finish is great.
Yes, I recommend this product.
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theofficial
conway sc
Product Rating

this product looks great

October 27, 2013
This product helped me get the look I wanted. I was able to run the lines through the frame and not on the rear. This gave me such a clean look..
Yes, I recommend this product.
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Paisano
West River, MD, USA
Product Rating

Best price in town for this part.

September 27, 2013
I seen a lot of these and this is the same as all others. Made out of stainless,
Pros:
  • it all about bottom line an and quality
Yes, I recommend this product.
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dennis
Verified Purchaser
bullhead city az
Product Rating

through brake lin fittings

July 09, 2011
need to include brake fittings to connect brake lines
Pros:
  • Easy To Install
Yes, I recommend this product.
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Ken
Verified Purchaser
Western Massachusetts
Product Rating

Nothing but good

December 16, 2011
Used as it was intended to be. It does exactly as advertised.Cheaper to buy than to attempt to make. Provides an attractive functional addition to car
Pros:
  • Easy To Install
  • Lightweight
Yes, I recommend this product.
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41indian
Verified Purchaser
Newark, Ohio
Product Rating

Brake line routing

February 25, 2012
Best way to route brake lines and keep it all clean and simple !
Pros:
  • The cleanest way to go
  • Easy To Install
Yes, I recommend this product.
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Page 1 of 2
91031360

Product Q&A

7 questions : 9 answers

1 answers

What is the exact length? What is the exact length from the end of threads to the base where the shaft and bolt head meet? I ordered the 2-1/4"-2-3/4" before and they stuck out from the frame further than I liked. I'm wondering if I can use these instead.

slynch
February 25, 2015

What is the exact length? What is the exact length from the end of threads to the base where the shaft and bolt head meet? I ordered the 2-1/4"-2-3/4" before and they stuck out from the frame further than I liked. I'm wondering if I can use these instead.

Answers

February 25, 2015
EricM
This thru-frame fitting is 2 3/8" long as an under-head length (meaning the round shank and threads measure 2 3/8")
1 answers

What adapter will I need to go from the -3 AN male threads to 3/8 -24 IFF that is on the hoses that came with your disc brake kit? I have hoses #617-8568 that came with the disc brake kit I bought. I would like to use the thru frame fittings but cannot seem to find an adapter for the -3 AN that the hoses will screw onto.

Stumped2
Kansas
September 28, 2014

What adapter will I need to go from the -3 AN male threads to 3/8 -24 IFF that is on the hoses that came with your disc brake kit? I have hoses #617-8568 that came with the disc brake kit I bought. I would like to use the thru frame fittings but cannot seem to find an adapter for the -3 AN that the hoses will screw onto.

Answers

September 29, 2014
EricM
The hoses you have are not compatible with these thru frame fittings, sorry the adapter fitting you refer to is not available. Those hoses are meant to be mounted to a frame bracket 91031311. If you want to use these thru frame fittings you need to use AN hoses such as 91031842.
1 answers

Has anyone reported having problems bleeding all the air from their front disc brake system using the thru the frame fittings?

tweddlefang
Chouteau, Ok, 74337
September 08, 2014

Has anyone reported having problems bleeding all the air from their front disc brake system using the thru the frame fittings?

Answers

September 09, 2014
EricM
No these fittings will not cause any issues bleeding air from your system. If you are having troubles bleeding then it is more than likely an air trap created by a line routing up and down. Try jacking the front of the car up as high as possible with the back of the car on the ground and bleed all four brakes. Then do the same only jacking up the rear with the front on the ground. If you still have issues jack the left side of the car up as high as possible with the right side on the ground and again bleed the brakes. Now do the same the right side in the air and the left on the ground. We run into air trap issues fairly often on hot rod brake systems where the master cylinder is mounted down low. This can happen to nearly any vehicle but it does seem to come up more often with low mounted master cylinders.
1 answers

Part numbers I have these through frame fittings and wanted to know the fitting numbers to go from the /8" NPT to a 3/8-24 brake line? I have the Disc Brake set p and have ordered the adaptor for the -3n to hose adaptor already

reward
coupe33
April 20, 2013

Part numbers I have these through frame fittings and wanted to know the fitting numbers to go from the /8" NPT to a 3/8-24 brake line? I have the Disc Brake set p and have ordered the adaptor for the -3n to hose adaptor already

Answers

April 22, 2013
Jason
Speedway offers part #91031831 that is 1/8" NPT male to 3/8"-24 inverted flare female to connect to existing hard line.
2 answers

HI can you tell me the width what size hole will i need to drill

kojo
bryant ar
May 09, 2011

HI can you tell me the width what size hole will i need to drill

Answers

May 17, 2014
bobonohio
I read somewhere that you need a 9/16 Dia. hole.
May 11, 2011
Jason
A 9/16" hole is required.
2 answers

Is this part used with IFF steel lines 3/16". Also What hoses would go with it ?

Super Fan
Lockport NY
August 08, 2011

Is this part used with IFF steel lines 3/16". Also What hoses would go with it ?

Answers

August 05, 2014
Pete32
This fitting has a 1/8" NPT connection on one end and an AN3 fitting on the other. To connect your 3/16" steel brake line to it you'll need a 1/8" NPT to 3/8" IFF adaptor fitting of some kind.
August 15, 2011
Jason
These fitting are used to adapt to AN style lines to the calipers. Use adaptor 91031831 to use with IFF steel lines
1 answers

what is the part number for the pair that are for 2 1/2 frames

dannychimo
modesto ,ca
March 07, 2011

what is the part number for the pair that are for 2 1/2 frames

Answers

March 09, 2011
Jason
Item #91031361 is for 2.25" - 2.75", so this would be the item you are looking for.
Page 1 of 1

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Stainless Thru-Frame Brake Line Fittings, 2-1/4 - 2-3/4 Inch
(Part #91031361)
                        

Use these 100% stainless steel fittings to eliminate unsightly tabs and clamps from your frame rails. Each fitting has -3 AN male threads on one end and 1/8" NPT female threads on the other. Fits frame rails 2-1/4" to 2-3/4" wide.

Sold in pairs.

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