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America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
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U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
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Speedway Manifold Filler Neck

SAME DAY SHIPPING! Order within the next 6 hours 4 minutes and receive same day shipping

Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Natural
Centerline of Holes:
3.23
Overall Height:
2.28
Assembled Height:
3.50
Notes
Has two 1/4" NPT ports and one 1/2" NPT port. 7/16" pipe nipple for overflow. Includes 3/8" mounting bolts, washers, and gaskets.
Speedway Manifold Filler Neck
Product Video
Speedway Manifold Filler Neck

Click image to enlarge

Watch the video below to learn more about Speedway Motors radiators.

Details

Reviews

Q & A

What's in the Box

This neck allows you to fill your cooling system at the intake manifold if you radiator is lower than the intake. It can be flipped over for RH or LH upper hoses, and has two 1/4" npt and one 1/2" npt hole in the back for bypass lines or sending units. Fill cap plate has a 7/16" pipe nipple welded into the overflow area.

Fits Small Block or Big Block Chevy V8.

Customer Reviews

Rated 3.4 out of 5 by 14 reviewers.
RATING BREAKDOWN
14 reviews
5 Stars
6
4 Stars
3
3 Stars
0
2 Stars
0
1 Star
5
RECOMMEND THIS PRODUCT:

Big D
Verified Purchaser
Verified Reviewer
Pennsylvania

half the price of the name brand..same quality

February 08, 2016
Nice product for custom installs where the radiator is lower than the engine.
Pros:
  • Nice Looking Product
  • Great Fit
  • Extra Ports In Back
Yes, I recommend this product.
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Wolfie
Verified Purchaser
Verified Reviewer
Indiana

Handy on race car

January 26, 2016
This mounts the cap high in the system for easy bleeding.
Yes, I recommend this product.
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sdv
flintstone ga

2nd time buying one with the same results, LEAKS LIKE CRAZY!

November 02, 2015
I purchased the first one for a project about a year ago and had issues with it leaking,speedway sent me replacement with no luck and finally had to modify it to get it to work good enough. Well a year later and i made the mistake and bought another one for the new project thinking they should have fixed the issues with them by now and i was wrong, its the same junky product and leaked just as the others did. They all leak around the top filler plate because its made of soft aluminum and will not seal for anything. Until they start making the top out of more sturdy material i will not buy any more nor recommend it to anyone. speedway has some good products but this is one they need to pull from there store until they can get it corrected.
No, I would not recommend this product.
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Cheyenne
Verified Reviewer
Ontario, Canada

I do NOT recommend this product

July 12, 2015
After installation,..I could not find a radiator cap that would seal the neck closed,...it leaked coolant constantly. I even purchased the rad cap that Speedway's Tech. adviser suggested, to no avail. I purchased a Moroso "stamped " filler neck ( PN#63465 ) from my own dealer,..installed that unit onto the filler neck unit PN# 5752200, with the same results,..coolant leaking from under the cap. I purchased a "CSR" Billet Aluminum filler neck,.. installed it,..problem solved !! Incidentally,.. I contacted Moroso in regards to the filler neck PN# 63465,...and learned really fast that they are more into sales, than PR work !!
No, I would not recommend this product.
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Redline j
Verified Purchaser
Verified Reviewer
Dallas ga

Works great

May 17, 2015
Simple bolt on works as described
Yes, I recommend this product.
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Taylor937
Verified Purchaser

great Product..

April 11, 2015
Great product. Shipped and received quickly. Exactly what I was wanting!!
Yes, I recommend this product.
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racingtlc
Verified Purchaser
Calhoun Ky

This part looks an fit as good as any ot

February 09, 2015
Fit,looks,an works as good as a higher price brand,very happy!!
Yes, I recommend this product.
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studeynut
Verified Purchaser
Twin Falls, Idaho

Well made

October 29, 2014
Worked great to modify to fit on my 67 Datsun 1600 Roadster, much cheaper than the $400 for an original piece. Had plenty of material to redrill to fit the Datsun.
Yes, I recommend this product.
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WaterDodger
Canton, GA, USA

LEAKS

September 14, 2014
Will not seal around the cap. We tried numerous types from a stock gm to a high pressure cap. Regardless of our efforts the neck continued to leak. After the problem I read through other reviews and noticed that several people have had the same issue. We have always purchased from speedway and will continue to do so.
No, I would not recommend this product.
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Merchant Response:

Speedway Motors Customer Service team has issued this customer a return label for this product to receive a refund. We apologize for any frustration or inconvenience this may have caused and are always happy to help in any way that we can.
421camaro
Verified Purchaser
New Hampshire

Great customer support

September 11, 2014
This place is awesome,great prices,great products and the best customer support out there.
No, I would not recommend this product.
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Page 1 of 2

Product Q&A

3 questions : 4 answers

1 answers

What Cap dose this take.? I'm planing on replacing the filler neck I now have,I don't know who made the one I have but I'm using one of these,or at lest one that looks excatly like that in photo here, I got from a buddy some years back. When I first put it on my t-bucket,the cap would not seal,there is no bends at all or scraches in the top were cap fits on,so tryed 4 other caps with the same no seal happening. At that point I found out the cap neck is too deep to seal reg caps. What I'm asking is this one made for reg size caps or some oddball like this old one? And have you herd about these old ones before cap size wise? I've always got great stuff from you,but this was not from you,but looks the very same,so before buying one to replace it,I need to know. Thanks

TheBat4
Miami, FL, USA
March 19, 2014

What Cap dose this take.? I'm planing on replacing the filler neck I now have,I don't know who made the one I have but I'm using one of these,or at lest one that looks excatly like that in photo here, I got from a buddy some years back. When I first put it on my t-bucket,the cap would not seal,there is no bends at all or scraches in the top were cap fits on,so tryed 4 other caps with the same no seal happening. At that point I found out the cap neck is too deep to seal reg caps. What I'm asking is this one made for reg size caps or some oddball like this old one? And have you herd about these old ones before cap size wise? I've always got great stuff from you,but this was not from you,but looks the very same,so before buying one to replace it,I need to know. Thanks

Answers

March 19, 2014
EricM
You may want to try a radiator cap such as 91015706 (Stant 10372.) We have found it to work better with filler necks that are a little extra deep. At times we will come across a filler neck that is deeper than typical. It doesn't seem to be limited to this type of filler but more often than not they are the stamped style. The billet necks seem to be more consistent.
2 answers

What material is this made of?

Billy Bob
Auburn, IN
August 06, 2011

What material is this made of?

Answers

August 11, 2011
torQ!
The body is aluminum, the top section is stamped steel.
August 08, 2011
QC
This is made from aluminum.
1 answers

I just ordered one of these from Speedway,...Does this unit accept the 1.5" I.D.radiator hose ??,...it doesn't state in your specs exactly what hose diameter fits this unit.

Cheyenne
Southwestern Ontario, Canada
May 17, 2015

I just ordered one of these from Speedway,...Does this unit accept the 1.5" I.D.radiator hose ??,...it doesn't state in your specs exactly what hose diameter fits this unit.

Answers

May 18, 2015
Eric
Expert
Yes this is for a 1 1/2" radiator hose.
Page 1 of 1

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