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America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
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800.979.0122

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Since 1952
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Filler Twist Cap with Aluminum Neck

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Natural
Gasket(s) Included:
Yes
Garage Sale:
No
Overall Height:
1.50
Overall Length:
3.17
Inside Diameter:
1.50
Outside Diameter:
2.25
Notes
Cap locks on the inside of the neck, not the outside like a radiator cap. Some OEM caps may not fit this neck.
Filler Twist Cap with Aluminum Neck
Filler Twist Cap with Aluminum Neck
Filler Twist Cap with Aluminum Neck
Filler Twist Cap with Aluminum Neck

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

These filler necks come with a vented cap which vents to the underside of the cap. Weld-in 2.3" O.D. bung. Bung is aluminum.

Customer Reviews

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

Punisher
Verified Purchaser
Verified Reviewer
Beachwood, nj

Works great

June 25, 2015
Works great no leaks or issues with the cap or filter neck. I would highly recommend this for anyone with an aluminum tank
Yes, I recommend this product.
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greensnake427
Norton, MA, USA

inferior gasket material

June 19, 2014
After 6 months of exposure to fuel fumes, the gasket expanded, softened and is not useable. Speedway acknowledges the problem due to ethanol fuel, but has no solution or recommendation for a fix.
No, I would not recommend this product.
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Merchant Response:

Greensnake427 ??_ Thanks for your review. We appreciate hearing from you. Your review has been passed along to our Customer Service team to review the situation and our QC team to record and inspect the issue with this product. Upon determination of further testing results, can we then provide an adequate update for this item's description. Please bear with us during this time. We apologize for your frustration and are always happy to help.
PapaTaylor
Verified Purchaser
Oak Harbor,WA

Gas cap

April 26, 2012
Very nice piece. A little bit short,and will have to weld on an extension pipe, but totally worth it
Pros:
  • Good Quality
  • Lightweight
Yes, I recommend this product.
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TAIL GATOR
Verified Purchaser
TAMPA BAY AREA

A MUST HAVE PIECE FOR DIY GAS TANK!!

February 06, 2011
EASY TO INSTALL,LOOK'S RIGHT
Pros:
  • Easy To Install
  • Durable
  • Lightweight
No, I would not recommend this product.
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bbadfred
Rantoul Il

Very good product perfect for my applica

February 14, 2010
Using this cap for my bed mounted fuel tank on my 67 GMC hot rod pickup. works great small enough for a small fuel door.
Pros:
  • Worked perfectly
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

5 questions : 5 answers

1 answers

What is O.D. of cap at it's widest dimension ?

Figjam
Canada
March 26, 2013

What is O.D. of cap at it's widest dimension ?

Answers

March 27, 2013
Jason
The filler twist cap is 3.17" od at widest point and 2.65" od elsewhere. The bung has a 2.3" od and is 1-1/8" tall(1-1/2" tall with cap).
1 answers

it doesn't say it but can neck be welded

john the welder
houston tx
February 01, 2011

it doesn't say it but can neck be welded

Answers

February 03, 2011
Bill
This Filler Twist Cap with Aluminum Neck p/n 6175021 has a Weld-in 2.3" O.D. bung. It can be welded provide you use the proper procedures for welding aluminum.
1 answers

Neck is aluminum...What is cap material? Is it plated, polished, anodized?

Michigan
September 15, 2011

Neck is aluminum...What is cap material? Is it plated, polished, anodized?

Answers

September 15, 2011
Jason
The cap is zinc plated
1 answers

What is the inside diameter of the bung? Thanks.

Jeff
Atlanta
January 30, 2012

What is the inside diameter of the bung? Thanks.

Answers

January 31, 2012
Jason
2.160" is the id. This bung is 1.310" tall
1 answers

Is the filler neck available in longer lengths. example: 3 inches tall

Martin
Wellston, Mi.
June 12, 2015

Is the filler neck available in longer lengths. example: 3 inches tall

Answers

June 12, 2015
Eric
Expert
Sorry we do not offer this in other lengths.
Page 1 of 1

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