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Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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America's Oldest Speed Shop ®

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Filler Twist Cap with Aluminum Neck

SAME DAY SHIPPING! Order within the next 1 hour 37 minutes and receive same day shipping

Specs
Material Type:
Aluminum
Overall Height:
1.50
Overall Length:
3.17
Sold in Quantity:
Each
Finish:
Natural
Inside Diameter:
1.50
Outside Diameter:
2.25
Gasket(s) Included:
Yes
Garage Sale:
No
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

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

greensnake427
Norton, MA, USA
Product Rating

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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TAIL GATOR
Verified Purchaser
TAMPA BAY AREA
Product Rating

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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PapaTaylor
Verified Purchaser
Oak Harbor,WA
Product Rating

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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bbadfred
Rantoul Il
Product Rating

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

4 questions : 4 answers

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

1 answers
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).

it doesn't say it but can neck be welded

1 answers
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.

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

1 answers
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

What is the inside diameter of the bung? Thanks.

1 answers
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
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