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Product Summary

Universal Fit, 1.60" Overall Height, 1.50" Neck I.D.

  • This pop up flush mount gas cap is perfect for the hot rodder looking for a sleek and simple to install filler cap
  • 2 1/2" diameter is easy to fit into tight spaces
  • 1-1/2" filler hose connection makes routing hose to your fuel tank quick and easy
  • Cap can be left popped up or press down on the cap and it will click into the flush position
  • Non-vented cap will not leak or allow fuel to splash out
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Key Specs

MFG. Part #91012521
BrandSpeedway Motors
Neck I.D.1.50"
Material TypeAluminum
FinishPolished
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Need To Know

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Speedway Motors 91012521 Details

As featured on Classic Truck’s Week to Wicked. Watch the transformation here!

Polished billet aluminum pop-up flush mount gas cap is 2-1/2" O.D., 1.600" tall, and works with a 1-1/2" hose.

  • Can be left popped up or flush down against the body
  • Works with 1-1/2" filler neck hose
  • Non-vented cap design - gas tank vent is recommended

The Pop-Up gas cap, 910-12521, does not have a vent hole.  Some air might get past the threads that hold the cap on, but there is no dedicated venting passage.

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Speedway Motors 91012521 Specifications

KEY SPECS
MFG. Part #91012521
BrandSpeedway Motors
Neck I.D.1.50"
Material TypeAluminum
FinishPolished
GENERAL
Overall Height1.60"
Outside Diameter2.50"
Sold in QuantityEach

Ratings & Reviews

4.5

23 Reviews

Overall Assessment

Customers appreciate this product for its excellent build quality, aesthetic appeal, and practical use particularly for bed fill gas tanks. Many recommend it for vintage Chevy trucks, praising its easy installation and functionality on various models. Its clean, finished appearance and pop-up feature offers a sleek yet convenient look. However, some customers noted issues with opening the cap, suggesting a need for improved design. A few users wished for more durability and added enhancements such as a lock mechanism, and improved threading. Despite these minor setbacks, the majority expressed satisfaction and approval, often opting to repurchase.

4.5

23 reviews

5

16

4

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3

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0

Most Liked Positive Review

4.0

Excellent design, average execution

The design is great, although you might need sticky fingers in order to get the button to rotate, thereby getting the cap open. My gripe is with the sub-par machining on the threads. Be prepared to knock some of the edge off the threads and add some wax as a lubricant in order for proper use. For $100+, this shouldn't be necessary. It would also be a nice touch to have an o-ring at the seal. The cap is non-vented.

Most Liked Negative Review

2.0

Not as pictured

Could have been made better picture should be updated to show the actual cap. The steel roll pin on the cap cuts into the aluminum cap so I don't see it lasting long.

Filter by Ratings

Nice finish on cap assembly

5.0

3 months ago

Greg

Stanwood , Michigan

Verified

Cap looks great...it has a twist to pop up and unscrew from base assembly. Tube size for fitting was a bit smaller than expected but I will make it work...it may give me better mounting placement being smaller...

Would Recommend

Fantastic quality

5.0

8 months ago

Jumpingranger

Lincoln ne

Verified

Great price for some solid machine work. This cap works perfectly for my build

Would Recommend

Pop up gas filler

5.0

a year ago

Zeke

Vista

Verified

I havew a turtle deck on my t bucket and a gas cap and my trunk lid would hit it. This solved that problem

Would Recommend

Very nice set up for bed fill gas tanks

5.0

2 years ago

Roscoe

Alabama

Verified

This is perfect for bed fill gas tanks.

Would Recommend

I would recommend these to anyone. Great look and price.

5.0

4 years ago

Bill

Penryn Ca.

Verified

They look great on my 55 Chevy Truck. I can fill up on either side.

Would Recommend

Nine Product

5.0

4 years ago

George

Raleigh NC

Verified

Very nice gas filler neck. Very well made.

Would Recommend

pop up

5.0

4 years ago

66 C10

Mobile, AL

Verified

perfect for in truck bed

Would Recommend

Was as described and works well.

5.0

4 years ago

58Chevy

Tampa, Fl

Verified

Works on fender of 58 chevy truck for relocated gas tank.

Would Recommend

Looks great

4.0

5 years ago

34 roadster

Australia

Verified

Quality looks good just what I needed,

Would Recommend

Open/close challenges

3.0

5 years ago

Goldcar

Eureka Springs, AR

Verified

The center has to be pushed in and turned to allow the cap to pop up, then it can be unscrewed. Reverse the process to close just as difficult.

Would Recommend

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