Product Summary

6-1/4" Overall Length, 3-3/8" Overall Width, Aluminum

  • Measures 6-1/4" long, 3-3/8" wide, and 1" tall
  • Features a retro-style design and comes unpolished
  • Has 1/8" NPT inlets and is made right here in the USA
  • It is precision cast from aircraft grade A-356 aluminum
  • This top is designed for your double chamber reservoir from OTB Gear
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Key Specs

Overall Length6-1/4
Overall Width3-3/8
Overall Height1"
Thread Pitch1/8" NPT
Material TypeAluminum
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Need To Know

Quick and Easy Returns

Return Policy

OTB Gear 6438 Details

This Master Cylinder conversion replacement top is for your double chamber reservoir from OTB Gear. It is precision cast aircraft grade A-356 aluminum. Its retro-style design entails 1/8" NPT inlets.

  • Retro-style design
  • 1/8" NPT Inlets
  • Unpolished
  • Made in the USA
  • Rubber gasket not included

Fits: Early Corvette style master cylinder.

OTB Gear 6438 Specifications

KEY SPECS
MFG. Part #6438
BrandOTB Gear
Overall Length6-1/4
Overall Width3-3/8
Overall Height1"
Thread Pitch1/8" NPT
Material TypeAluminum
FinishNatural
GENERAL
Sold in QuantityEach

Ratings & Reviews

5

5 Reviews

Overall Assessment

Customers are highly satisfied with the product confirming its excellent quality and affordability. The product fits well and customers recommend it as a better-priced alternative to others. It's praised for its practicality, specifically its ease of use with remote reservoir setups for brake fluids. Its precise fit and functionality are highlighted, with no need for additional parts like gaskets. The material quality of the product is also commendable. With these qualities, the product stands out from its competitors.

5

5 reviews

5

5

4

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3

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Filter by Ratings

Very nice will machined part, perfect for the application

5.0

2 years ago

none

Lake Havasu City, Arizona

Verified

Perfect for remote ranivore

Would Recommend

I would buy this product again

5.0

6 years ago

Terry

Kentucky

Verified

Looks good, fits well and less expensive than other vendors.

Would Recommend

Nice product.

5.0

8 years ago

tls

Seymour, Tn

Verified

Good quality. No gasket included. Should work well under the 37's floorboard.

Would Recommend

As ordered

5.0

8 years ago

43 Chev

Soldotna, Alaska

Verified

The master cylinder reservoir cover was just as advertised and fit the application perfectly.

Would Recommend

Great Cover

5.0

10 years ago

Mike

Franklin, NC

Verified

This cover makes it easy to convert to a remote reservoir set-up. Just add a couple of bayonet fittings, tubing and a couple of plastic containers on the firewall and you are good to go. No more climbing under your ride to check your brake fluid.

Would Recommend

Showing 5 of 5 reviews

Questions & Answers

4 Questions • 7 Answers

does this remote top fit your universal 1'' bore master cylinder #91031445 do you have a gasket how does the top attach

by steve

• 8 years ago

4 answers

Do you have the gasket required for this conversion top

by Dick

• 9 years ago

1 answer

With a remote fill on an inaccessible master cylinder, I think that all air should be removed so that the fluid level can be gaged at the fill tank. This way, you could check for low volume, and a possible fluid leak. How can this be accomplished with your unit? On the Corvette MC used frequently on hot rods, does the cap seal off both front and rear chambers? If so, then two tanks must be used. And, then it would be difficult to insure the MC was full, and did not have an air block, especially if you could not plumb in the fill lines so that at all points were above the cyl. Any solution or suggestions?

by JME.

• 10 years ago

1 answer

I am installing kit 91031409 on the frame of 55 buick. I have no way to remove cap[ without cutting into floor ,will this let me remotely fill master cylinder ?

by g-man

• 11 years ago

1 answer

4 of 4 questions shown

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