Product Summary

Universal Fit, 28-32 psi Pressure Rating, Steel

  • Safety lock cap for radiators
  • Designed for high pressure, 28-32 lbs
  • Provision to release pressure, taking the danger away from checking your race high pressure system
  • High pressure cap raises boiling point of water
  • Zinc-plated for rust and corrosion prevention
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Key Specs

MFG. Part #91015728
BrandSpeedway Motors
Pressure Rating28-32 psi
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91015728 Details

This safety lock cap for radiators is designed for high pressure, 28-32 lbs.  Provision to release pressure, taking the danger away from checking your race high pressure system.  High pressure cap raises boiling point of water.

Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles

Speedway Motors 91015728 Specifications

KEY SPECS
MFG. Part #91015728
BrandSpeedway Motors
Pressure Rating28-32 psi
GENERAL
Material TypeSteel
FinishZinc Plated
Overall Length3.07"
Overall Diameter2.60"
Sold in QuantityEach

Ratings & Reviews

4.2

9 Reviews

Overall Assessment

Customers praise the product for its excellent fit and practical functionality, particularly in automotive use like on coolers and race cars. The product is noted for its quality, matching performance of more expensive alternatives. Users also compliment its easy-to-use twist-and-snap design. Despite one critical review citing plastic construction, overall feedback underscores solid outcome and value.

4.2

9 reviews

5

5

4

3

3

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2

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1

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Great radiator cap!

4.0

11 months ago

Jacob

Nevada

Verified

We run them on all 8 race cars, no problems yet !

Would Recommend

Good part

5.0

2 years ago

nonme

Norfolk, VA

Verified

Good

Would Recommend

I would buy different

4.0

2 years ago

none

Norfolk, VA

Verified

Returned product. Wrong type for my stock application

Would Not Recommend

war gut

5.0

2 years ago

manfi

Schönenwerd CH

Verified

Hat am Kühler von unserem Pontiac Le Mans verwendet, war gut

Would Recommend

Never…..plastic pin broke first time used!! JUNK!

1.0

4 years ago

John

PA

Verified

PLASTIC! Junk used once

Would Not Recommend

What I needed

5.0

5 years ago

Speed's

Melbourne, Florida, usa

Verified

It fit. What I needed on time.

Would Recommend

vearygood

5.0

10 years ago

tom race car

el dorado ca

Verified

on race car

Would Recommend

Super product would buy more if needed.

5.0

10 years ago

Uncle Frank

Grandville , Mi.

Verified

Works as good as high $$$ caps

Would Recommend

Twist-n-snap

4.0

10 years ago

Howler

Columbus, IN

Verified

Fits tight, twist it then snap the top. Seems to hold great.

Would Recommend

Showing 9 of 9 reviews

Questions & Answers

1 Question1 Answer

Is this a double seal style of cap that allows fluid to escape into my recovery/puke tank, and sucked back into the system upon cool-down? It seems to me that when I install this cap on my new upper radiator hose filler neck of my 1986 Small Block Chevy that my new boiling point of 296 degrees (28lbs X 3 deg = 84 deg + 212 deg = 296 deg new boil point) I should be ok? Considering I am on the high pressure and hot water outlet side of the engine. Or, should I go to a lower pressure cap?

by Roadsterrick

10 years ago

1 answer

1 of 1 questions shown

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