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#91015616
Speedway 16 Lb. Thermocap Radiator Cap
$40.99
/each
In Stock
Quantity
Need Help? Call to Order
Add to a list
Select a vehicle to verify Fitment
Select Vehicle
|
#91015616
$40.99
/each
In Stock
Quantity
Need Help? Call to Order
Add to a list
Select a vehicle to verify Fitment
Select Vehicle
Need help?
855.313.9176Quick and Easy Returns
Return PolicyThe built-in calibrated thermometer on this chrome-plated 16 lb. radiator cap makes it easy to check your coolant temp - and to know when its safe to remove the cap. Fits radiators on most domestic vehicles.
Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles.
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | 91015616 |
| Brand | Speedway Motors |
| Pressure Rating | 16 psi |
| GENERAL | |
| Material Type | Steel |
| Finish | Zinc Plated |
| Overall Diameter | 2.50" |
| Sold in Quantity | Each |
| Notes | 28-280 degree temperature measurement range. |
3.5
31 Reviews
The product, a radiator temperature gauge and cap, received mixed reviews from customers. Appreciated for its dual functionality and accurate readings, it was considered a valuable tool by several users for monitoring engine temperature and coolant levels. However, some customers reported issues with leakage around the thermometer and plastic top cover, raising questions about its build quality. Despite discontents with material, users still appreciate the idea citing it as a great concept but feel the practical implementation lacks. Despite this, many users still recommend the product and find it helpful in their engine management. Its safety value is also highlighted due to its pressure release upon reaching critical levels. Overall, the product's quality and performance seem to vary among users, but its concept and practical utility are generally endorsed.
3.6
31 reviews
5
13
4
7
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2
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1
7
Most Liked Positive Review
4.0
Looks good, not well made
I've seen better quality products like this, for the money it is worth it. Upper gasket is loose in support housing if you don't watch it installing it gasket will slip to the side and won't work with recovery system.
Most Liked Negative Review
1.0
An outstanding concept! But disappointin
I thoroughly love the concept, and have run a 16-lb. thermo-cap (Speedway Brand) on my 1971 Buick Riviera for problem-free years now. But attempting to fit my Ford pickup radiator I've attempted two products for the same function (Speedway Brand & Mr. Gasket). Both, I'm sad to say, leaked under pressure. I wouldn't wish to attempt a third cap. I simply went back to my old cap.
Filter by Ratings
Never...
1.0
14 days ago
None
CA
Verified
1st one I got was leaking after just a short trip to a store. The 2nd one you sent started to leak before I even backed out of my driveway. Doesn't products you put your name on get tested?
Would Not Recommend
Yes works good
4.0
2 months ago
Bry
St hilaire mn.
Verified
On my 65 fairlane works good
Would Recommend
Yes
4.0
6 months ago
Tk
Oklahoma
Verified
No comment
Rad cap
5.0
7 months ago
57 Belair
Louisiana
Verified
Works as it should, gives me comfort knowing I have another way to check the temperature
Would Recommend
I'll buy again if I need one
5.0
a year ago
Tim
Ruskin, Fl
Verified
This is a great radiator cap. I've used them in the past and they work just fine.
Would Recommend
The thermocouple probe needs to be longer
2.0
a year ago
Mike L.
Phila. Pa.
Verified
I think this is a great concept, but in order for it to be accurate the thermocouple probe needs to be about an inch and a half long, so it is submerged in the radiator water.
Would Not Recommend
Works great and looks great
5.0
a year ago
bobc
Oklahoma City
Verified
Installed on my T bucket so it stands out easy to see. seems to be working as is
Would Recommend

Great quality
4.0
a year ago
Hawk
Wicksburg, Alabama
Verified
Looks really good. Seems very durable and high quality. However, it reads the ambient temperature of the coolant at the top of the radiator. Does not represent actual engine operating temperature. Looks great at car shows though which is where I found out about it.
Would Recommend
These should be on all auto's for safety!
5.0
a year ago
Crash
Beebe,Arkansas
Verified
I have been using a smaller one for years and now that I have tried this one I'll never go back to the smaller size. These are awesome you can see the temp and never have to worry about getting burnt from accidentally opening a hot cap again! Awesome to have Thanks again Speedway!! The greatest place to shop!
Would Recommend
Poorly made
1.0
2 years ago
Stinky pete
Peoria, AZ
Verified
Installed on radiator, engine warmed up and it started leaking and thermostat fell out of the housing
Would Not Recommend
Showing 10 of 31 reviews
6 Questions • 7 Answers
Will this fit my 1955 Chevrolet radiator?
by Ed
• 7 years ago
1 answer
View Answer
will this fit 2002 pontiac aztek?
by horusalton
• 8 years ago
1 answer
View Answer
Will this cap fit 1978 Chevy nova
by Will
• 9 years ago
1 answer
View Answer
will this cap fit a 1965 Buick Riviera with a/c and the 401 engine?
by RON
• 11 years ago
1 answer
View Answer
Will this fit a 1988 Ford Mustang GT with the 5.0?
by Rick
• 11 years ago
1 answer
View Answer
WILL CAP FIT A 48 LINCOLN STOCK RADIATER? Just want to use it on stock radiator as no gauge working on car
by moodie
• 12 years ago
2 answers
View Answers
6 of 6 questions shown