1937-1948 Flathead Ford V8 Thermostat
1937-1948 Flathead Ford V8 Thermostat
Speedway Motors

|

#91015801-180

1937-1948 Flathead Ford V8 Thermostat

  • Will fit 1937-'48 Ford/Mercury flathead V8's
  • Opens at 180-degrees
  • OEM fitment
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Degree:

180 Degree

$11.49

/each

In Stock


Quantity

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Product Summary

1.88" Overall Diameter, 1.59" Overall Height, Steel

  • Will fit 1937-'48 Ford/Mercury flathead V8's
  • Opens at 180-degrees
  • OEM fitment
  • Two required for each engine
  • Steel construction
See more details

Key Specs

MFG. Part #91015801-180
BrandSpeedway Motors
Temp. RangeOpens at 180 degrees.
Gasket(s) IncludedNo
See more specs

Need To Know

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Speedway Motors 91015801-180 Details

Don't let that flattie boil over – keep it running cool with new thermostats from Speedway. These thermostats sit in the water outlets on the top of the head, with the hose coming down over the water outlets, holding the thermostats in place. Remember, every Flathead needs two of these!

  • OEM replacement
  • Two thermostats required for each engine
  • Opens @ 180° F
  • Fits 1937-1947 Ford/Mercury flathead V8s in cars & trucks

Learn more about the importance of the thermostat with cooling systems and how they work by reading our tech article. Cooling System Principles.

Speedway Motors 91015801-180 Specifications

KEY SPECS
MFG. Part #91015801-180
BrandSpeedway Motors
Temp. RangeOpens at 180 degrees.
Gasket(s) IncludedNo
GENERAL
Overall Diameter1.88"
Overall Height1.59"
Mounted Height1.00"
Material TypeSteel
Sold in QuantityEach

Ratings & Reviews

4.7

13 Reviews

Overall Assessment

Customers highly recommend the product for its perfect fit that doesn't creep in the hose. Its functionality and performance are consistently praised, with users appreciating its easy installation process. The product is also recognized for its great quality and adequate passageway size. Notably, it is praised for its ability to quickly regulate working pressure. The product distinguishes itself for its hard-to-find parts, offered at a competitive price, adding further appeal for potential buyers. Despite some initial uncertainties, customers found exactly what they needed in our product and consider its quality as the 'usual from Speedway'.

Write A Review

4.7

13 reviews

5

11

4

1

3

0

2

1

1

0

Most Liked Positive Review

5.0

Perfect fit!

Hard to find correct fit that won't creep in hose. This is it! (As long as you use the correct size radiator hose with smaller inside diameter above the heads water jacket neck.)

Most Liked Negative Review

2.0

I may buy again, but I doubt it.

Passageway small.

Filter by Ratings

Fits perfect

5.0

a year ago

rushr7

Mansfield OH

Verified

Used on my 41 Flathead no problems

Would Recommend

Yes, if I needed them.

5.0

2 years ago

Rob

St. Paul, Mn.

Verified

Works fine!

Would Recommend

Perfect fit!

5.0

2 years ago

Bill

Salem Oregon

Verified

Hard to find correct fit that won't creep in hose. This is it! (As long as you use the correct size radiator hose with smaller inside diameter above the heads water jacket neck.)

Would Recommend

yes they were nice

5.0

3 years ago

ditch witch

milton vt

Verified

it worked

Would Recommend

Works.

5.0

5 years ago

JETRO.

Knifetown, Sweden.

Verified

Nice and working.

Would Recommend

Customer review image

YES

5.0

5 years ago

flathead don

Whitehall, Mi

Verified

Easy install and the product is working great.

Would Recommend

I would buy thermostats again for

4.0

6 years ago

K

Or

Verified

Works correctly

Would Recommend

Flathead thermostats

5.0

7 years ago

Tom

Dade CityFl

Verified

Items arrived as described and in a timely manner. AAA+++

Would Recommend

Good parts

5.0

8 years ago

oldcyclops

Vancouver,wa.

Verified

Hard to find part, at a good price

Would Recommend

Thermostats for flathead Ford.

5.0

8 years ago

El Doc

Bergvik SWEDEN

Verified

Will get my 59A to right working pressure fast and keep it.

Would Recommend

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Showing 10 of 13 reviews

Questions & Answers

3 Questions • 3 Answers

The item title states for 37-48 while the detail description states 37-47. What is it? My engine is a 48, 59ab.

by Pothole

• 7 years ago

1 answer

View Answer

Gasket Does this require a seal or gasket ?

by Tinpit

• 11 years ago

1 answer

View Answer

Do you think this might fit a 1938 Pontiac 6 cylinder ? Thanks

by Bobby G.

• 14 years ago

1 answer

View Answer

3 of 3 questions shown

Fitment

  • 221 Ford Flathead V8

  • Ford Flathead V8 17 Stud 221 18

  • Ford Flathead V8 21 Stud 221 40

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

Customer Impersonation Script