GM Alternator 5/8 Inch Wide Belt Pulley, Aluminum
GM Alternator 5/8 Inch Wide Belt Pulley, Aluminum
Speedway Motors

|

#91016252

GM Alternator 5/8 Inch Wide Belt Pulley, Aluminum

  • Attractive and durable aluminum construction
  • Used on popular GM externally regulated, "SI" and one-wire alternators
  • Fits 1963 and newer GM alternators
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Finish:

Aluminum

PlainChrome

$24.99

/each

In Stock


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Product Summary

V-Belt Belt Type

  • Attractive and durable aluminum construction
  • Used on popular GM externally regulated, "SI" and one-wire alternators
  • Fits 1963 and newer GM alternators
  • Allows the use of the 5/8" wide flathead Ford style V-belts
  • Inside diameter .661", outside diameter 2.883", 1.282" thick
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Key Specs

MFG. Part #91016252
BrandSpeedway Motors
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Speedway Motors 91016252 Details

So, you've converted over to a 12-volt electrical system and bolted a GM alternator to your flathead Ford V8. Now it's time to install the belt and pulley, but your engine uses a 5/8" belt and the alternator pulley is 1/2"! Don't worry – Speedway has you covered. This aluminum pulley is designed to fit on a GM alternator and use a 5/8" drive belt.

  • Used on popular GM externally regulated, "SI" and one-wire alternators
  • Fits 1963 and newer GM alternators
  • Allows the use of the 5/8" wide flathead Ford style V-belts
  • Attractive and durable aluminum construction

Application


Speedway Motors 91016252 Specifications

KEY SPECS
MFG. Part #91016252
BrandSpeedway Motors
GENERAL
Belt TypeV-Belt
Groove Count1

Ratings & Reviews

4.7

15 Reviews

Overall Assessment

The product received consistent praise for its high-quality construction and fit, demonstrating usability across a range of applications such as 12v conversions, boat engines, and alternator positioning. Users reported satisfaction with the product's fitting, quality, and aesthetics. Despite minor adjustments needed for certain applications, and it being too thick on the back side for some single belt applications, the overall sentiment acknowledges it as a worthwhile purchase. The product's superior quality was highlighted as a standout feature, with a customer who had to source an alternator elsewhere complimenting this product's perfect functioning.

Write A Review

4.7

15 reviews

5

13

4

0

3

1

2

1

1

0

Most Liked Positive Review

5.0

216 engine

Needed this pulley on 216 Chevy engine. Used a high amp power master alternator and OG water pump 5/8" belt

Most Liked Negative Review

2.0

doesn't work on a single belt applicatio

. had to turn it down to sit against the alt to work it is too thick on the back side

Filter by Ratings

216 engine

5.0

a year ago

Adam

Tahoe, Ca

Verified

Needed this pulley on 216 Chevy engine. Used a high amp power master alternator and OG water pump 5/8" belt

Would Recommend

Great product best bang for the buck

5.0

2 years ago

Slim

Tampa fl

Verified

Very nice piece worked great for what I needed

Would Recommend

Yes

5.0

4 years ago

Raydon

Winchester ky

Verified

All good

Would Recommend

Excellent Product!!

5.0

5 years ago

Mater

Beachwood, NJ

Verified

Solid, quality piece. Very well made.

Great fit. Perfect for my application

5.0

6 years ago

Logan

North carolina

Verified

Used this on my 12v conversion on my 1951 Chevy 3/4 ton truck. For great

Awesome product delivery on time !

5.0

6 years ago

Flash

Bottom of the boot "Louisiana "

Verified

I installed this on a 1984 Isuzu diesel shrimp boat engine. Works perfectly

Would Recommend

yesw i would buy again

5.0

6 years ago

MR>ED

sweetwater tn..

Verified

nice quality

Would Recommend

Would buy again

3.0

7 years ago

Shelby

Ontario

Verified

Looks great, light weight, for 8ba flathead fitment had to be adjusted 5/8" backwards between alternator, pulley, and bracket.

The only place I could find one

5.0

8 years ago

Denbob

Olympia, Wa

Verified

Worked perfect. Did not buy alternator From you, too expensive.

Would Recommend

Yes

5.0

8 years ago

Old coger

Melbourne Australia

Verified

Happy wth all products from speedway motors

Would Recommend

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Showing 10 of 15 reviews

Questions & Answers

3 Questions • 4 Answers

Do you make a narrow belt pulley for the GM alternator? I have a flathead Ford with the short GM alternator (because I'm running 3 deuces) with the "Y" bracket and a pulley for a 5/8" belt. The crankshaft pulley to run the alternator is 3/8" narrow belt - so I need the narrow alternator pulley.

by Worms

• 9 years ago

1 answer

View Answer

what is the diam of this pulley?

by scott710

• 12 years ago

1 answer

View Answer

What is the ID of the hole?

by Honky

• 15 years ago

2 answers

View Answers

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

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 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

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

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