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

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#91016251

GM Alternator 5/8 Inch Wide Belt Pulley, Chrome

  • Adapts GM alternator to original 5/8" belt
  • Durable and attractive chrome finish
  • Fits 1963 and newer GM alternators
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Finish:

Chrome

AluminumPlain

$39.99

/each

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Product Summary

2.89" Overall Diameter, V-Belt Belt Type, Steel, Chrome

  • Adapts GM alternator to original 5/8" belt
  • Durable and attractive chrome finish
  • Fits 1963 and newer GM alternators
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Key Specs

MFG. Part #91016251
BrandSpeedway Motors
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Speedway Motors 91016251 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 chrome pulley is designed to fit on a GM alternator and use a 5/8" drive belt.

  • Allows the use of 5/8" wide flathead-style belts on popular GM externally regulated, "SI" and one-wire alternators
  • Durable and attractive chrome finish
  • Fits 1963 and newer GM alternators

 

Speedway Motors 91016251 Specifications

KEY SPECS
MFG. Part #91016251
BrandSpeedway Motors
GENERAL
Overall Diameter2.89"
Belt TypeV-Belt
Overall Thickness1.30"
Belt Width.63"
Material TypeSteel
Inside Diameter.67"
Groove Count1
FinishChrome
Sold in QuantityEach

Ratings & Reviews

5

6 Reviews

Overall Assessment

Customers consistently praise the product's high quality and effortless installation process. Eminent features include its wide compatibility, suited perfectly for 53 flatheads and V12 flatheads. The width of the new pulley offers a precise fit from customer experiences. This part's performance stands out to users who have made repeat purchases. Aesthetically, the product's chrome adds appeal, being a snug match for a flathead 12-volt conversion. Undeniably, the product outshines its competitors regarding quality, practicality, and usability, hence inspiring strong customer loyalty.

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5

6 reviews

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6

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Filter by Ratings

Wide pulley

5.0

5 years ago

Kent

Nh

Verified

Works great and fits perfect in 53 flathead

Would Recommend

Yes

5.0

6 years ago

Freddy

Chattanooga YN

Verified

The new pully was the correct width

i have bought this part before and buying it again thanks

5.0

6 years ago

Zephyr Guy

Whittier Ca.

Verified

product works great on my V12 flat heads

Would Recommend

worked great, great service

5.0

9 years ago

dennis

Gig Harbor WA

Verified

easy to install

Would Recommend

looked good worked good

5.0

10 years ago

Rick

Lake Havasu City Az.

Verified

just what I needed for the flathead

Would Recommend

the chrome looks great!!!

5.0

11 years ago

Custer1

Undisclosed

Verified

This pulley fit perfectly on my chrome alternator. It's a perfect match for a flathead 12 volt conversion.

Would Recommend

Showing 6 of 6 reviews

Questions & Answers

1 Question • 1 Answer

Will this fit a Power Master Alternator?

by David O

• 14 years ago

1 answer

View Answer

1 of 1 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

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  • 239 Ford Flathead V8

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  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

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  • 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

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  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

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  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

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  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

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  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

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  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

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  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

Customer Impersonation Script