Alternator - Proform (66445.1N)
Sale Price$189.95
Description : Can you tell the difference? Most chrome alternators look nearly the same, and that's why what's on the inside is so critical. Reliability starts with how it's made. Choosing PROFORM means choosing alternators with components produced by highly specialized machines, assembled by highly trained personnel using dedicated jigs and equipment, with everything 100% new for maximum longevity and optimum performance. After assembly each alternator is individually tested at the factory. Finally, it's boxed with a quality assurance graph that documents the specific unit's output performance. We do the testing, not you! And PROFORM proves it!
Alternator
100 AMP Model
GM 10si 1 Wire Style With Internal Regulator
Machined Pulley
Chrome Finish
100% New
Products
Sold Individually
Chrome Alternator
New
1-Wire
100 Amp
Alternator
100 AMP
GM 1 Wire Style
Machined Pulley
Chrome Finish
100% New
Alternator
100 AMP Model
GM 10si 1 Wire Style With Internal Regulator
Machined Pulley
Chrome Finish
100% New
Products
Sold Individually
Chrome Alternator
New
1-Wire
100 Amp
Alternator
100 AMP
GM 1 Wire Style
Machined Pulley
Chrome Finish
100% New
- Return Policy
- Min. 12 Months
- Safe, Secure Checkout
Product Details
Description
Can you tell the difference? Most chrome alternators look nearly the same, and that's why what's on the inside is so critical. Reliability starts with how it's made. Choosing PROFORM means choosing alternators with components produced by highly specialized machines, assembled by highly trained personnel using dedicated jigs and equipment, with everything 100% new for maximum longevity and optimum performance. After assembly each alternator is individually tested at the factory. Finally, it's boxed with a quality assurance graph that documents the specific unit's output performance. We do the testing, not you! And PROFORM proves it!
Alternator
100 AMP Model
GM 10si 1 Wire Style With Internal Regulator
Machined Pulley
Chrome Finish
100% New
Products
Sold Individually
Chrome Alternator
New
1-Wire
100 Amp
Alternator
100 AMP
GM 1 Wire Style
Machined Pulley
Chrome Finish
100% New
Alternator
100 AMP Model
GM 10si 1 Wire Style With Internal Regulator
Machined Pulley
Chrome Finish
100% New
Products
Sold Individually
Chrome Alternator
New
1-Wire
100 Amp
Alternator
100 AMP
GM 1 Wire Style
Machined Pulley
Chrome Finish
100% New
Part Number (MPN)
66445.1N
Brand
SKU
66445.1N
UPC / GTIN
037995994519 / 00037995994519
Condition
New
Pulley Diameter
2 1/2 inch
Feature/Benefit
This alternator can be clocked to all four positions by the user.
Voltage
12 Volt
Wire Type
1-Wire
Applications
Chevy Small Block 305 to 350 Engines 1972 to 1987; Chevy Big Block 402 to 454 Engines 1970 to 1986; Pontiac 326 to 455 Engines 1962 to 1979; Oldsmobile 215 to 455 Engines 1963 to 1984; Buick 215 to 455 Engines 1963 to 1977
Category
Alternators
Finish
Chrome<br />Chrome
Part Type
Alternator
Regulator Type
Internal
Amperage Output
100 AMP
Case Style
10SI Style
AC Service Tap
No
Amperage Rating
100
Brushless
No
Case Circumference
17.5
Case Color
Chrome
Case Material
Aluminum
Decoupled Or Clutch Pulley
Yes
Distance Between Mounting Feet
6.133
Drive End To Pulley 1st Groove Distance
1.4
Drive End To Rotor Shaft End Distance
6
External Fan Included
Yes
External Regulator Included
Yes
Family
10SI Style
Fan Type
Internal
Ground Type
Positive
Mounting Type
Standard
One Wire Capable
Yes
Outside Pulley Diameter
2.621
Plug Clock Rear View Main Mounting Ear at 6 O Clock
12
Pulley Belt Type
V-Belt
Pulley Groove Quantity
0
Pulley Cogged Quantity
1
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|---|---|---|---|
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission
Shipping Policy
Operated by RevolutionParts Inc · Effective date: 11/2025 · Last updated: 4/2026... Check out our Shipping Policy for more details.
Return Policy
At PartsDirect.parts, operated by RevolutionParts Inc, we want you to be completely satisfied with your purchase. This policy outlines how to cancel orders, initiate returns, and receive refunds. Please read it carefully before completing your purchase... Check out our Return Policy for more details.