Proform has a wide variety of alternators to choose from. Take your pick from remanufactured to 100% Brand New, 1-wire or standard, chrome or non-chrome, stock amps to 140 amps. If you just want a chrome alternator housing, they have that too. Top that off with the best economical value for the quality of most manufacturers and Proform’s alternators are hard to beat. The quality of Proform alternators are up to GM® standards and Proform makes chrome alternators for GM®.
Note: More parts will be added as time permits. If you don’t see the Proform part you are looking for, give us a call and if we don’t have it in stock, we will try to get it for you. We have much more Proform parts in stock then we have time to put on our web site.
Updated 04-11-2006.
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Proform Index Page
Air Cleaners
Air Cleaner Parts
Alternators
Alternator Brackets
Breather Caps, Oil Filler Tube
Carburetors
Carburetor Metering Blocks
Carburetor Main Bodies
Carb Throttle Base Plate
Dampers / Balancers
Damper / Balancer Covers
Differential Covers
Distributors
Distributor Parts
Dress-Up Kits
Engine & Trans Dipsticks
Fuel Pump Block Off Plates
Master Cylinder Covers
Oil Filler Caps
Rocker Arms
Starters
Tachometers
Timing Tabs
Timing Covers
Transmission Oil Pans
Valve Covers
Valve Cover Parts
Water Necks
Water Pumps (Electric)
Wire Looms & Dividers
Chevy Performance Proform Price Sheet (Excel File) Order Free Proform Catalog

Part Number Description Picture
66445N Chrome - Available completely assembled and ready to bolt on. 100% New, fits GM® 1973-1986 internal regulator. Each unit is individually tested to insure proper output and reliability. The same affordability as our popular re-built models! Each unit is supplied with its own individual Quality Assurance graph documenting its performance. These models are identified with the same part numbers as the re-built’s they match, but with the suffix “N” and they come with the Machined Pulley.
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66445.1N Chrome - 100 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with 100% New components, and then individually tested to insure proper output and reliability. Beautifully chrome plated. 1-wire alternators can be used in place of alternators with external regulator. The same affordability as our popular re-built models! Each unit is supplied with its own individual Quality Assurance graph documenting its performance. These models are identified with the same part numbers as the re-built’s they match, but with the suffix “N” and they come with the Machined Pulley. Alternator

66445.8N Chrome - 80 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with 100% New components, and then individually tested to insure proper output and reliability. Beautifully chrome plated. 1-wire alternators can be used in place of alternators with external regulator. The same affordability as our popular re-built models! Each unit is supplied with its own individual Quality Assurance graph documenting its performance. These models are identified with the same part numbers as the re-built’s they match, but with the suffix “N” and they come with the Machined Pulley.
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Alternator

66445.6N Chrome - 60 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with 100% New components, and then individually tested to insure proper output and reliability. Beautifully chrome plated. 1-wire alternators can be used in place of alternators with external regulator. The same affordability as our popular re-built models! Each unit is supplied with its own individual Quality Assurance graph documenting its performance. These models are identified with the same part numbers as the re-built’s they match, but with the suffix “N” and they come with the Machined Pulley.
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Alternator

Part Number Description Picture
66438 Regular - 100 AMP GM® alternator. GM® internal regulator. Available for about 1/2 the cost of competitive models, these reliable internal-fan units are compact and powerful, use existing mounting brackets and electrical hook-up.
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Alternator

66439 Chrome - 100 AMP GM® alternator. GM® internal regulator. Available for about 1/2 the cost of competitive models, these reliable internal-fan units are compact and powerful, use existing mounting brackets and electrical hook-up.
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Alternator

Part Number Description Picture
66444 Chrome - Available completely assembled and ready to bolt on. 100% new (except for heavy duty rotor), fits GM® 1966-1972 external regulator (except 70 amp.). Each unit is individually tested to insure proper output and reliability.
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Alternator

66445 Chrome - Available completely assembled and ready to bolt on. 100% new (except for heavy duty rotor), fits GM® 1973-1986 internal regulator. Each unit is individually tested to insure proper output and reliability.
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Alternator

Part Number Description Picture
66445.14 Chrome - 140 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with all-new components (except for heavy duty rotor), and then individually tested to insure proper output and reliability. Beautifully chrome plated. 1-wire alternators can be used in place of alternators with external regulator.
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Alternator

66445.1 Chrome - 100 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with all-new components (except for heavy duty rotor), and then individually tested to insure proper output and reliability. Beautifully chrome plated. 1-wire alternators can be used in place of alternators with external regulator. Alternator

66445.8 Chrome - 80 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with all-new components (except for heavy duty rotor), and then individually tested to insure proper output and reliability. Beautifully chrome plated. 1-wire alternators can be used in place of alternators with external regulator.
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Alternator

66445.6 Chrome - 60 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with all-new components (except for heavy duty rotor), and then individually tested to insure proper output and reliability. Beautifully chrome plated. 1-wire alternators can be used in place of alternators with external regulator.
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Alternator

66904 Satin Finish - Higher-amp stock replacement 70 AMP, fits GM Internal Regulator, 1966-86. The GM style 1-wire hook-up makes for easy installation. Assembled with all-new components (except for heavy duty rotor), and then individually tested to insure proper output and reliability. 1-wire alternators can be used in place of alternators with external regulator. (No Chrome)
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Alternator