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Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators

4.54 out of 5 stars 733 Customer Reviews

A Tuff Stuff Performance high-amp output factory cast-plus alternator is just what every ride needs. These units produce the most power at idle to keep your battery fully charged at all times. Tuff Stuff products are hand-built with the best bearings, diodes, and copper windings available; and the cast-plus finish is applied in the company's Cleveland, Ohio factories. This leaves a natural cast look but offers extreme durability from pitting. The alternators are available in a variety of amperages, case and pulley styles for fitment on thousands of specific vehicle applications.

Results 1 - 6 of 6

Alternator, Performance, High Amp, GM 10DN Case Style, 12 V, 100 Amps, Natural, V-Belt Pulley, Each

Part Number: TFF-7102C

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Alternator, Natural Finish, 80 Amps, V-Belt, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: TFF-7102

4.13 out of 5 stars ( 16 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Alternator, Performance, High Amp, GM 10si Case Style, 12 V, 140 Amps, Natural, V-Belt, Each

Part Number: TFF-7127K6

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Alternator, Performance, High Amp, GM 10si Case Style, 12 V, 100 Amps, Natural, Serpentine Pulley, Each

Part Number: TFF-7127D6G12

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Alternator, Performance, High Amp, GM 10si Case Style, 12 V, 100 Amps, Natural, V-Belt Pulley, Each

Part Number: TFF-7127D6

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Alternator, Performance, High Amp, GM 10si Case Style, 12 V, 140 Amps, Natural, Serpentine, Each

Part Number: TFF-7127K6G12

4.5 out of 5 stars ( 2 )

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

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