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.

Showing In Stock Items. Show All 17 Items.

Results 1 - 17 of 17

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7127D12

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

Part Number: TFF-7127D12

4.96 out of 5 stars ( 26 )

Estimated Ship Date: Monday 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7102C

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 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7127K6G

Alternator, Natural, 140 Amp, Serpentine Pulley, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TFF-7127K6G

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Monday 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7102

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 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7290ND

Alternator, Performance, High Amp, GM CS144 Case Style, 12 V, 250 Amps, Natural, V-Belt Pulley, Each

Part Number: TFF-7290ND

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7127D6G

Alternator, Natural, 100 Amp, Serpentine Pulley, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TFF-7127D6G

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7127K6

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: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7127D6G12

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 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7127D6

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: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7127K6G12

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: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 8112NK

Alternator, Performance, High Amp, GM CS144 Case Style, 12 V, 250 Amps, Natural, Serpentine Pulley, Each

Part Number: TFF-8112NK

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Tuff Stuff Performance High-Amp Output Stealth Black Alternators 8112NF

4 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/2/2026

...Loading

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7290ND6G

Alternator GM alternator large case 250 amp OEM wire, 1980-95 as cast, 6 groove pulley

Part Number: TFF-7290ND6G

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7290NC

Alternator, Performance, High Amp, GM CS144 Case Style, 12 V, 217 Amps, Natural, V-Belt Pulley, Each

Part Number: TFF-7290NC

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 8292C

Alternator, Internal Regulator, GM AD244, 230 Amps, 12 Volts, Natural, GM, Each

Part Number: TFF-8292C

Not Yet Reviewed

Estimated Ship Date: Monday 2/2/2026

...Loading

Estimated Ship Date: Monday 2/2/2026

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 8112ND

Alternator, Performance, High Amp, GM CS144 Case Style, 12 V, 170 Amps, Natural, Serpentine Pulley, Each

Part Number: TFF-8112ND

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 8292B

Alternator, Internal Regulator, GM AD244, 180 Amps, 12 Volts, Natural, GM, Each

Part Number: TFF-8292B

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7290NC6G

Alternator, Performance, High Amp, GM CS144 Case Style, 12 V, 170 Amps, Natural, Serpentine Pulley, Each

Part Number: TFF-7290NC6G

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 30, 2026 if ordered today

Page 1 of 1