Tuff Stuff Performance Silver Bullet Stealth Black Alternators

4.38 out of 5 stars 152 Customer Reviews

Tuff Stuff Performance Silver Bullet stealth black alternators feature exclusively developed high-tech rotors and stators, built with higher copper and steel conten

Tuff Stuff Performance Silver Bullet stealth black alternators feature exclusively developed high-tech rotors and stators, built with higher copper and steel content, to deliver the greatest output with the best reliability. Ultra low cut-in voltage regulators keep the extra amps flowing in low-idle situations, and a real one-wire hookup simplifies the installation of these alternators. Featuring a billet aluminum fan and your choice of a serpentine or V-groove pulley to give them over-the-top styling. They also have the highest quality neoprene-sealed bearings for long life. These alternators are finished with an ex

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Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7140FBULL

Alternator, Black Powdercoated, 140 Amps, V-Belt, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TFF-7140FBULL

4.74 out of 5 stars ( 39 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7069FBULL

Alternator, Black Powdercoated, 140 amps, V-Belt, Ford, Lincoln. Mercury, Each

Part Number: TFF-7069FBULL

4.19 out of 5 stars ( 37 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7069FBULL6G

Alternator, Black Powdercoated, 140 Amps, Serpentine, Ford, Lincoln, Mercury, Each

Part Number: TFF-7069FBULL6G

3.83 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7139FBULL

Alternator, Black, 100 Amps, V-Belt, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: TFF-7139FBULL

4.89 out of 5 stars ( 18 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7068FBULL

Alternator, Internal Regulator, 100 Amp, One Wire, V-Belt, Black Powdercoated, Ford, L4/L6/V6/V8, Each

Part Number: TFF-7068FBULL

3.86 out of 5 stars ( 7 )

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

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Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 7068

4.5 out of 5 stars ( 207 )

Estimated Ship Date: Monday 1/12/2026

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Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7140FBULL6G

Alternator, Black Powdercoated, 140 Amps, Serpentine, Buick, Chevy, GMC, Oldsmobile, Pontiac

Part Number: TFF-7140FBULL6G

3.4 out of 5 stars ( 10 )

Estimated Ship Date: Monday 1/12/2026

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Estimated Ship Date: Monday 1/12/2026

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7140FBULL12

Alternator, Performance, Silver Bullet, High Amp, GM 10si Case Style, 12 V, 140 Amps, Black Powdercoated, V-Belt Pulley, Each

Part Number: TFF-7140FBULL12

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7068FBULL6G

Alternator, Internal Regulator, 100 Amp, One Wire, Serpentine, Black Powdercoated, Ford, L4/L6/V6/V8, Each

Part Number: TFF-7068FBULL6G

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Powermaster Race Alternators 8-47100

4.5 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/12/2026

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Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7140FBULL9

Alternator, Performance, Silver Bullet, High Amp, GM 10si Case Style, 12 V, 140 Amps, Black Powdercoated, V-Belt Pulley, Each

Part Number: TFF-7140FBULL9

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7139FBULL6

Alternator, Performance, Silver Bullet, High Amp, GM 10si Case Style, 12 V, 100 Amps, Black Powdercoated, V-Belt Pulley, Each

Part Number: TFF-7139FBULL6

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7139FBULL6G

Alternator, Silver Bullet, GM 10si, 12V, 100 amps, Black, Serpentine Pulley, Buick, Chevy, Oldsmobile, Pontiac

Part Number: TFF-7139FBULL6G

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7139FBULL9

Alternators and Generators, Silver Bullet Stealth Black Alternators, GM 10si Case Style, 12 V, 100 amps, Black Powdercoat, V-belt Pulley, Chevy, Each

Part Number: TFF-7139FBULL9

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7139FBULL12

Alternator, Performance, Silver Bullet, High Amp, GM 10si Case Style, 12 V, 100 Amps, Black Powdercoated, V-Belt Pulley, Each

Part Number: TFF-7139FBULL12

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Stealth Black Alternators 7140FBULL6

Alternator, Performance, Silver Bullet, High Amp, GM 10si Case Style, 12 V, 140 Amps, Black Powdercoated, V-Belt Pulley, Each

Part Number: TFF-7140FBULL6

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

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