Tuff Stuff Performance Silver Bullet Alternators

4.54 out of 5 stars 142 Customer Reviews

Tuff Stuff Performance Silver Bullet alternators feature high-tech rotors and stators, built with elevated copper and steel content, to deliver the greatest output

Tuff Stuff Performance Silver Bullet alternators feature high-tech rotors and stators, built with elevated 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 (most models) simplifies the installation of these alternators. Silver Bullet alternators have a billet aluminum fan and your choice of a serpentine or V-groove pulley to give them over-the-top styling. They also feature the highest quality neoprene-sealed bearings for long life. Order the model recommended for fitme

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Tuff Stuff Performance Silver Bullet Alternators 7139ABULL

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

Part Number: TFF-7139ABULL

4.54 out of 5 stars ( 26 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7068ABULL6G

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

Part Number: TFF-7068ABULL6G

3.75 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7068ABULL

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

Part Number: TFF-7068ABULL

4.38 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7140ABULL

Alternator, 140 Amp, 1-Wire, Chrome, V-Belt, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: TFF-7140ABULL

5.0 out of 5 stars ( 16 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7068BBULL

Alternator, Polished, 100 Amp, 1-wire, V-Belt, Ford, Mercury, Each

Part Number: TFF-7068BBULL

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7140BBULL6G

Alternator, Polished, 140 Amp, 1-Wire, Serpentine, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TFF-7140BBULL6G

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7935ABULL6G

Alternator, Chrome, 160 Amps, Chrome, Center Offset, Serpentine, Chevy, GMC, Each

Part Number: TFF-7935ABULL6G

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7068FBULLBLU

Alternators, Silver Bullet, GM 10SI/10DN/12SI, 12 V, 100 amps, Blue Powdercoated, V-belt Pulley, Ford, Lincoln, Mercury, Each

Part Number: TFF-7068FBULLBLU

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7068BBULL6G

Alternator, Polished, 100 Amp, 1-wire, Serpentine, Ford, Mercury, Each

Part Number: TFF-7068BBULL6G

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

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Tuff Stuff Performance High-Amp Output Factory Cast-Plus Alternators 70686G

4.75 out of 5 stars ( 47 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7139BBULL6G

Alternator, Polished, 100 Amps, Serpentine, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TFF-7139BBULL6G

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139BBULL9

Alternators and Generators, Silver Bullet Alternators, GM 10si Case Style, 12 V, 100 amps, Polished, V-belt Pulley, AMC, Buick, Chevy, GMC, Jeep, Olds

Part Number: TFF-7139BBULL9

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139BBULL

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

Part Number: TFF-7139BBULL

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

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

4.75 out of 5 stars ( 26 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7139FBUL6G12

Alternator GM alternator Silver Bullet 100 amp 1-wire or OEM, stealth black, 6 groove pulley, 12 clocking

Part Number: TFF-7139FBUL6G12

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139FBULLBLU

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

Part Number: TFF-7139FBULLBLU

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139FBULLRED

Alternators, Silver Bullet, GM 10SI/10DN/12SI, 12 V, 100 amps, Red Powdercoated, V-belt Pulley, Buick, Chevy, GMC, Jeep, Oldsmobile, Pontiac, Each

Part Number: TFF-7139FBULLRED

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139FBULLY

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

Part Number: TFF-7139FBULLY

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139FBULLOR

Alternators, Silver Bullet, GM 10SI/10DN/12SI, 12 V, 100 amps, Orange Powdercoated, V-belt Pulley, Buick, Chevy, GMC, Jeep, Oldsmobile, Pontiac, Each

Part Number: TFF-7139FBULLOR

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7068ABULL7

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

Part Number: TFF-7068ABULL7

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7140ABULL12

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

Part Number: TFF-7140ABULL12

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7140ABULL6

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

Part Number: TFF-7140ABULL6

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7140ABUL6G12

Alternators, Silver Bullet, GM 10SI/10DN/12SI, 12 V, 140 amps, Chrome Plated, Serpentine Pulley, AMC, Buick, Chevy, GMC, Jeep, Olds, Pontiac, Each

Part Number: TFF-7140ABUL6G12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139BBULL12

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

Part Number: TFF-7139BBULL12

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139BBULL6

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

Part Number: TFF-7139BBULL6

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139ABULL6

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

Part Number: TFF-7139ABULL6

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Tuff Stuff Performance Silver Bullet Alternators 7139ABULL12

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

Part Number: TFF-7139ABULL12

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

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