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 7866ABULL6G

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

Part Number: TFF-7866ABULL6G

4.67 out of 5 stars ( 6 )

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 7860BBULL6G

Alternator, Silver Bullet, GM CS130 Case, 12 V, 160 amps, Polished, Serpentine, Right Offset, Chevy, GMC, 2.5L, 2.8L, Each

Part Number: TFF-7860BBULL6G

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 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 7140ABULL6G

Alternator, Chrome, 140 amps, Serpentine, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TFF-7140ABULL6G

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7861F6G22

Alternator, Bullet Fan, 6 Groove Pulley, 160 amp, Chrome, 1-Wire or OEM Hookup, Left Offset, GM, Each

Part Number: TFF-7861F6G22

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Tuff Stuff Performance Silver Bullet Alternators 7866FP6G22

Alternator, Bullet Fan, 6 Groove Pulley, 160 amp, Polished, 1-Wire or OEM Hookup, Center Offset, GM, Each

Part Number: TFF-7866FP6G22

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 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 7935ABULL

Alternator, Chrome, 160 Amp, V-Belt, Center Offset, Chevy, GMC, Each

Part Number: TFF-7935ABULL

5.0 out of 5 stars ( 2 )

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 7140BBULL

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

Part Number: TFF-7140BBULL

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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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

Need It Sooner? We recommend these similar substitute parts:

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 7140ABULL6G7

Alternator, Black Chrome, 140 amps, Serpentine, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TFF-7140ABULL6G7

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 7139ABUL6G12

Alternators and Generators, Silver Bullet Alternators, GM 10si Case Style, 12 V, 100 amps, Chrome, Serpentine Pulley, AMC, Chevrolet, GMC, Jeep, Each

Part Number: TFF-7139ABUL6G12

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 7140ABULL9

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

Part Number: TFF-7140ABULL9

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

Tuff Stuff Performance Silver Bullet Alternators 7140ABULL7

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

Part Number: TFF-7140ABULL7

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 7860ABULL

Alternator, Silver Bullet, GM CS130 Case, 12 V, 160 amps, Chrome, V-belt Pulley, Right Offset, Chevy, GMC, 2.5L, 2.8L, Each

Part Number: TFF-7860ABULL

4.0 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 7860ABULL6G

Alternator, Silver Bullet, GM CS130 Case, 12 V, 160 amps, Chrome, Serpentine, Right Offset, Chevy, GMC, 2.5L, 2.8L, Each

Part Number: TFF-7860ABULL6G

1.0 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 7860BBULL

Alternator, Silver Bullet, GM CS130 Case, 12 V, 160 amps, Polished, V-belt Pulley, Right Offset, Chevy, GMC, 2.5L, 2.8L

Part Number: TFF-7860BBULL

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 7860F6G22

Alternator, CS130, 160 Amp, Chrome, Serpentine, Right Offset, Each

Part Number: TFF-7860F6G22

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 7866ABULL

Alternator, Chrome, 160 Amps, V-Belt, Center Offset, Chevy, Pontiac, Each

Part Number: TFF-7866ABULL

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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