MechMan S Series Alternators

4.52 out of 5 stars 31 Customer Reviews

MechMan S Series 6-phase alternators offer incredible output in a compact and durable package. The 240 amp models offer the best balance between peak output, and ou

MechMan S Series 6-phase alternators offer incredible output in a compact and durable package. The 240 amp models offer the best balance between peak output, and output at engine idle RPM; while the 320 amp models are all about max power and not designed to charge at low idle speeds. Both S Series alternators feature 12 diodes, twin rectifier plates, and outstanding airflow ensure long service life, even in severe conditions. These units come equipped with a smaller 1.75 in. diameter alternator pulley, and will require a slightly shorter drive belt to be installed for proper belt tension. Order the model recommended

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MechMan S Series Alternators 7127240B

Alternator, S Series, 12 V, 240 amps, Black, Satin Finish, One Wire, Serpentine Pulley, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: MEH-7127240B

3.5 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 7127240P

Alternator, S Series Alternator, 12 V, 240 amps, Polished, One Wire, Serpentine Pulley, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: MEH-7127240P

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 7127320P

Alternator, S Series Alternator, 12 V, 320 amps, Polished, Serpentine Pulley, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: MEH-7127320P

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 7127170B

MechMan S Series Alternators 7127170B

Alternators and Generators, S Series Alternators, 12 V, 170 amps, Black, Satin Finish, Serpentine Pulley/V-Pulley, Buick, Cadillac, Chevy, GMC, Each

Part Number: MEH-7127170B

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 8165240B

240 Amp 6 Phase 88-95 GM Truck High Output Alternator Black Finish

Part Number: MEH-8165240B

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 7127320B

Alternator, S Series Alternator, 12 V, 320 amps, Black, Serpentine Pulley, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: MEH-7127320B

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 7127170C

Alternators and Generators, S Series Alternators, 12 V, 170 amps, Chrome, Serpentine/V-Belt Pulley, Buick, Cadillac, Chevy, GMC, Pontiac, Each

Part Number: MEH-7127170C

2.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 7127320

Alternator, S Series Alternator, 12 V, 320 amps, Natural, Serpentine Pulley, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: MEH-7127320

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 7127170P

Alternators and Generators, S Series Alternators, 12 V, 170 amps, Polished, Serpentine Pulley/V-Belt, Buick, Cadillac, Chevy, GMC, Oldsmobile, Each

Part Number: MEH-7127170P

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators 8165240P

240 Amp 6 Phase 88-95 GM Truck High Output Alternator Polished Finish

Part Number: MEH-8165240P

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MechMan S Series Alternators 8287240

240 amp alternator for early GM front wheel drive V6 car

Part Number: MEH-8287240

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MechMan S Series Alternators B81657240P

Billet 240A racing alternator 88-95 GM truck mount - Polished

Part Number: MEH-B81657240P

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MechMan S Series Alternators 11183240

240 amp alternator for GM late front wheel drive V6

Part Number: MEH-11183240

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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MechMan S Series Alternators for 2006-2011 DTS, LUCERNE - 11178240

S Series 240 amp alternator for 4.6L Cadillac Lucerne

Part Number: MEH-11178240

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MechMan S Series Alternators for 2009-2011 LUCERNE - 11367240

240 amp high output alternator for Buick Lucerne 3.9L

Part Number: MEH-11367240

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MechMan S Series Alternators B81657240M

S Series 240A racing alt - replaces L mount CS130 - Machined

Part Number: MEH-B81657240M

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MechMan S Series Alternators B81657240C

240A racing alternator 88-95 GM truck mount - Chrome

Part Number: MEH-B81657240C

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MechMan S Series Alternators for 2005-2008 GRAND PRIX, 2008-2009 LACROSSE, 2006-2007 MONTE CARLO - 11179240

S Series 240 amp alternator for 5.3L FWD GM Car

Part Number: MEH-11179240

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

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