Mechman 11324240 240A 6-Phase 07-12 Toyota FJ Cruiser/Sienna 4.0 Alternator


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SKU: MECH-11324240 Category:

Mechman 11324240 Alternator

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The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. These units are available for a broad range of domestic and import applications in 170, 240, or 320 amp configurations. The 240 amp model offers the best balance between peak output, and output at engine idle RPM.

Installation Notes:
This unit comes equipped with a smaller 1.75 inch diameter alternator pulley, and will require a slightly shorter drive belt for proper belt tension.

Tech Specs

  • 240 amp alternator
  • Hand Built in the United States
  • Each Alternator is Tested and Quality Inspected Before Leaving Manufacturere
  • For use with select 2007-2012 Toyota vehicles
  • Cast aluminum construction
  • Cutting edge 6 phase hairpin epoxy reinforced stator technology
  • Improves durability
  • Increases high RPM stability
  • Oversized charge post ensure sturdy cable connections
  • Premium low-drag bearings
  • Ultra precision balanced rotor
  • Provides 20,000 RPM capability
  • Twin solid copper rectifiers with 12 press fit high amp diodes to spread out heat
  • 15% more efficient than typical alternators
  • Wastes less horsepower in the form of heat
  • Precision pulley machined from bar stock


  • Toyota
    • 2007 – 2012 FJ Cruiser w/ 4.0L Engine
    • 2007 – 2012 Sienna w/ 3.5L Engine
Weight 20 lbs
Alternator Amperage

Alternator Series

Amp Hours (AH)