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Ignitions and Electrical› Charging Systems

Mechman

240 Amp High-Output Alternator

$464.00 $419.24 Save $44.76

SKU: 13546240

In Stock
In Stock
Ships by Nov 15
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The MechMan 240 amp alternator is a high-output charging system designed for Toyota Supra 2JZ and 1JZ engines. It features a 6-phase design with twin rectifiers and 12 massive press-fit diodes, offering a significant upgrade over the stock alternator's 8-diode rectifier. This unit utilizes hairpin stator technology for enhanced high-RPM durability and heat resistance.
Show original supplier description
The MechMan 240 amp alternator provides a substantial upgrade for Toyota Supra 2JZ and 1JZ engines, addressing the limitations of the factory-equipped charging system. This high-output unit features a 6-phase design with twin rectifiers and 12 massive press-fit diodes, surpassing the original alternator's 8-diode capacity. Its hairpin stator technology enhances durability at high RPMs and improves resistance to heat generated by turbo manifolds. This alternator is designed as a direct bolt-in replacement for the OEM unit. For optimal performance and function, a 2-gauge or larger positive and negative cable must be run between the alternator and the battery terminals. Additionally, a larger race pulley can be special-ordered for vehicles that operate consistently above 7,500 RPM. This alternator is compatible with various Lexus and Toyota models including the Lexus GS300 (1993-1997, 3.0L), GS400 (1998-2000, 4.0L), SC300 (1992-2000, 3.0L), SC400 (1995-2000, 4.0L), and Toyota Supra (1993-1998, 3.0L). Note that specific applications, such as motor swaps, may require additional consideration or may not utilize all factory wiring. It is important to note that all MechMan alternators are made to order, with an approximate lead time of 2 weeks.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMechman
Part Number13546240
CategoryIgnitions and Electrical
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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