Attention! This is a B-Stock, Display or Show Product

Mechman B-Stock alternators are factory-refurbished units that may have been lightly used, returned, or reconditioned. They may show minor cosmetic imperfections like scratches or finish blemishes but are fully tested to meet Mechman’s strict performance and reliability standards. These units deliver the same high-output performance as new alternators at a reduced price.

Ships in 7–10 business days (processing). “In Stock” means available in our inventory; it does not mean same-day shipping.

Warranty: B-Stock alternators include a 90-Day Functional Warranty only. Warranty covers performance (not cosmetics or labor), is non-transferable, and all sales are final — no returns or exchanges. An optional extended warranty is available beginning at $49.00.

Restrictions: No Modifications Allowed. No paint, pulley swaps, clocking, harness changes, or regulator upgrades. If customization is required, please purchase a new retail alternator.

Pricing: Standardized B-Stock pricing applies to all orders (web or phone). Not eligible for promotions, dealer/distributor discounts, or codes.

Returns/Warranty page add: B-Stock Alternators: 90-Day Functional Warranty only (performance coverage; cosmetic imperfections and labor are not covered). Warranty is non-transferable. All B-Stock sales are final no returns or exchanges.

This large case Denso hairpin alternator is a great bolt-in upgrade for DOHC Shelby GT500s. It features twin rectifiers, 12 large press fit diodes, and premium bearings for outstanding durability, far beyond what the original Ford alternator can provide. These units crank out 180+ amps at idle, with a full 250+ amps at vehicle cruising speed! Using a similar sized pulley as stock, you should be able to reuse your factory belt if mileage is below 36,000 depending on if you have not changed other pulleys).

The 6-phase hairpin alternator offers greater idle output and efficiency than your factory 2007-2008 unit. This is a stock replacement alternator for your 07-08 Shelby GT500. Highly recommended if you are running an aftermarket style fuel system with 2+ fuel pumps, larger heat exchanger fans and/or intercooler pumps.

Heavy duty 12 diode twin rectifier plates Improved air flow to ensure long life in severe conditions. This unit will ship with a near OEM sized pulley and this combination is suitable for stock and overdrive balancers. We highly recommend using all the OEM wiring and simply adding at least a 2-gauge power and ground wire from our alternator to your under-hood battery. If you are using a battery that is remounted in the trunk of the vehicle, 0-gauge connection wiring is highly suggested. In some year models, it may be necessary to enlarge the OEM power wire ring terminal hole to facilitate the larger output stud on our alternator.

***PLEASE NOTE ON SOME APPLICATIONS YOU WILL BE REQUIRED TO EXTEND YOUR OEM POWER CABLE APPX. 6 TO 8 INCHES WITH A PIECE OF 4- OR 6-GAUGE WIRE. SOME BUILD DATES HAVE BEEN FOUND TO VARY CABLE ROUTING AND ATTACHMENT POINTS. ***

This alternator has a two year warranty from the date of purchase, on a return for repair basis. See mechman.com for more details.