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370-amp Billet Elite Series Large Case alternator for early 5.9L Cummins ***BSTOCK ***

370-amp Billet Elite Series Large Case alternator for early 5.9L Cummins ***BSTOCK *** IS-B13302370B-BSTOCK mechman-bstock

370-amp Billet Elite Series Large Case alternator for early 5.9L Cummins ***BSTOCK ***

Was: $629.00
Now: $566.10
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SKU:
IS-B13302370B-BSTOCK
Availability:
Estimated lead time of 1-2 business days.
Weight:
16 LBS
VIP Shipping Options Available

*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.

The long-awaited BILLET Large Case Cummins Mechman alternator is finally here! After listening to our customers' needs and usage, we've developed the first and only LARGE CASE style alternator for the unbreakable 5.9 Cummins engines!

Why is a large case alternator better? Amperage output at idle/low RPM's, right where diesel engines like to operate the most! With nearly 200 amps just at idle and over 370 amps at driving RPM's this alternator is the most power single alternator you can install in the factory location. We're even able to use a near stock sized pulley so you don't even need to change your belt with the installation of this part number. It's a win after a win after a win!

This is mostly a plug and play operation and bolts in just like OEM. We do provide a 2pin wiring harness with this alternator for OEM fitments and detailed instructions on how to install in your vehicle. If you are needing higher voltage than what the OEM vehicle produces (13.9-14.4 volts), this alternator is already set up for external voltage control via our 91102RC "blue box" external voltage regulator. Again, this is NOT NEEDED in OEM applications but if you are needing higher volts you're set up for success from the start!