*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 3–5 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 $49.99.
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.
E Series
The Elite series 320 amp alternator offers great amperage output and durability at a great price. 6 phase technology, combined with massive twin rectifier assemblies and 12 huge diodes make these alternators totally durable for daily use. These impressive alternators produce 180+ at engine idle RPM and 320+ amps at cruising speeds HOT RATED. Like most high output alternators, this unit comes with a smaller diameter pulley, and will require a 1/2 inch to one inch shorter than stock length belt for proper belt tension in most applications.
RVC Bypass: These alternators use the more robust 4 pin style regulator than the OE 2 pin ECU controlled alternator. There is no extreme voltage fluctuation as this will bypass the RVC charging system on all 2005 > GM truck applications. Simply install the included 1 wire P101 harness to a tested 12v switched source and plug in the included P103 module into the vehicles 2 pin original alternator wiring harness. No check battery light, no computer controlled voltage swings. The voltage you want, when you want it!
Fitment Table
| Name | Model | Year(s) | Engine |
|---|---|---|---|
| Cadillac | Escalade | 2014 - 2019 | 6.2L |
| Chevrolet | Silverado 1500 / 2500 / 3500 | 2014 - 2018 | All Gas Engines |
| Chevrolet | Silverado 1500 / 2500 / 3500 | 2014 - 2018 | 6.6L Duramax |
| Chevrolet | Suburban | 2020 - 2018 | All Gas Engines |
| Chevrolet | Tahoe | 2014 - 2018 | All Gas Engines |
| GMC | Sierra 1500 / 2500 / 3500 | 2014 - 2018 | 4.3L / 5.3L |
| GMC | Sierra 1500 / 2500 / 3500 | 2014 - 2016 | 6.0L |
| GMC | Sierra 1500 / 2500 / 3500 | 2014 - 2018 | 6.2L |
| GMC | Sierra 2500 / 3500 | 2014 - 2018 | 6.6L Duramax |
| GMC | Yukon | 2014 - 2018 | All Gas Engines |
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. Not recommended for sustained use above 5,000 RPM engine speed. ((Check instructions section for finding belt sizes and wiring)). If you DO NOT use the correct shorter belt, this will result in very low to no output and create extra work load for the alternator.
