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S Series 320 Amp Alternator with 6.15" Bolt Pattern - POLISHED w/ March Pulley ***BSTOCK ***

S Series 320 Amp Alternator with 6.15" Bolt Pattern - POLISHED w/ March Pulley ***BSTOCK *** IS-BP572320P-M175-BSTOCK mechman-bstock

S Series 320 Amp Alternator with 6.15" Bolt Pattern - POLISHED w/ March Pulley ***BSTOCK ***

Was: $699.00
Now: $629.10
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SKU:
IS-BP572320P-M175-BSTOCK
Availability:
Estimated lead time of 1-2 business days.
Weight:
18 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 S series of 6 phase alternators offers incredibly low RPM 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. This 320-amp high output unit is specially designed to replace CS130 alternators with 6.15-inch center-to-center distance bolt patterns, as used by several aftermarket accessory drive manufacturers.

This unit includes a specially machined March performance 6 groove serpentine pulley, fan, and decorative cover already custom fitted to the alternator. A single wire on the provided pigtail gets connected to any ignition switched 12V+ source to turn the alternator on and off with the ignition switch. Simply run a properly sized positive and ground cable from the alternator to the terminals of the battery and the alternator will work perfectly, regardless of what kind of wiring harness you have.

The 1.75-inch diameter pulley 140+ amps as just 800 engine idle RPM with a 7" crankshaft pulley. Due to the high pulley ratio necessary for good charging at engine idle RPM, this unit is not recommended for use over 6,000 engine RPM.