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12_b12a1feb-12eb-470a-ba50-67433e459fa9 - Northline Parts

Rotating Diode B-525570-1 B-525570-2 for Marathon Generator 570 Series

SKU: NLT2T01223
$112.89 In Stock
$112.89
Sale price  $112.89 Regular price 
Ships for free in 2–4 business days.
This is a replacement rotating diode assembly for Marathon Generator 570 Series; replaces B-525570-1, B-525570-2.
Estimated delivery between
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
Marathon Generator 570 Series

Product Overview

Low or unstable generator output can result from failed rotating rectifier diodes after the AVR, field windings and excitation circuit are checked.

This replacement diode assembly restores rectification in compatible Marathon 570-series generator rotors. Match B-525570-1 / B-525570-2 and alternator configuration before installation.

Key Features & Performance

  • Replacement rotating diode assembly for the listed application
  • Intended to restore the original function when diagnosis or inspection confirms the existing part is worn, damaged or failed
  • Match the original part number, mounting and connections before installation
  • Replaces or cross-references B-525570-1, B-525570-2

Replaces / Cross-References

  • B-525570-1
  • B-525570-2

What Is Included

1 replacement component for this SKU unless the product images or option selection state otherwise.

Fitment Notes

Match the original part number, machine or engine model, mounting points, connector or hose/fitting style, and any serial-number restrictions before ordering. When a manufacturer uses multiple revisions within the same model family, the equipment serial number and original component should be the final fitment check.

Frequently Asked Questions

Is this a genuine OEM part?
No, unless the product page specifically states otherwise. This listing is for a replacement, accessory, upgrade or repair component as described above. OE and interchange numbers are provided for identification and fitment reference.

How should I verify fitment before ordering?
Compare the original part number, machine or engine model, mounting arrangement and electrical, fuel or hydraulic connections with the information above. For equipment parts, also verify the machine serial number whenever the manufacturer catalog uses serial breaks.

Part Summary

Keywords: rotating diode assembly, Marathon Generator 570 Series, B-525570-1, B-525570-2.

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