631-130086 Mack Alternator Relay | Nartron 1300-8-6 (1301) | New Genuine OEM

631-130086 | Nartron Alternator Relay Switch | Mack 1300-8-6 / 1301 | New Genuine (NOS)

New genuine Nartron alternator relay switch, part number 631-130086, also referenced as 1300-8-6 and 1301. OEM electrical relay designed to manage alternator field control and support proper charging-circuit operation in compatible Mack truck electrical systems. Commonly used in select Mack truck charging and electrical system applications. New old stock (NOS) – unused and in excellent condition. In stock and ready to ship from Discount Parts Exchange (DPX), Mansfield, Ohio.

Call for pricing & availability: 419-522-3320.

Specs & Features

• Part Number: 631-130086
• Manufacturer: Nartron
• Type: Alternator Relay Switch
• Alternate Numbers: 1300-8-6, 1301
• Function: Alternator field control and charging-circuit relay operation
• Condition: New Genuine (NOS)
• Application: Charging and electrical systems on select Mack truck models

What’s Included

• (1) Nartron Alternator Relay Switch – 631-130086 / 1300-8-6
• OEM relay switch as supplied
• No hardware included unless noted

Fitment Notes

• Used in compatible Mack truck alternator and charging-system circuits
• Confirm part number, wiring configuration, relay function, and electrical system compatibility before ordering
• Verify all specifications before installation

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Shipping / Location

• Ships from Mansfield, Ohio warehouse (419-522-3320)
• Warehouse Bin Location: DPX_OH_BR549_MACK

Ohio’s Premier Heavy-Duty Drivetrain Rebuilder — Built to Perform. Trusted to Last. Discount Parts Exchange (DPX).