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SKU:
NLT1F02254
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8M0006034 18-5743 Regulator Rectifier for Mercury 30-125 HP Outboards
$25.99
In Stock
$25.99
Sale price
$25.99
Regular price
Replace a matching six-wire Mercury outboard regulator rectifier with an aftermarket unit referencing 8M0006034 and 18-5743.
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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
- Select Mercury 30-125 HP outboards using 8M0006034
- Select Mercury and Mariner outboards using 883072T
- Applications using the same six-wire 815279-3-style regulator
- Engines using 8M0084173 with matching connectors
Product Overview
This is the style many owners find after diagnosing a dead battery, fluctuating tachometer, or charging voltage outside the normal range. It is used across a wide horsepower range, but only on engines with the same six-wire connector arrangement.
Do not order by the 30-125 HP headline alone. Mercury serial number, stator system, plugs, and original part number determine the correct regulator.
This is an aftermarket replacement part and is not manufactured or supplied by the original equipment brand.
Key Features & Performance
- Six-wire regulator rectifier for compatible Mercury and Mariner outboards
- Replaces 8M0006034 and Sierra 18-5743
- Common 883072T / 8M0084173 replacement family
- Converts stator AC and regulates battery charging output
Replaces Part Numbers
- 8M0006034
- 18-5743
- 883072T
- 8M0084173
- 815279-3
- 815279T
Common Uses
- Repairing a no-charge condition after stator testing
- Correcting excessive charging voltage
- Replacing a burned or cracked regulator
- Addressing a charging-related tachometer issue after diagnosis
Technical Specifications
- Product Type: Voltage regulator rectifier
- Wire Configuration: Six wire, as applicable
- Horsepower Range: Select 30-125 HP Mercury applications
- Replacement Type: Aftermarket
Installation & Fitment
- Disconnect the battery
- Match the original part number and all connectors
- Test stator windings and grounds before replacement
- Clean the mounting surface and repair overheated plugs
- Check battery voltage through the operating range after installation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Model names alone may not guarantee fitment. Compare the original component, reference number, connector or mounting design, dimensions, and any serial-number or production-date break before purchase.
Frequently Asked Questions
Q: Will it fit any Mercury from 30 to 125 HP? A: No. That is an application range; the part number and six-wire layout must match.
Q: Is 18-5743 the same reference family? A: Yes, it is commonly cross-referenced with 8M0006034 for matching applications.
Q: What else can cause no charging? A: A bad battery, stator, ground, fuse, or damaged connector can cause the same complaint.
Part Summary
keywords: 8M0006034 regulator rectifier, 18-5743 Mercury replacement, 883072T charging module, Mercury 30-125 HP rectifier, six wire outboard regulator, 8M0084173 aftermarket
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.