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SKU:
NLT2D07398
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Kohler 15A 3-Pin Voltage Regulator Rectifier 41-403-09
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
Aftermarket 12-volt, 15-amp, three-pin voltage regulator rectifier for compatible Kohler engines and John Deere equipment using 41-403-09, 4140309, or matching references.
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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
- Kohler CH11-CH25 engines using 41-403-09-style regulator
- Kohler CH410, CH430, and CH450 applications using the listed regulator
- Compatible Kohler CV, K, and KT engine applications with matching 15A three-pin system
- John Deere equipment originally using AM102596 or matching regulator layout
Product Overview
If the battery keeps going flat, charging voltage jumps too high, or lights brighten and dim with engine speed, the regulator may no longer be controlling stator output. This older box-style unit is for systems that match its three-terminal connection and 15-amp rating.
A regulator should not be condemned before the battery, grounds, stator AC output, and wiring are tested. A shorted harness or failed stator can damage the replacement.
Key Features & Performance
- 12-volt regulator/rectifier
- 15-amp charging-system rating
- Three-pin connection
- Box-style replacement for compatible Kohler systems
Replaces Part Numbers
- 41-403-09
- 41-403-09-S
- 4140309
- 4140309-S
- 4140308-S
- 4140310-S
- 25-755-03-S
- 234279
- AM102596
Common Uses
- Battery does not charge with stator output present
- Charging voltage is too high
- Intermittent lights or electrical power
- Replacing a heat-damaged or corroded regulator
Technical Specifications
- Product Type: Voltage regulator rectifier
- System Voltage: 12 V
- Rated Output: 15 A
- Connector: 3-pin
- Replacement Type: Aftermarket
Installation & Fitment
- Test battery condition and stator AC output first
- Disconnect the battery before replacing electrical parts
- Clean the mounting surface and ground connection
- Confirm regulated DC voltage after installation
Compatibility Notice
Match engine spec number, regulator references, connector pinout, mounting holes, current rating, and charging-system design. Similar-looking Kohler regulators are not interchangeable.
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Frequently Asked Questions
Q: Can a bad regulator drain the battery? A: Yes, but the battery, stator, wiring, and parasitic loads must also be checked.
Q: What charging voltage should I see? A: Use the equipment service specification; voltage should rise under charge without excessive overvoltage.
Q: Does the mounting surface matter? A: Yes. Clean mounting and grounds help heat transfer and electrical reliability.
Q: Will this replace any three-pin regulator? A: No. Pinout, amperage, and system design must match.
Part Summary
keywords: Kohler 41-403-09 regulator, 4140309 rectifier replacement, John Deere AM102596 regulator, 15 amp three pin voltage regulator, Kohler battery not charging, aftermarket small engine rectifier
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.