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SKU:
NLT1C00944
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20A Voltage Regulator Rectifier for John Deere 318 420 Onan P-Series
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
This aftermarket 20-amp voltage regulator rectifier replaces Onan 191-1748, 191-2106, 191-2208, and 191-2227 on compatible John Deere and Onan P-series applications.
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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
- John Deere 318 with compatible Onan engine
- John Deere 420 with compatible Onan engine
- Onan P216G
- Onan P218G
- Onan P220G
- Compatible Wheel Horse equipment using the listed regulator
Product Overview
A battery that goes dead while mowing, headlights that brighten with engine speed, or charging voltage that climbs too high can point to the regulator after the battery, stator, grounds, and wiring have been tested. A burned connector can damage a replacement if it is not repaired.
This rectifier-regulator converts stator output and controls charging voltage on compatible Onan P216G, P218G, and P220G engines, including common John Deere 318 and 420 installations. Compare the plug, mounting, amp rating, engine, and original number.
Key Features & Performance
- Combined rectifier and voltage regulator
- 20-amp charging-system rating
- Compatible with select Onan P-series engines
- Cross-references John Deere HE191-1748 and common aftermarket numbers
Replaces Part Numbers
- 191-1748
- 191-2106
- 191-2208
- 191-2227
- HE191-1748
- AKH6003
- 435-175
- TRR2277
Common Uses
- Repairing an undercharging lawn tractor
- Replacing a regulator that overcharges the battery
- Correcting a heat-damaged charging connector after testing
Technical Specifications
- Product Type: Voltage regulator rectifier
- Rated Output: 20A compatible system
- Engine Family: Onan P-series
- Condition: New aftermarket replacement
Installation & Fitment
- Load-test the battery and test stator AC output first
- Clean engine and frame grounds before connecting the regulator
- Replace melted terminals or loose connector pins
- Confirm regulator part number, plug arrangement, and charging-system amp rating
Compatibility Notice
Northline Parts does its best to list all known compatible models. The correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: What voltage should I check before replacing the regulator? A: Follow the equipment service manual for battery, stator AC, and regulated DC tests.
Q: Can a bad battery damage the charging system? A: A shorted or failing battery can overload components, so test it first.
Q: Does this fit every John Deere 318? A: No. Verify the installed engine and original regulator number.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: John Deere 318 voltage regulator, Onan 191-1748 rectifier, P218G charging regulator, John Deere 420 battery not charging, 20 amp Onan regulator replacement
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.