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Ignition Module for John Deere 316 317 318 420 Onan P218G P220G | 166-0820 541-0522
Ignition Module for John Deere 316 317 318 420 Onan P218G P220G | 166-0820 541-0522
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Product Overview
Replacement ignition module for selected John Deere 316, 317, 318, and 420 lawn and garden tractors equipped with compatible Onan engines, including listed P218G and P220G applications.
Designed as an aftermarket replacement for compatible Onan ignition-system components, this module cross-references 166-0820, 166-0785, 541-0522, HE166-0761, and HE541-0522.
The ignition module plays an important role in controlling the ignition system so the engine can produce properly timed spark. A failing module may contribute to hard starting, no-spark conditions, intermittent ignition, engine shutdown when hot, or failure to restart.
Before ordering, match the engine model, original part number, connector/wiring configuration, mounting design, and product appearance.
Product Compatibility
| Equipment Make | Model | Engine / Application | Fitment Notes |
|---|---|---|---|
| John Deere | 316 | Selected Onan-equipped applications | Verify engine and original module |
| John Deere | 317 | Selected Onan-equipped applications | Verify original ignition system |
| John Deere | 318 | Onan application | Verify engine model and part number |
| John Deere | 420 | Onan application | Verify engine model and original module |
| Onan | P218G | Engine | Listed compatible application |
| Onan | P220G | Engine | Listed compatible application |
OEM & Replacement Part Numbers
Listed cross-reference numbers include:
- 166-0820
- 166-0785
- 541-0522
- HE166-0761
- HE541-0522
Primary Search References
Onan 166-0820
Onan 541-0522
Compare the number on the original component with the listed cross-references before ordering.
Specifications
| Specification | Details |
|---|---|
| Product Type | Ignition Module |
| Equipment Application | Lawn / Garden Tractor |
| Listed Equipment Make | John Deere |
| Listed Models | 316 / 317 / 318 / 420 |
| Engine Application | Onan |
| Listed Engines | P218G / P220G |
| Cross References | 166-0820 / 166-0785 / 541-0522 / HE166-0761 / HE541-0522 |
| Material | Metal / Electronic Components |
| Replacement Type | Aftermarket |
| Condition | New |
| Dimensions | Refer to product dimension images |
Key Features
- John Deere Applications: Listed for selected 316, 317, 318, and 420 tractor applications.
- Onan Engine Compatibility: Listed for compatible P218G and P220G engine configurations.
- Multiple Part References: Cross-references 166-0820, 166-0785, 541-0522, and related numbers.
- Ignition System Replacement: Intended to replace a compatible worn or failed ignition-control component.
- Fitment Verification: Engine model, original part number, mounting design, and wiring provide multiple ways to confirm compatibility.
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Passform-FAQ
Passt dieses Teil zu meinem spezifischen Modell und Baujahr?
This module is listed for selected John Deere 316, 317, 318, and 420 applications using compatible Onan ignition systems.
Because equipment within the same model family may have different engines or ignition components, verify your engine model and original part number before ordering.
Muss ich die OEM-Teilenummer verwenden?
Matching the original part number is strongly recommended.
Listed replacement references include:
166-0820 / 166-0785 / 541-0522 / HE166-0761 / HE541-0522
If the number on your original component is different, verify compatibility before ordering.
Für welche Modelle oder Situationen passt dieser Teil nicht?
Matching the original part number is strongly recommended.
Listed replacement references include:
166-0820 / 166-0785 / 541-0522 / HE166-0761 / HE541-0522
If the number on your original component is different, verify compatibility before ordering.
Was sollte ich vor der Bestellung überprüfen?
Confirm:
Equipment make and model
John Deere model number
Onan engine model
Engine specification where available
Original ignition-module part number
Wiring / connector configuration
Mounting design
Original module shape and dimensions
For older John Deere equipment, identifying the installed engine and ignition-system configuration is more reliable than ordering by tractor model alone.