The Lycoming Magneto Drive Coupling Kit (P/N 904269K1) is an essential component responsible for transmitting rotational energy from the engine's accessory gear train to the magneto, ensuring precise ignition timing for reliable engine operation.
This critical drive coupling kit is specifically engineered for the Lycoming O-320, IO-320, and LIO-320 series engines, providing the mechanical link that drives the magneto at the correct speed relative to crankshaft rotation. Its design allows for the necessary rotational flexibility while maintaining the precise alignment required for consistent spark generation.
- Lycoming O-320 Engines:
- O-320-A1A through O-320-E3D (and all sub-variants utilizing this coupling)
- Lycoming IO-320 Engines:
- IO-320-A1A through IO-320-F1A (and all sub-variants utilizing this coupling)
- Lycoming LIO-320 Engines:
- LIO-320-C1A (and other LIO-320 variants where applicable)
Replacement of the magneto drive coupling, P/N 904269K1, is typically performed during engine overhaul, when a magneto requires replacement, or if inspection reveals signs of wear or damage to the existing coupling. Proper installation is vital for maintaining engine performance and preventing premature wear on both the magneto and the engine accessory drive gears.
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: 904269K1
- Part#: 904269K1
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Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
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