For operators and maintenance facilities servicing the robust Lycoming O-320-D3G engine, ensuring the integrity of critical internal components is paramount. The Lycoming Piston Pin Plug (P/N LW-16783-18) is an essential, precision-engineered component within the reciprocating assembly, designed to maintain the axial position of the piston pin within the piston bore. This small but vital part prevents the piston pin from migrating outwards and contacting the cylinder wall, which could lead to catastrophic engine damage. Its proper fit and condition are indispensable for the smooth and reliable operation of the engine, particularly under varying load conditions and temperatures.
Specifications
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: LW-16783-18
- Part#: LW-16783-18
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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.
Shipping
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
