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
AI disclosure: this product description and its specifications were generated with AI assistance from the manufacturer's Illustrated Parts Catalog.
- Stock: Warehouse
- Manufacturer Part #: LW-16783-18
- Part#: LW-16783-18
Aircraft Fitment Finder
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 only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
- Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
- 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
We source products from manufacturers, authorized distributors, and established aviation suppliers as applicable. We are an independent reseller; we do not claim direct dealer or authorized-representative status for any brand. Documentation, source, and warranty eligibility vary by product and are confirmed 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.
