Overview
The **Lycoming Cylinder Assembly (P/N 1949334)** is a fundamental component of the Lycoming IO-720 series aircraft engines, forming the combustion chamber where fuel and air are ignited to produce power. As a critical part of the reciprocating engine's power section, this assembly directly houses the piston, intake and exhaust valves, and spark plugs, facilitating the four-stroke cycle. Its integrity is paramount for engine performance, efficiency, and safety.Specifications
- Type: Air-cooled, horizontally opposed engine cylinder assembly.
- Material: Forged steel barrel, typically nitrided for wear resistance, mated to a cast aluminum alloy cylinder head.
- Bore Diameter: Specific to Lycoming IO-720 engine series (standard bore for the 720 cubic inch displacement).
- Stroke: Designed to accommodate the IO-720 piston stroke.
- Valve Configuration: Includes two intake and two exhaust valves, guides, and seats within the cylinder head.
- Spark Plug Bosses: Two threaded bosses for spark plug installation per cylinder, typically 18mm.
- Mounting: Features a robust flange for secure attachment to the engine crank
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: 1949334
- Part#: 1949334
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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.
