Overview
The Lycoming Oil Pump Drive Gear (P/N 383-B) is a fundamental component within the engine's intricate lubrication system. This gear is responsible for transmitting rotational power from the engine's crankshaft or an accessory drive shaft directly to the oil pump, ensuring continuous circulation of lubricating oil throughout the engine. Its proper function is absolutely critical for maintaining adequate oil pressure, cooling, and the overall longevity of the engine's internal moving parts. Without the reliable operation of the 383-B, the engine's vital lubrication circuit would fail, leading to severe damage.Specifications
Detailed physical specifications for the Lycoming Oil Pump Drive Gear, part number 383-B, are primarily found within the comprehensive Lycoming engine overhaul manuals, as this component is integral to the engine assembly. Specific weight, precise dimensions, and material composition are typically not cataloged as standalone part specifications but are engineered to meet the exact requirements of the Lycoming O-320 and AEIO-320 series engines. Users should consult the relevant Lycoming overhaul and parts catalogs for engine-specific data regarding the 383-B.Aircraft Compatibility
This Lycoming Oil Pump Drive Gear, P/N 383-B, is designed for a range of Lycoming direct-drive, air-cooled, horizontally opposed piston aircraft engines. Its application extends to several variants of the O-320 and AEIO-320 series, encompassing both carbureted and fuel-injected configurations.Applicable Engine Models include:
- Lycoming O-320-D3G (as specified in Parts Catalog PC-203-D3G)
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: 383-B
- Part#: 383-B
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 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.
