Overview
The Lycoming Retaining Ring (P/N sfb-2231) is a small, precision-engineered component vital for securing other parts within various Lycoming aircraft engine assemblies. Functioning as a critical fastener, this retaining ring prevents axial movement of components on a shaft or within a bore by fitting into a machined groove. Its role is essential in maintaining the correct positioning and operational integrity of associated engine sub-assemblies, contributing directly to the reliability and safe operation of the entire powerplant system.Specifications
The sfb-2231 retaining ring is manufactured to precise dimensions, ensuring a secure fit and reliable retention. Its compact size and robust construction are key to its performance in high-stress engine environments.- Part Number: sfb-2231
- Weight: 0.01 lb (approximately 4.5 grams)
- Dimensions:
- Length: 0.44 inches (11.18 mm)
- Width: 0.44 inches (11.18 mm)
- Height: 0.07 inches (1.78 mm)
- Material: Typically 302 Stainless Steel, as per the cross-referenced military standard for this type of retaining ring, offering excellent corrosion resistance and strength.
- Finish: Natural metallic, unplated.
- Type: External retaining ring, designed to fit into a groove on a shaft.
Aircraft Compatibility
The Lycoming Retaining Ring, part number sfb-2231, is a widely applicable component across a broad range of Lycoming aircraft engines. Its design allows forAI disclosure: this product description and its specifications were generated with AI assistance from the manufacturer's Illustrated Parts Catalog.
- Stock: Out of Stock
- Manufacturer Part #: sfb-2231
- Part#: sfb-2231
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.
