Strebzaeroparts

Quantity: One (1)
Item: Aircraft Engine Piston (Standard Size)
Brand / Manufacturer: Superior Air Parts
Country of Manufacture: Brazil
Part Number / MPN: SL13623
Size Specification: Standard (STD)
Weight: 912g (The actual weight is stamped on the face of the piston dome and has been verified on a gram scale)
Visual Appearance: New Old Stock (NOS) condition from bulk inventory. Piston dome, ring lands, and wrist pin bores are clean and free from previous operational wear. This item is not in its original packaging. Please inspect all high-resolution listing photos closely to verify the exact cosmetic details.
Bench Test: Weight-verified and visually checked. Offered strictly "as removed" from surplus stock without further dimensional clearance profiling.

This listing is for one (1) "New Old Stock" genuine Superior Air Parts standard size piston as described above. The physical details checked are stated directly in the original description text. Because this is a surplus engine component, it is listed explicitly **for parts or not working** with no implicit guarantee of service life, immediate intended use, or specific reparability. It will require a formal aviation inspection prior to installation.

• Application Guide: Eligible for installation on Lycoming O-235-K, L, M series, N2C, P1, P2C, and P3C engine models featuring an 8.50:1 compression ratio.

• Service Letter L87-03 B Notice: According to the manufacturer's official documentation, this piston is interchangeable in complete sets with Textron Lycoming part number LW-18729. Due to critical weight variations, the SL13623 and older legacy Lycoming pistons must not be mixed within the same engine crankcase.

• TBO Specification: Service documentation confirms that part number SL13623 matches the configuration required for the established 2,400-hour recommended Time Between Overhaul (TBO) period on eligible O-235 series powerplants.

Installer Notice: Prior to purchase, please independently check your current piston part numbers, operational weights, and exact engine application requirements against your aircraft's Illustrated Parts Catalog (IPC). Final fitment compliance and weight-matching limits are the sole responsibility of the installer.

• Domestic: Shipped via rapid USPS Priority Mail with tracking. Engine pistons are insulated to prevent face or skirt scuffing during transit.
• International: Handled through the eBay International Shipping program.
• Handling Time: Ships within two business days (typically next business day). Tracking updates automatically upon shipment.

This item is sold strictly as-is and as-removed. The seller does not provide formal aviation airworthiness documentation (such as FAA Form 8130-3 tags). Final determination for airworthiness, flight safety, and airframe eligibility rests entirely with the purchasing party and their installing FAA-certified A&P mechanic or IA. Due to the nature of aviation surplus, all sales are final.

Clear photos are provided so you can inspect the crown stamps and lands visually before buying. If you have technical questions or require a specific ring-groove measurement, please send a message prior to purchase.

Thanks for looking, David.
Strebzaeroparts — Serving the aviation community since 2001.