SL10545 P010 – Superior Air Parts FAA-PMA Piston For Lycoming Engines .010 Over
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Overview
The Superior Air Parts SL10545 P010 is an FAA-PMA approved, +.010 inch oversize piston, meticulously engineered for use in various Lycoming O-360 series engines. This piston is not a cast component; it is forged from a high-strength, lightweight aluminum alloy, resulting in a dense grain structure that provides superior strength, durability, and resistance to thermal distress. Designed as a direct replacement for the original equipment part in overhauled cylinders, the SL10545 P010 restores the standard 8.5:1 compression ratio, ensuring your engine produces its full rated horsepower and operates with maximum efficiency.
Key Features
- High-Strength Forged Construction: Each piston is forged from a high-silicon aluminum alloy. The forging process aligns the material's grain structure, eliminating the porosity found in cast pistons and creating a component that is significantly stronger and more resistant to fatigue cracking under high combustion pressures.
- +.010" Oversize Specification: The "P010" designation signifies this piston is precision-machined to be 0.010 inches larger than the standard diameter. It is specifically designed for use in cylinders that have been bored oversize during an engine overhaul to correct for wear or minor scoring.
- Optimized Compression Ratio: Engineered to provide the standard 8.5:1 compression ratio for Lycoming O-360-A series engines. This ensures the engine operates within its certified design parameters, delivering expected horsepower and performance.
- Precision Machining: All critical dimensions, including the ring grooves, wrist pin bore, and crown profile, are CNC machined to exceptionally tight tolerances for a perfect fit, optimal ring seal, and quiet operation.
- FAA-PMA Certified: As a certified FAA-PMA part from Superior Air Parts, it has been rigorously tested to meet or exceed the performance and quality standards of the original OEM component, making it a fully airworthy and cost-effective solution for engine overhauls.
Technical Specifications
- Part Number: SL10545 P010
- Manufacturer: Superior Air Parts
- Component Type: Engine Piston, +.010" Oversize
- Material: Forged High-Strength Aluminum Alloy
- OEM Replacement for: Lycoming P/N LW12949, 75090 (+.010" variants)
- Engine Series Application: Lycoming 360 Series (Parallel Valve)
- Nominal Compression Ratio: 8.5:1
- Certification: FAA-PMA
Engine Compatibility
The Superior Air Parts SL10545 P010 piston is the specified +.010" oversize replacement for a wide range of the venerable Lycoming O-360 series engines. It is imperative to consult the specific engine overhaul manual and parts catalog for final verification.
- Primary Engine Models (Examples):
- O-360: A1A, A1AD, A1C, A1D, A1F6, A1G, A1G6, A1H, A1H6, A1LD, A2D, A2E, A2F, A2G, A2H, A3A, A3AD, A3D, A4A, A4AD, A4D, A4G, A4J, A4K, A4M, A4N, A4P, A5AD
- And many other variants in the O-360 family.
Applications
The SL10545 P010 is a critical component for engine overhaul and repair:
- Engine Overhaul: The primary application is for installation in cylinders that have been inspected and re-bored to +.010" oversize to restore a perfectly round, straight cylinder wall.
- Performance Restoration: Restores compression and horsepower in an overhauled engine by ensuring a perfect seal between the new piston, new piston rings, and the freshly honed cylinder wall.
Why Choose SL10545 P010?
The piston is the heart of a reciprocating engine, bearing the full force of every combustion event. The forged construction of the Superior Air Parts SL10545 P010 provides a significant strength and durability advantage over cast pistons, offering greater resistance to damage from detonation or pre-ignition. By choosing a high-quality, FAA-PMA approved piston from a trusted manufacturer like Superior, you are investing in the long-term health, reliability, and performance of your overhauled engine.
Order Your Superior Air Parts SL10545 P010 Pistons Now
Build your Lycoming engine to the highest standards of strength and reliability with forged pistons from Superior Air Parts. Visit Airparts.aero to order your +.010" oversize SL10545 P010 pistons today.
The SL10545 P010 piston is a product of advanced metallurgy and manufacturing. Forging involves taking a solid billet of aluminum alloy and subjecting it to immense pressure, forcing the metal to flow into the shape of the piston die. This process creates a dense, non-porous internal structure with an aligned grain flow that follows the contours of the piston crown and skirt. This is fundamentally different from a cast piston, where molten aluminum is simply poured into a mold. The resulting forged piston has a higher strength-to-weight ratio and superior thermal conductivity, allowing it to run cooler and withstand higher cylinder pressures more effectively than a cast equivalent. This makes it an ideal choice for ensuring the durability of a freshly overhauled engine.
Note: This is a critical engine internal component. Installation must be performed by a certified A&P mechanic or at a qualified engine overhaul facility in strict accordance with the current Lycoming Overhaul Manual. Always use a new piston pin and rings with a new piston. The cylinder must be machined to the precise oversize dimension and surface finish to match this piston.
