LYCOMING LW-18639 Lock Plate

( Brand: Lycoming ), ( Manufacturer Part Number: LW-18639 ), ( Part Type: Lock Plate )

Review LYCOMING Lock Plate Lots Of New Surplus

The Lycoming LW-18639 Lock Plate is a critical component in the engine installation of various Lycoming aviation engines. This lock plate is specifically designed to provide a secure connection between the cylinder head and the crankcase, ensuring the engine's structural integrity and efficient operation.

Made from high-strength materials, this lock plate boasts excellent durability and resistance to the harsh conditions that aircraft engines encounter. It features multiple bolt holes that allow for a precise and secure fitment with the corresponding engine components. The holes are threaded with standard engine bolt patterns to ensure compatibility with a wide range of Lycoming engines.

The surface finish of the Lycoming LW-18639 Lock Plate is engineered to provide optimal sealing performance. The plate's smooth, polished surface mates seamlessly with the cylinder head gasket, creating a tight seal that prevents the escape of combustion gases. Moreover, the lock plate's finish resists corrosion, ensuring the engine's longevity.

The Lycoming LW-18639 Lock Plate undergoes rigorous testing to meet the highest standards of quality and performance. Each plate is inspected individually to ensure it meets the specified dimensional tolerances and material properties. The result is a lock plate that provides unparalleled reliability and performance in the demanding environment of an aircraft engine.

In summary, the Lycoming LW-18639 Lock Plate is an essential component for any Lycoming aviation engine installation. Its robust design, high-strength materials, and precision manufacturing make it a trusted choice for ensuring engine structural integrity and efficient operation.

Pros and Cons of Buying a Lycoming LW-18639 Lock Plate for an Aviation Engine

The Lycoming LW-18639 lock plate is a crucial component used in the installation and securing of accessory drive belts in Lycoming IGO-183 and IGO-360 series aviation engines. This part ensures the proper functioning of various engine accessories such as the alternator, vacuum pump, and fuel pump. In this analysis, we will discuss the potential advantages and disadvantages of buying a Lycoming LW-18639 lock plate for an aviation engine.

1. High-Quality Construction: The Lycoming LW-18639 lock plate is manufactured using durable materials, ensuring long-lasting performance and reliability. This component is designed to withstand the rigors of aviation engine operation.

2. Proper Functioning of Accessory Drive Belts: By securing the accessory drive belts in place, the lock plate ensures that they do not slip or come off during engine operation. This results in optimal functionality and efficiency of various engine accessories.

3. OEM (Original Equipment Manufacturer) Part: Purchasing a Lycoming LW-18639 lock plate ensures that you are getting an authentic, genuine OEM part. This can provide peace of mind, knowing that you are using a part specifically designed for your engine by the manufacturer.

4. Improved Engine Safety: A worn-out or faulty lock plate can potentially cause accessory drive belts to come loose, leading to catastrophic engine failure. By investing in a new lock plate, you are enhancing the overall safety of your engine.

1. Cost: The Lycoming LW-18639 lock plate may be more expensive compared to aftermarket alternatives. This higher cost could be a significant drawback for some engine owners, especially those operating on a budget.

2. Availability: Depending on the specific model of the Lycoming engine and the availability of stock, it may take some time to receive the lock plate. This could potentially cause downtime for the aircraft, leading to operational inconvenience.

The Lycoming LW-18639 lock plate offers several advantages, including high-quality construction, improved engine safety, and optimal functionality of engine accessories. However, it may come with a higher cost compared to aftermarket alternatives and potential availability issues. Ultimately, the decision to invest in a Lycoming LW-18639 lock plate depends on the specific needs, budget, and priorities of the aviation engine owner.

If the engine owner values the benefits of a genuine OEM part, such as long-lasting performance, optimal functionality, and improved engine safety, investing in a Lycoming LW-18639 lock plate is recommended. However, if cost is a major concern, exploring aftermarket alternatives or considering a used OEM part may be worthwhile. Engine owners should also plan ahead and factor in potential lead times for part availability.

Details:

The LW-18639 Lock Plate is a set of 6 new surplus replacement parts for Lycoming engines.

part #: lw18639 prices

• $7.50-$18.00

specifications aviationpar:

• brand: Lycoming
• mpn: Lw-18639
• part type: Lock Plate

shipping aviationpar:

• carrier: USPS
• service: USPS Ground Advantage
• type: Calculated
• class: Standard
• transit: 5-9 Days
• cost: $8.10

returns aviationpar:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

offer aviationpar:

• started: March 14, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0

payments aviationpar:

• other
• wallet: Apple-pay
• credit card: Discover

general aviationpar:

• condition: New
• Parts Accessories > Aviation Parts Accessories > Parts

seller aviationpar:

• city: Riverside, California
• rating: 100.0%
• # reviews: 247

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