Marine Gear Oil Drain Screw Set – Stainless Steel 90340-08002

Marine Gear Oil Drain Screw Set – Stainless Steel with Magnetic Tip & Sealing Washers

Keep your outboard motor's lower unit in top shape with this Marine Gear Oil Drain Screw Set. Designed to fit gear oil service points using the 90340-08002 thread reference, this kit delivers everything you need for a clean, leak-free gear oil change — all in one convenient package. Made in Mainland China.

Key Features

• 90340-08002 Thread Compatibility: Purpose-built for gear oil drain service points that use this thread specification, making part selection straightforward for lower unit maintenance on compatible 2-cycle and 4-cycle marine motors.
• Magnetic Debris-Collecting Tip: Each screw features a built-in magnet at the tip that captures metal particles during gear oil changes — giving you a cleaner service process and a convenient way to inspect fluid condition and monitor lower unit health.
• Two Oil-Resistant Sealing Washers Included: The set comes with two red rubber sealing washers that work alongside the screws to form a tight, secure seal after installation, minimizing seepage whether the motor is stored on a tilt or operating in rough water conditions.
• Durable Stainless Steel Construction: The screw bodies are crafted from stainless steel for lasting performance through repeated marine maintenance sessions — resisting corrosion in both freshwater and saltwater environments.
• Complete Ready-to-Use Kit: Each set includes two slotted drain screws and two sealing washers, so you're fully equipped for scheduled gear oil changes without hunting down separate components.

Specifications

Package Includes

• 1 Set: 2 × Stainless Steel Drain Screws (with magnetic tip)
• 2 × Red Oil-Resistant Sealing Washers

Note: Please allow 1–2 cm tolerance due to manual measurement. Colors may vary slightly between monitors and actual product.

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Frequently Asked Questions

Q: What marine motors are compatible with this gear oil drain screw set?

A: This drain screw set is designed for outboard marine motors that use the 90340-08002 thread reference at their gear oil drain service points. This typically includes a range of compatible 2-cycle and 4-cycle outboard motors. We recommend verifying your motor's part number against 90340-08002 before ordering to ensure a proper fit.

Q: Why does the drain screw have a magnetic tip?

A: The magnetic tip on each stainless steel drain screw is designed to attract and collect fine metal particles that circulate in the gear oil during normal motor operation. When you remove the screw during an oil change, these captured particles come out with it, helping you keep the lower unit cleaner and giving you a useful visual indicator of internal wear over time.

Q: Do I need to purchase sealing washers separately?

A: No — this set comes complete with two red oil-resistant rubber sealing washers, one for each drain screw. These washers are essential for forming a proper seal after installation and are included so you have everything needed for a complete gear oil service without additional purchases.

Q: Is stainless steel important for marine drain screws?

A: Yes. Stainless steel is highly recommended for marine hardware because it offers strong resistance to corrosion in both freshwater and saltwater environments. Using stainless steel drain screws helps ensure the hardware remains easy to remove and reinstall during future maintenance, reducing the risk of seized or corroded fasteners.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.