UANOFCN lower unit drain plug kit showing secure seals for MerCruiser gear cases
UANOFCN magnetic screw designed for reliable drain plug retention
UANOFCN non-magnetic screw for versatile compatibility across models
UANOFCN gaskets sealing drain and fill holes for leak-free operation
UANOFCN kit fits MerCruiser and Mariner outboards for easy upgrades
UANOFCN lower unit drain plug set supports reliable maintenance on watercraft
UANOFCN lower unit drain plug kit showing secure seals for MerCruiser gear cases
UANOFCN magnetic screw designed for reliable drain plug retention
UANOFCN non-magnetic screw for versatile compatibility across models
UANOFCN gaskets sealing drain and fill holes for leak-free operation
UANOFCN kit fits MerCruiser and Mariner outboards for easy upgrades
UANOFCN lower unit drain plug set supports reliable maintenance on watercraft

UANOFCN 2-Set Lower Unit Drain Plug Kit for Mercury MerCruiser Outboards – Magnetic & Non-Magnetic 3/8-16 Screws

OverviewUpgrade your lower unit maintenance with the UANOFCN 2-Set Lower Unit Drain Plug Kit. This kit combines...
Vendor: UANOFCN
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UANOFCN lower unit drain plug kit showing secure seals for MerCruiser gear cases

UANOFCN 2-Set Lower Unit Drain Plug Kit for Mercury MerCruiser Outboards – Magnetic & Non-Magnetic 3/8-16 Screws

£27.88
UANOFCN lower unit drain plug kit showing secure seals for MerCruiser gear cases
UANOFCN magnetic screw designed for reliable drain plug retention
UANOFCN non-magnetic screw for versatile compatibility across models
UANOFCN gaskets sealing drain and fill holes for leak-free operation
UANOFCN kit fits MerCruiser and Mariner outboards for easy upgrades
UANOFCN lower unit drain plug set supports reliable maintenance on watercraft

UANOFCN 2-Set Lower Unit Drain Plug Kit for Mercury MerCruiser Outboards – Magnetic & Non-Magnetic 3/8-16 Screws

£27.88
Description
Description
x

Overview

Upgrade your lower unit maintenance with the UANOFCN 2-Set Lower Unit Drain Plug Kit. This kit combines a magnetic screw, a non-magnetic screw, and two gaskets to help you seal the drain and fill holes on your marine gear case. The hardware is designed for 3/8-16 drain or fill hole screws, making it a versatile option for a range of MerCruiser stern drives, MerCruiser outboards, and Mariner outboards (excluding Verado).

Real-world clarity and practical benefits help you assess if this kit fits your maintenance routine and engine model. The kit emphasizes a reliable seal, flexible compatibility, and straightforward replacement, without promising outcomes beyond what the hardware can offer in typical marine service conditions.

What is in the kit

  • 1 magnetic drain screw for secure retention when used in magnetic assemblies
  • 1 non-magnetic drain screw for versatile metal compatibility
  • 2 gaskets to seal drain and fill openings during service
  • Option to replace several OEM parts with a single kit for easier part matching

Why this matters

  • Helps support a leak-resistant lower unit by providing a dedicated seal combination
  • Includes both magnetic and non-magnetic screws to cover different installation needs
  • 3/8-16 thread size supports a broad range of MerCruiser gear cases and Mariner outboards
  • Two gaskets help maintain a tight seal across drain and fill openings during maintenance

Compatibility and installation

Designed for 3/8-16 drain or fill hole screws, this kit is compatible with MerCruiser stern drives, MerCruiser outboards, and Mariner outboards (excluding the Verado series). It replaces multiple OEM part numbers to offer a practical fit for several engine configurations, simplifying part matching during service.

Installation notes: ensure the drain hole threads are clean and dry, align the gasket seating, and snug the screws to recommended torque. After service, perform a brief system check to confirm there are no leaks and that the gear case remains sealed under typical operating conditions.

Maintenance perspective

The lower unit drain plug kit is designed as a maintenance accessory rather than a guarantee of performance. In controlled environments, users may experience a more consistent seal and easier service steps when pulling and re-sealing the lower unit during routine maintenance.

FAQ

Q: What does this kit include?

A: The kit includes one magnetic screw, one non-magnetic screw, and two gaskets for a secure, leak-resistant seal on 3/8-16 drain holes.

Q: Is this kit compatible with my engine?

A: It is designed for MerCruiser stern drives, MerCruiser outboards, and Mariner outboards (excluding Verado) and replaces several OEM parts for a flexible fit.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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