Sierra 18-4249 E-Tec Drain Screw with Magnet, Allen Head, Replaces 318544

The Sierra 18-4249 is an E-Tec drain screw with a built-in magnet, designed as a direct replacement for OEM part 318544. It uses an Allen (hex socket) head for a secure, tool-driven fit when removing or reinstalling, rather than a slotted or Phillips head that can strip under torque. The integrated magnetic tip is the key feature of this drain screw: as fluid drains from the engine housing, the magnet collects metal shavings and ferrous debris, giving a quick visual indicator of internal wear each time the screw is removed. This makes it a useful upgrade over a plain, non-magnetic drain screw for routine maintenance and inspection. The screw is compact, measuring 0.39 x 0.39 x 0.39 inches, and is built for use as a drain plug on applicable outboard and stern drive engine housings that accept the OEM 318544 screw. As a Sierra part, it is manufactured to fit and function as a like-for-like replacement for the original equipment screw it replaces, and is backed by Sierra's customer satisfaction warranty. This is a small, low-cost maintenance item worth keeping on hand for scheduled drain and fill service.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-4249
• Product Type: Drain screw with magnet
• Head Style: Allen head
• Feature: Magnetic tip for collecting metal shavings during draining
• Replaces (OEM): 318544
• UPC: 808282200404
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.01 pounds

Fitment

Fits applications that use the OEM 318544 drain screw.

Replaces (OEM)

• 318544

Frequently Asked Questions

What is the Sierra 18-4249? It is an E-Tec drain screw fitted with a built-in magnet, made by Sierra as a direct replacement for OEM part 318544.

What does the magnet on the 18-4249 drain screw do? The magnetic tip on the 18-4249 collects metal shavings and ferrous debris as fluid drains, giving a quick visual check on internal wear each time the screw is removed.

What tool do I need to remove or install the 18-4249? The 18-4249 has an Allen head, so it requires a hex key (Allen wrench) rather than a flat-blade or Phillips screwdriver.

What OEM part number does the Sierra 18-4249 replace? The 18-4249 is a direct replacement for OEM part number 318544.

How much does the Sierra 18-4249 drain screw weigh? The 18-4249 weighs 0.01 pounds.

What are the dimensions of the 18-4249 drain screw? It measures 0.39 x 0.39 x 0.39 inches.

Is the Sierra 18-4249 a genuine Sierra part with a warranty? Yes, the 18-4249 is manufactured by Sierra and is covered under Sierra's customer satisfaction warranty.

What is included when I order part 18-4249? Ordering the 18-4249 gets you one E-Tec drain screw with the integrated magnet and Allen head.

How is the 18-4249 different from a standard, non-magnetic drain screw? Unlike a plain OEM 318544 drain screw, the 18-4249 adds a magnetic tip that traps metal shavings during draining, making it easier to spot internal wear during maintenance.

Is the Sierra 18-4249 currently in production? Yes, the 18-4249 E-Tec drain screw is not discontinued by the manufacturer.

What is the UPC for the Sierra 18-4249? The UPC for the Sierra 18-4249 drain screw is 808282200404.