Sierra Ignition Coil 18-5159, Replaces 339-883778A01, for Mercury Outboard Motors

The Sierra 18-5159 Ignition Coil is a direct-fit replacement ignition coil built for a range of Mercury outboard motors. It supplies the coil-side ignition function that fires the spark plugs, and is designed as a bolt-on replacement so no modification is needed for installation. The coil uses a male connector for a straightforward plug-in fit to the existing engine harness.

This coil is designed to fit Mercury outboard models including the 1650, 1550, 1100, 1350, 110 Jet (2.5L), 150 Pro XS (2.5L), 200 (DFI) 3.0L, 200 (3.0L-DFI)(DTS), 200 Pro XS (DFI) 3.0L, 225 (DFI) 3.0L, 225 (3.0L-DFI)(DTS), 250 (DFI) 3.0L, V-135 (DFI) 2.5L, V-150 (DFI) 2.5L, V-175 (DFI) 2.5L, and 2.5XS (2.5L DFI), each tied to a specific starting serial number as noted in the fitment list below. It is sold as a single ignition coil (1 count) and weighs 0.75 pounds.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5159
• Category: Mercury Outboard Ignition Coils
• Connector Gender: Male
• Installation Type: Bolt-On
• Automotive Fit Type: Vehicle Specific Fit
• Unit Count: 1.0 Count
• Included Components: Ignition Coil
• Package Dimensions: 4.25 x 3.5 x 3.5 inches
• Weight: 0.75 pounds
• UPC: 808282373849
• OEM Cross Reference: 339-8M0077473, 339-883778A02, 339-883778A01

Fitment

• Mercury 1650 (0M965309-Up)
• Mercury 1550 (0M973231-Up)
• Mercury 1100 (0M965965-Up)
• Mercury 1350 (0M965309-Up)
• Mercury 110 Jet (2.5L) (1B690542-Up)
• Mercury 150 Pro XS (2.5L) (1B690542-Up)
• Mercury 200 (DFI) 3.0L (1B504989-Up)
• Mercury 200 (3.0L-DFI)(DTS) (1B504989-Up)
• Mercury 200 Pro XS (DFI) 3.0L (1B504989-Up)
• Mercury 225 (DFI) 3.0L (1B504989-Up)
• Mercury 225 (3.0L-DFI)(DTS) (1B504989-Up)
• Mercury 250 (DFI) 3.0L (1B528615-Up)
• Mercury V-135 (DFI) 2.5L (1B417702-Up)
• Mercury V-150 (DFI) 2.5L (1B417702-Up)
• Mercury V-175 (DFI) 2.5L (1B417702-Up)
• Mercury 2.5XS (2.5L DFI) (0T997974-1E000796)

Replaces (OEM)

• 339-8M0077473
• 339-883778A02
• 339-883778A01

Frequently Asked Questions

What is the Sierra 18-5159 ignition coil used for? The Sierra 18-5159 is an ignition coil that fires the spark plugs on compatible Mercury outboard motors, and it is designed as a bolt-on replacement for the original coil.

Which Mercury outboard models does the 18-5159 fit? It is designed to fit Mercury 1650, 1550, 1100, 1350, 110 Jet (2.5L), 150 Pro XS (2.5L), 200 (DFI) 3.0L, 200 (3.0L-DFI)(DTS), 200 Pro XS (DFI) 3.0L, 225 (DFI) 3.0L, 225 (3.0L-DFI)(DTS), 250 (DFI) 3.0L, V-135 (DFI) 2.5L, V-150 (DFI) 2.5L, V-175 (DFI) 2.5L, and 2.5XS (2.5L DFI) outboards, each starting at a specific engine serial number.

How do I know if this coil fits my engine's serial number? Each Mercury model listed for the 18-5159 ignition coil applies from a specific starting serial number, for example the 1650 applies from serial number 0M965309 and up, and the 2.5XS applies within the range 0T997974 to 1E000796; check your engine's serial number against the listed range for your model.

What OEM part numbers does the Sierra 18-5159 replace? The Sierra 18-5159 ignition coil replaces Mercury OEM numbers 339-8M0077473, 339-883778A02, and 339-883778A01.

Is the Sierra 18-5159 a genuine Mercury part or an aftermarket replacement? The 18-5159 is a Sierra-brand aftermarket ignition coil manufactured to replace the Mercury OEM coils 339-8M0077473, 339-883778A02, and 339-883778A01, not a Mercury-branded part.

How much does the ignition coil weigh? The Sierra 18-5159 ignition coil weighs 0.75 pounds.

What are the package dimensions of the 18-5159 coil? It ships in a package measuring 4.25 inches by 3.5 inches by 3.5 inches.

What type of electrical connector does this coil use? The Sierra 18-5159 ignition coil has a male connector for connecting to the outboard's wiring harness.

Is installation a direct bolt-on swap? Yes, the 18-5159 is a bolt-on installation type, designed to mount in place of the original ignition coil without modification.

How many coils come in the package? The Sierra 18-5159 is sold as a single ignition coil, one unit per package.

Does the 18-5159 fit both DFI and standard Mercury outboards? Yes, the fitment list for the Sierra 18-5159 includes both standard Mercury outboards, such as the 1650 and 1100, and DFI models, such as the 200 (DFI) 3.0L and 225 (DFI) 3.0L.