Gasket – Fits Mercury/Mercruiser 75-115 HP EFI 4-Stroke Outboards (Replaces 27-8M0024563)

$48.27

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Product Details

This OEM-quality Gasket – Fits Mercury/Mercruiser 75-115 HP EFI 4-Stroke Outboards (Replaces 27-8M0024563) is engineered for a precise fit on Mercury and Mercruiser 75-115 HP EFI 4-Stroke outboard engines produced from 2004–2013 (serial number ranges 1B366823–2B094995).

It serves as a direct replacement for Mercury part numbers 8M0024563 and 27-8M0024563.

Installation: Engine-specific placement
Fuel Type: Designed for gasoline engines
Design: Conforms to factory original equipment standards

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Mercury	8M0024563
Mercury	27-8M0024563

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Mercury/Mercruiser engines, check your model and serial number range to ensure a perfect match.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Mercury	75 EFI	75	4-Stroke	2004–2013	27-8M0024563	Serial: 1B366823 through 2B094995
Mercury	80 EFI	80	4-Stroke	2004–2013	27-8M0024563	Serial: 0P459572 through 2B094995, 1B366823 through 2B094995
Mercury	90 EFI	90	4-Stroke	2004–2013	27-8M0024563	Serial: 1B366823 through 2B094995
Mercury	100 EFI	100	4-Stroke	2004–2013	27-8M0024563	Serial: 0P459572 through 2B094995, 1B366823 through 2B094995
Mercury	115 EFI	115	4-Stroke	2004–2013	27-8M0024563	Serial: 1B366823 through 2B094995

Technical Specs

Product Type: OEM Gasket
Installation: Engine-specific placement
Fuel Type: Gasoline
Dimensions: Length: 29.0 in (736.6 mm), Width: 21.0 in (533.4 mm), Height/Thickness: 1.0 in (25.4 mm)
Weight: 0.42 lb (0.19 kg)
Warranty: Mercury Marine standard parts warranty
Other Technical Attributes: Mercury Marine/Mercruiser factory original equipment

What’s in the Box

1 x Gasket (27-8M0024563/8M0024563)

Installation Notes

Ensure the engine is off and cool, and disconnect the battery as a safety precaution.
Access the component where the old gasket is located; this may require removing other parts.
Carefully remove the old gasket. Thoroughly clean both mating surfaces to remove any old sealant or debris.
Place the new gasket into position, ensuring it aligns correctly with all bolt holes and passages.
Reinstall the component over the new gasket, tightening bolts or fasteners to the manufacturer’s recommended torque specifications.
Reconnect the battery, start the engine, and inspect carefully for any signs of leaks.

Troubleshooting & FAQ

How do I know if this gasket will fit my specific engine?

Your best confirmation method is to match your engine's model, year, and especially its serial number against the ranges listed in our Engine & Model Compatibility table. If your serial number falls within the specified range for your model, the part will fit.

What are the common signs of a failed gasket?

Symptoms of a bad gasket can include visible fluid leaks (oil or coolant) around the engine, engine overheating, loss of power, or white smoke from the exhaust. Any of these signs warrant an inspection.

Where exactly on the engine does this gasket install?

While this gasket fits the specified EFI 4-stroke models, the provided data does not indicate its exact placement on the engine block. We strongly recommend consulting your official Mercury/Mercruiser service manual for diagrams and location details.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement, not an OEM component.
Professional installation is recommended for safety and performance.

About Sea Sierra

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