Mercury MerCruiser Distributor Cap Gasket – 27-805760

The Mercury MerCruiser Quicksilver 27-805760 is a genuine Mercury Marine OEM distributor cap gasket used on select MerCruiser gasoline engines with distributor-style ignition assemblies. This gasket installs at the distributor cap sealing surface where the factory parts diagram calls for 805760 / 27-805760, helping reduce moisture, dust, and engine-compartment contamination around the distributor cap and rotor area.

Key Features

• Genuine Mercury Marine factory OEM gasket.
• Mercury/MerCruiser part number: 27-805760.
• Manufacturer part number: 805760.
• Official part label: GASKET.
• GTIN/UPC: 745061280533.
• Listed shipping weight: 0.02 lb.
• Listed shipping dimensions: 4.25 in. L x 4.25 in. W x 0.25 in. H.
• Used in select MerCruiser distributor ignition assemblies where specified by the factory parts diagram.

Engine Compatibility

Common where-used application groups include select MerCruiser gasoline engines by serial number and distributor configuration, including:

• 4.3L GM 262 V6 applications where specified
• 5.0L GM 305 V8 applications where specified
• 5.7L GM 350 V8 applications where specified
• 350 MAG / 350 MAG MPI / Ski / Horizon applications where specified
• 7.4L / 454 GM big-block V8 applications where specified
• 8.2L / 502 GM big-block V8 applications where specified
• Select 420, 425, 450, 465, 500, 525, 600, 800, and 900 SC high-performance MerCruiser application groups where specified

Use this gasket only where the Mercury/MerCruiser ignition or distributor parts diagram specifically calls for 27-805760 / 805760.

Serial Number Fitment Notice

Confirm fitment by engine serial number, distributor style, ignition system, and exact Mercury/MerCruiser parts diagram before ordering. MerCruiser engines with similar displacement can use different distributor caps, rotors, gaskets, sensors, and ignition components depending on model year, ignition package, and serial range.

When This Part Needs Replacement

Replace this gasket whenever the distributor cap is removed during ignition service if the original gasket is compressed, torn, hardened, missing, oil-soaked, or no longer sealing cleanly. It should also be inspected if the engine has moisture-related misfire, hard starting, rough running, high-RPM sputter, corrosion inside the distributor cap, or visible contamination around the cap sealing surface.

Installation Notes

Clean the distributor cap and distributor housing sealing surfaces before installation. Inspect the distributor cap, rotor, cap screws, plug wires, coil wire, terminals, and internal contacts while the cap is removed. Make sure the gasket sits flat and is not pinched during assembly. Follow the MerCruiser service manual for the correct cap installation and ignition-system service procedure for the specific engine.

Alternate/Superseded Part Numbers

• 27-805760 Mercury/MerCruiser formatted part number
• 805760 Manufacturer part number

Parts Desk Insight

Distributor-cap sealing is important on marine gasoline engines because the distributor area is exposed to humidity, bilge moisture, and temperature changes. A damaged or missing gasket can allow moisture into the cap area, which may lead to corrosion, arcing, misfire, or hard-start complaints that are difficult to tune out with fuel or carburetor adjustments.

Shipping: Ships same or next day for fast Canada wide shipping.