Mercury MerCruiser Distributor Cap Gasket - 27-805760
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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. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.