Mercury Complete Engine Gasket Set 27-42364A92 | 6–15 HP 2-Stroke
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Mercury Complete Engine Gasket Set 27-42364A92 | 6–15 HP 2-Stroke
Part Number: 27-42364A92 (short ref: 42364A92)
Brand: Mercury / Quicksilver
Product Type: Complete Engine Gasket Set (OEM)
System: Powerhead and Lower Unit
Supersedes: 42364A91, 42364A86
Quantity: 1 complete set per engine
GTIN / UPC: 745061147539
Approximate Weight: 400 g
What This Part Is
The 27-42364A92 is a genuine OEM complete engine gasket and seal set for selected small Mercury and Mariner 2-stroke outboards. It covers both powerhead and lower-unit sealing surfaces, making it the correct kit for a full engine service or powerhead rebuild. It is not a top-end-only gasket kit — the set includes seals and gaskets for multiple engine areas from the reed block through to the driveshaft housing.
Compatible Applications
Confirm your engine horsepower, serial number, and gasket-set diagram before ordering. Component usage within this set varies by engine model and serial range — not every gasket in the set is used on every supported engine.
- Mercury / Mariner 6 HP 2-stroke — selected 1986–1993 applications
- Mercury / Mariner 8 HP 2-stroke — selected 1986–1993 applications
- Mercury / Mariner 9.9 HP 2-stroke — selected 1986–1993 applications
- Mercury / Mariner 10 HP / 10 Magnum / 10 Marathon — selected 1990–1998 applications
- Mercury XR10 — selected applications
- Mercury / Mariner 15 HP 2-stroke — selected 1988–1993 applications
Kit Contents
Component listings associated with 27-42364A92 include gaskets and seals for the following areas. Exact component usage varies by engine model:
- Reed block gasket
- Baffle plate gasket
- Exhaust cover gasket
- Cylinder block cover gasket
- Intake cover gasket (applies to certain 6/8 HP configurations — not used on all engines)
- Thermostat cover gasket
- Powerhead-to-adapter-plate gasket
- Water-tube seal
- Water-tube gasket
- Driveshaft-housing gasket
- Lower-unit O-ring
- Water-inlet-tube seal
Verify component usage against the Mercury service diagram for your specific engine model before assembly.
Serial Number Notice
42364A92 spans several Mercury and Mariner horsepower families and production ranges. Confirm the engine horsepower, serial number, and complete gasket-set parts diagram before ordering. Mercury catalog data shows the same kit covering multiple production groups including 6 HP, XR10, 10 Magnum, 10 Marathon, and related small-outboard applications — individual gasket usage within the kit changes between models.
When to Use This Gasket Set
- Powerhead teardown or complete rebuild
- Cylinder block or cover service
- Exhaust-cover removal and replacement
- Reed-block or intake service
- Thermostat or cooling-passage overhaul
- Powerhead removal from the driveshaft housing
- Lower-unit or water-tube sealing service as part of a broader engine rebuild
Installation Notes
- Match each gasket and seal to the exact Mercury service diagram for the engine being rebuilt
- Clean all mating surfaces and inspect aluminum sealing surfaces for corrosion, distortion, or old gasket material before assembly
- Do not assume every gasket in the kit is used on your specific engine — confirm component applicability by model before installation
- Replace all gaskets and seals contacted during the service, even if they appear serviceable
Part Number Cross-Reference
- Current OEM: 27-42364A92
- Short Reference: 42364A92
- Supersedes: 42364A91
- Supersedes: 42364A86
- Supersession chain: 42364A86 → 42364A91 → 42364A92
Parts Desk Insights
Best use case: Order 27-42364A92 when doing a full powerhead rebuild or major engine service on a supported 6–15 HP Mercury or Mariner 2-stroke — having the complete set on hand avoids delays when additional sealing surfaces are encountered during disassembly.
Common issues: The most frequent mistake is assuming every gasket in the kit applies to every supported engine. Component usage varies by horsepower and serial range — confirm against the Mercury service diagram for your specific model before assembly to avoid incorrect installation of inapplicable gaskets.
Related Parts
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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:
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