Mercury Quicksilver OEM Gasket 342731
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Mercury Quicksilver OEM Gasket 342731
Part Number: 342731
Brand: Mercury / Quicksilver
Product Type: OEM Gasket
Approximate Weight: 500 g (best estimate pending confirmed specification)
What This Part Is
The 342731 is a genuine Mercury / Quicksilver OEM gasket used in selected Mercury Marine or MerCruiser assemblies. At this price point, 342731 is likely a major gasket set, head gasket, or multi-component gasket assembly rather than a single small gasket. Confirm the exact application, assembly, and engine serial number using the applicable Mercury parts diagram before ordering.
Compatible Applications
Confirm your engine model, serial number, and the applicable Mercury parts diagram before ordering.
Serial Number Notice
Mercury gasket specifications vary by engine family, displacement, model year, and serial range. Always confirm 342731 against the exact diagram position and engine serial number before ordering. Do not order based on engine family alone — Mercury used different gasket assemblies across closely related engine configurations.
When to Replace
- Gasket is damaged, blown, or leaking
- Engine is undergoing a top-end rebuild or major overhaul
- Mating surfaces have been machined or resurfaced
- Assembly is being fully disassembled and reassembled
Installation Notes
- Clean all mating surfaces thoroughly before installation — remove all old gasket material without scoring the sealing surfaces
- Confirm the gasket orientation and position from the applicable Mercury service manual before installation
- Follow Mercury torque specifications and sequence for all fasteners associated with this gasket
- Do not reuse a gasket that has been removed from service
Part Number Cross-Reference
- OEM Part Number: 342731
Parts Desk Insights
Best use case: Order 342731 when the applicable Mercury parts diagram specifically calls out this gasket for a major service or rebuild on a Mercury or MerCruiser engine. Given the price point, confirm the full scope of the service before ordering — this is the type of part where ordering the wrong gasket set results in a significant return and reorder delay.
Common issues: The most common mistake with higher-value gasket assemblies is ordering by engine family or displacement without confirming the exact serial number. Mercury used different gasket configurations across closely related engine variants, and a gasket set that fits one production range may not fit another. Always verify against the engine serial number and Mercury parts diagram before placing the order.
Shipping information
In-stock and OEM parts: ship same or next business day.
Available items are ready for pickup or shipping between one and three 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.