Gasket 27-880642003 – Fits Mercury Marine (Replaces 27-880624003, 880642003)
Gasket 27-880642003 – Fits Mercury Marine (Replaces 27-880624003, 880642003) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This aftermarket Gasket 27-880642003 is engineered by Recmar to fit select Mercury Marine outboard motors, serving as a high-quality replacement to ensure a precise, reliable seal.
It is a direct interchange for Mercury Marine part numbers 27-880624003, 880624003, 27-880642003, and 880642003.
- Designed for marine engine environments.
- Ensures a proper seal to prevent fluid or pressure leaks.
- Includes one gasket as pictured.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury Marine | 27-880642003 | Replaces legacy part number 27-880624003 |
| Mercury Marine | 880642003 | Replaces legacy part number 880624003 |
Technical Specs
- Product Type
- Engine Gasket
- Manufacturer
- Recmar (Aftermarket)
- Dimensions
- 30.5 × 29.7 × 0.2 cm
- Weight
- 0.11 kg (0.24 lb)
- OEM Brand
- Mercury Marine
What’s in the Box
- 1 x Gasket (27-880642003)
Installation Notes
- Disconnect the battery and allow the engine to cool completely before starting work.
- Remove the engine cover and any components blocking access to the old gasket.
- Carefully remove the old gasket. Thoroughly scrape and clean both mating surfaces to remove all residue, oil, and debris.
- Align the new gasket correctly with all bolt holes and passages. Do not use force.
- Reassemble all components in the reverse order of removal.
- Tighten all fasteners to the manufacturer’s specified torque settings and sequence to ensure an even seal.
Troubleshooting & FAQ
How do I confirm this gasket fits my engine?
This part replaces OEM numbers 27-880642003 and 880642003. The most reliable way to ensure fitment is to verify your existing part number against these references. If your part number matches, it is a compatible replacement.
What are the signs of a failing engine gasket?
Common symptoms include external oil or coolant leaks, engine overheating, a noticeable loss of power or compression, or milky, discolored engine oil, which indicates water contamination.
Should I use sealant with this gasket?
This gasket is typically designed for a dry installation. However, always refer to your specific engine's service manual, as some applications may require a light, even coat of a recommended sealant.
What’s the difference between OEM and aftermarket parts?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.
How much is shipping and how fast is it?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available for your location.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement component, not an OEM part.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control.
Payment & Security
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