Gasket – Fits Mercury/Mercruiser 175 HP V-6 (1976-1988) (Replaces 27-75786)
Gasket – Fits Mercury/Mercruiser 175 HP V-6 (1976-1988) (Replaces 27-75786) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Gasket – Fits Mercury/Mercruiser 175 HP V-6 (1976-1988) (Replaces 2...
Product Details
This replacement Gasket fits Mercury/Mercruiser 175 HP V-6 engines produced from 1976–1988. It is designed to create a reliable seal within the engine assembly, preventing fluid or gas leaks to ensure proper performance.
This part is a direct replacement for Mercury/Mercruiser OEM part number 27-75786.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Mercruiser | 27-75786 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Years | OEM Part No. |
|---|---|---|---|---|
| Mercury/Mercruiser | V-175 | 175 | 1976–1988 | 27-75786 |
Technical Specs
- Product Type
- Gasket
- Dimensions
- 40.0cm L x 30.0cm W x 0.2cm H
What’s in the Box
- 1 x Gasket (27-75786)
Installation Notes
- Ensure the engine is off, cool, and the battery is disconnected for safety.
- Access the component where the gasket is located, such as the driveshaft housing or exhaust tube assembly.
- Carefully remove the old, worn gasket. Thoroughly clean the mating surfaces to remove any old sealant or residue.
- Place the new gasket into position, ensuring it aligns correctly with bolt holes and passages.
- Reassemble the components, tightening bolts in the sequence and to the torque values specified by the manufacturer.
- After reassembly, reconnect the battery, start the engine, and inspect for any leaks.
Troubleshooting & FAQ
How do I know if this gasket fits my engine?
This gasket is specifically for Mercury/Mercruiser 175 HP V-6 models from 1976 to 1988. Please verify your engine model and year, and cross-reference the OEM part number 27-75786.
Where is this gasket typically installed?
Based on assembly diagrams, this gasket is often used in the driveshaft housing and exhaust tube area. Always refer to your engine's service manual for the exact location and application.
What are the signs of a failing gasket?
Symptoms of a bad gasket can include visible fluid leaks (water or oil), engine overheating, loss of power, or unusual exhaust noises. A visual inspection may reveal cracks or degradation of the old gasket material.
When should engine gaskets be replaced?
Gaskets should be replaced whenever a component is removed for service or repair. They are typically not reusable. They should also be replaced immediately if you detect signs of failure like leaks or performance issues.
Is this gasket different from the original OEM part?
While this is an aftermarket part, it is manufactured to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function, providing a reliable seal at a better value.
Do I need to use sealant with this gasket?
This depends on the specific application and manufacturer recommendations. Some gaskets are designed to be installed dry, while others require a sealant. Always consult your service manual for the correct procedure for your engine.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- 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 QC.
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