Exhaust Manifold Gasket – Fits MerCruiser/Volvo Penta 3.0L (Replaces 27-96429)
Exhaust Manifold Gasket – Fits MerCruiser/Volvo Penta 3.0L (Replaces 27-96429) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Free standard shipping on all orders under 1 KG
Exhaust Manifold Gasket – Fits MerCruiser/Volvo Penta 3.0L (Replace...
Product Details
This high-temperature composite Exhaust Manifold Gasket provides a reliable seal for specific MerCruiser, Volvo Penta, and OMC 3.0L (115-140 HP) 4-cylinder engines manufactured between 1983 and 1995. It is designed for Non-LX models, particularly for large port applications common in 1983–1985 models, ensuring proper fitment and preventing exhaust leaks.
This part serves as a direct replacement for Mercury 27-96429, Volvo Penta 853255, OMC 0912164, and other listed equivalents, offering a precise fit to restore engine performance.
- Engineered as a direct replacement for a hassle-free installation.
- Constructed from high-temperature composite material to withstand extreme heat and pressure.
- Specifically designed for Non-LX models with large port applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Mercury | 27-96429, 75832T1, 96429 |
| Volvo Penta | 853255, 897707 |
| OMC / Bombardier | 0508627, 0912164, 0912214, 0915716 |
| GLM | 33570 |
| Sierra | 18-1204 |
Engine & Model Compatibility
Confirm your engine model and year in the table below to ensure accurate fitment.
For MerCruiser Engines: This gasket fits various 2.5L and 3.0L models from 1983 to 1995. Verify your engine's serial number range against the table for precise matching.
For Volvo Penta & OMC/Bombardier Engines: This component is compatible with 3.0L 4-cylinder engines from a similar era, cross-referencing to the specified OEM part numbers.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 120 | 120 | 4-Stroke | 1983–1986 | 27-96429 | Serial Range: 6229718-0B531853 |
| MerCruiser | 140 | 140 | 4-Stroke | 1983–1986 | 27-96429 | Serial Range: 6229718-0B450800 |
| MerCruiser | 2.5L | 120 | 4-Stroke | 1987–1989 | 27-96429 | Serial Range: 0B531854-0C853255 |
| MerCruiser | 3.0L | 130 | 4-Stroke | 1987–1989 | 27-96429 | Serial Range: 0B450801-0C856558 |
| MerCruiser | 3.0L | 130-140 | 4-Stroke | 1990–1994 | 27-96429 | Serial Range: 0C856559-0F353099 |
| MerCruiser | 3.0L (115 HP) | 115 | 4-Stroke | 1983–1995 | 27-96429 | Non-LX models |
| MerCruiser | 3.0L HIGH OUTPUT | 130 | 4-Stroke | 1983–1995 | 27-96429 | Non-LX models |
| MerCruiser | 130/3.0L | 130 | 4-Stroke | 1983–1995 | 27-96429 | Non-LX models |
| MerCruiser | 140/3.0L | 140 | 4-Stroke | 1983–1995 | 27-96429 | Non-LX models |
| Volvo Penta | 3.0L | 130-140 | 4-Stroke | 1983–1995 | 853255/897707 | For 4-Cylinder 153/181 (2.5/3.0L) CID engines |
| OMC | 3.0L | 120-140 | 4-Stroke | 1983–1995 | 0912164 | For 4-Cylinder 153/181 (2.5/3.0L) CID engines |
| Bombardier | 3.0L | 120-140 | 4-Stroke | 1983–1995 | 0508627/0912164/0912214/0915716 | For 4-Cylinder 153/181 (2.5/3.0L) CID engines |
Technical Specs
- Product Type
- Exhaust Manifold Gasket
- Installation
- Direct replacement
- Material
- High temperature composite
- Dimensions
- 9.0" H x 50.4" L x 0.2" W
- Compatibility
- Non-LX models
- Other Technical Attributes
- For large port applications (1983-1985 Non-LX models)
What’s in the Box
- 1 x Exhaust Manifold Gasket (Replaces 27-96429)
Installation Notes
- Disconnect the battery and allow the engine to cool completely.
- Drain the engine block and exhaust manifold of coolant.
- Carefully label and disconnect any wires, hoses, or linkages attached to the manifold.
- Unbolt and remove the old exhaust manifold and gasket.
- Thoroughly clean both the cylinder head and manifold mating surfaces to remove all old gasket material and carbon deposits.
- Position the new gasket, ensuring it aligns correctly with the ports.
- Reinstall the exhaust manifold and tighten the bolts in the sequence and to the torque specifications recommended by the manufacturer.
- Reconnect all previously removed components.
- Refill the cooling system, reconnect the battery, and start the engine.
- Carefully check for any exhaust or coolant leaks around the manifold.
Troubleshooting & FAQ
How do I know if this is the right gasket for my engine?
This gasket is specifically for MerCruiser, Volvo Penta, and OMC 3.0L Non-LX models from 1983–1995. It's crucial for "large port" applications, mainly on 1983-1985 models. Always verify your engine model and year using our compatibility table and check your existing part number against our Part Number Matrix.
What are the signs of a failing exhaust manifold gasket?
Common symptoms include a loud ticking or tapping noise from the engine bay (especially when cold), a noticeable decrease in engine performance and fuel efficiency, visible soot or black streaks around the manifold-head joint, and the smell of exhaust fumes inside the boat.
Can I reuse my old manifold bolts?
It is best practice to replace exhaust manifold bolts, as they are subject to extreme heat cycles and can stretch or become brittle. Using new bolts ensures proper clamping force and a reliable seal. Always torque them to the manufacturer's specifications.
How often should this gasket be replaced?
There is no fixed replacement interval. It should be replaced whenever the manifold is removed or if signs of a leak appear. Its lifespan depends on engine hours, operating conditions (freshwater vs. saltwater), and proper installation.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It's built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch-inspections for quality and consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options will appear at checkout where available for your location.
Warranty & returns
This product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and 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, 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 reliability.
- Fast Global Fulfillment — Enjoy free standard delivery to most regions, typically arriving in 5–15 days.
- Manufacturer-Direct Value — By removing middlemen, we offer fair pricing without compromising on materials or quality control.
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