Cylinder Head Gasket – Fits MerCruiser/Volvo Penta/OMC V6 4.3L (Replaces 17010, 27-879150140)

$38.00 $60.00

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Cylinder Head Gasket – Fits MerCruiser/Volvo Penta/OMC V6 4.3L (Replaces 17010, 27-879150140) is backordered and will ship as soon as it is back in stock.

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If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This replacement Cylinder Head Gasket is engineered for V6 4.3L gasoline marine engines from MerCruiser (1985–2008), Volvo Penta (1990–2008), and OMC (1985–2004). It provides a reliable seal for the cylinder head to the engine block, ensuring optimal compression and performance.

It serves as a direct replacement for MerCruiser part numbers 17010 and 27-879150140, Volvo Penta 3854299, and OMC 3854299, among other equivalents.

Installs as a direct replacement part.
Constructed from Multi-Layer Steel (MLS) for enhanced durability and sealing.
Designed specifically for GM V6 4.3L (262 CID) marine engines.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
MerCruiser	17010
MerCruiser	27-879150140
MerCruiser	816460
MerCruiser	879150140
Volvo Penta	3854299
Volvo Penta	841733
Volvo Penta	856371
OMC	3854299
Bombardier	0509243
Bombardier	3854299
FelPro	17010

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For MerCruiser Engines: Fits various 4.3L models produced between 1985 and 2008 with horsepower ratings from 155 to 205 HP.

For Volvo Penta Engines: Compatible with 4.3L Gi, GL, and GS series from 1990 to 2008, along with models 430, 431, 432, and 434.

For OMC Engines: Fits 4.3L models from 1985 to 2004 with horsepower ratings between 150 and 205 HP.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
MerCruiser	4.3L	155	4-Stroke	1985–2008	17010, 27-879150140
MerCruiser	4.3LX	175-180	4-Stroke	1986–2008	17010, 27-879150140
MerCruiser	4.3LX	205	4-Stroke	1986–2008	17010, 27-879150140	4 barrel carburetor version
MerCruiser	4.3L	175-185	4-Stroke	1985–2008	17010, 27-879150140	2 barrel carburetor version
Volvo Penta	4.3 Gi	205	4-Stroke	1990–2008	3854299
Volvo Penta	4.3 GL	190	4-Stroke	1990–2008	3854299
Volvo Penta	4.3 GS	205	4-Stroke	1990–2008	3854299
Volvo Penta	430, 430 DP	155	4-Stroke	1990–2008	3854299
Volvo Penta	431	180-205	4-Stroke	1990–2008	3854299
Volvo Penta	432 DP	164	4-Stroke	1990–2008	3854299
Volvo Penta	434 DP	187	4-Stroke	1990–2008	3854299
OMC	4.3L	150-160	4-Stroke	1985–2004	3854299
OMC	4.3L	175-180	4-Stroke	1985–2004	3854299
OMC	4.3L	205	4-Stroke	1985–2004	3854299

Technical Specs

Product Type: Cylinder Head Gasket
Installation: Direct Replacement
Fuel Type: Gasoline
Housing Material: Multi-Layer Steel (MLS)
Housing Color: Silver/Metallic
Dimensions: 68.0 cm (L) x 28.0 cm (W) x 0.2 cm (H)
Other Technical Attributes: For GM V6 4.3L (262 CID) Engines
Warranty: 1 Year (Typical Aftermarket)

What’s in the Box

1 x Cylinder Head Gasket (Replaces 17010, 27-879150140, 3854299)

Installation Notes

Disconnect the battery and completely drain the engine's cooling system.
Relieve fuel pressure safely according to the service manual, then disconnect fuel lines.
Remove the intake and exhaust manifolds, valve covers, and rocker arm assemblies.
Loosen and remove the cylinder head bolts in the reverse order of the tightening sequence specified in your engine's service manual.
Carefully lift the cylinder head from the engine block. Avoid using pry tools that could damage the mating surfaces.
Remove the old head gasket. Thoroughly clean all residue from both the engine block and cylinder head surfaces.
Check surfaces for flatness using a straightedge and feeler gauge to ensure they are within specification.
Position the new gasket over the dowel pins on the engine block. Do not use any sealant unless specified for MLS gaskets.
Carefully lower the cylinder head back into place without dislodging the gasket.
Install new or verified head bolts. Lubricate and torque them in stages, following the manufacturer's specified sequence and torque values.
Reinstall all other components in the reverse order of removal.
Refill the cooling system, change the engine oil and filter, and reconnect the battery. Start the engine and check for any leaks.

Troubleshooting & FAQ

How do I know if my cylinder head gasket is failing?

Common signs include engine overheating, white smoke from the exhaust (burning coolant), milky or discolored engine oil (coolant and oil mixing), loss of coolant without visible leaks, or poor engine performance due to loss of compression.

Will this gasket fit my specific engine year?

This gasket fits a wide range of MerCruiser, Volvo Penta, and OMC 4.3L V6 engines. The year ranges are approximate. The most reliable method is to cross-reference the part number from your old gasket or service manual with the numbers in our Part Number Matrix.

What causes a head gasket to fail?

The primary cause of head gasket failure is engine overheating. Detonation (engine knock), improper installation, or pre-existing surface warping on the head or block can also lead to premature failure.

Do I need to use sealant with this MLS gasket?

No. Multi-Layer Steel (MLS) gaskets like this one are designed to be installed dry. The specialized coatings on the gasket create the necessary seal. Using additional sealants can interfere with this process and cause leaks.

Should head bolts be replaced with the gasket?

It is highly recommended. Many head bolts on modern engines are Torque-to-Yield (TTY), meaning they permanently stretch upon initial installation and cannot be safely reused. Always consult your service manual to confirm.

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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