Head Gasket Set – Fits Volvo Penta AQ131 AQ151 230 250 (Replaces 876302, 876022, 18-2813)

Product Details

This Head Gasket Set – Fits Volvo Penta AQ131 AQ151 230 250 is a complete decarbonizing gasket kit designed for Volvo Penta marine engines including the AQ131 series (AQ131A, AQ131B, AQ131C, AQ131D), AQ151 series (AQ151A, AQ151B, AQ151C), AQ125B, AQ145B, and 230/250 series (230A, 250A, 250B). This kit provides all essential gaskets needed for cylinder head service and maintenance.

Direct replacement for OEM part numbers 876302, 876022, and aftermarket equivalent 18-2813.

• Includes head gasket (1378646, 1326785, 1332644)
• Complete decarbonizing gasket set for thorough head servicing
• Compatible with multiple Volvo Penta engine configurations

Part Number Matrix

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

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Application

Cylinder head decarbonizing and gasket replacement

Part Type

Head gasket set

OEM Reference

876302

Aftermarket Reference

18-2813

What's in the Box

• Complete head gasket set (includes all gaskets needed for decarbonizing)
• Head gasket: 1378646, 1326785, 1332644

Installation Notes

1. Disconnect the battery and allow the engine to cool completely before beginning work.
2. Drain coolant and remove all components blocking access to the cylinder head.
3. Remove the cylinder head bolts in the sequence specified in your service manual, working from the outside inward.
4. Carefully lift the cylinder head away and inspect mating surfaces for damage, warping, or deep scoring.
5. Clean all gasket surfaces thoroughly using an appropriate scraper and solvent; do not gouge the metal.
6. Inspect the cylinder head for flatness using a straight edge and feeler gauge; resurface if necessary.
7. Position the new head gasket on the block, ensuring alignment dowels are properly seated.
8. Reinstall the cylinder head and torque bolts to specification in the correct sequence and stages per your manual.
9. Install remaining gaskets from the kit as you reassemble intake, exhaust, and cooling components.
10. Refill coolant, reconnect the battery, and run the engine to operating temperature while checking for leaks.
11. After the first few hours of operation, recheck head bolt torque if recommended by the manufacturer.

Troubleshooting & FAQ

How do I know if I need a new head gasket set?

Common signs include coolant loss without visible leaks, white smoke from the exhaust, oil contamination in coolant (or vice versa), overheating, rough idle, or loss of compression. If you're performing a decarbonizing service or cylinder head removal, replace the entire gasket set as a precaution.

Does this kit include all gaskets needed for head removal?

Yes, this is a complete decarbonizing (head) gasket set that includes the head gasket and all associated seals required for cylinder head service on the listed Volvo Penta engines.

What are the part numbers of the head gaskets included?

The kit includes head gasket references 1378646, 1326785, and 1332644, ensuring coverage across the AQ131, AQ151, and 230/250 engine families.

Can I reuse the old head bolts?

Consult your Volvo Penta service manual. Many manufacturers specify torque-to-yield (TTY) bolts that must be replaced. Reusing stretch bolts can result in improper clamping force and gasket failure.

Do I need sealant with these gaskets?

Follow the instructions in your service manual. Most modern composite head gaskets are designed to be installed dry. Use sealant only where explicitly specified by Volvo Penta.

Will this fit my Volvo Penta engine if the model isn't listed?

This set is confirmed for the models shown in the compatibility table. If your engine is not listed, verify the OEM part number (876302 or 876022) in your parts diagram before ordering.

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 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 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.