876302 Head Gasket Set for Volvo Penta AQ131 AQ151 AQ125 AQ145 230 250 | JLM Marine

Head Gasket Set for Volvo Penta AQ131, AQ151, AQ125, AQ145, 230, 250 | Replaces 876302

This comprehensive head gasket set is engineered for Volvo Penta marine engines, including the AQ131, AQ151, AQ125, AQ145, 230, and 250 series. Designed as a decarbonizing kit, it provides all the essential gaskets needed for cylinder head service and overhaul work.

This aftermarket replacement directly replaces OEM part numbers 876302 and 876022, as well as aftermarket equivalent 18-2813. It includes the critical head gasket (replaces 1378646, 1326785, 1332644) along with all necessary sealing components for complete cylinder head reconditioning.

• Complete decarbonizing gasket set for Volvo Penta engines
• Includes head gasket and all associated sealing components
• High-quality marine-grade materials for reliable performance

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

This head gasket set includes all necessary gaskets for cylinder head service:

• Head gasket (replaces 1378646, 1326785, 1332644)
• Complete set of associated gaskets for decarbonizing work

Installation Guide

1. Disconnect the battery and allow the engine to cool completely before beginning work.
2. Remove the valve cover and drain coolant from the engine block.
3. Disconnect fuel lines, ignition wiring, and any hoses attached to the cylinder head.
4. Remove the intake and exhaust manifolds as required for access.
5. Loosen and remove cylinder head bolts in the reverse order of the tightening sequence (consult your service manual).
6. Carefully lift the cylinder head from the engine block and clean all mating surfaces thoroughly, removing all old gasket material and carbon deposits.
7. Inspect the cylinder head and block surfaces for warping or damage; resurface if necessary.
8. Position the new head gasket on the engine block, ensuring proper alignment with dowel pins and bolt holes.
9. Carefully lower the cylinder head onto the new gasket, aligning all bolt holes.
10. Install cylinder head bolts and tighten in the correct sequence to manufacturer-specified torque values in multiple stages.
11. Reinstall manifolds, valve cover (with new gasket), and reconnect all hoses, lines, and electrical connections.
12. Refill coolant, reconnect battery, start the engine, and check for leaks while monitoring operating temperature.

Troubleshooting & FAQ

Q: How do I confirm this gasket set fits my specific Volvo Penta engine?
A: Check the Compatible Engine Models table above for your exact model number (e.g., AQ131A, AQ151C, 230A). Also verify that your current OEM part number matches 876302, 876022, or the included head gasket numbers 1378646, 1326785, or 1332644.

Q: When should I replace my head gasket?
A: Replace the head gasket if you experience coolant leaks, white smoke from the exhaust, overheating, loss of compression, or when performing cylinder head removal for decarbonizing or valve work. Always use a new gasket set whenever the cylinder head is removed.

Q: Do I need to resurface the cylinder head when installing this gasket set?
A: It's recommended to inspect the cylinder head and block surfaces for flatness and warping. If surfaces are damaged or not within specification, professional resurfacing is necessary to ensure a proper seal and prevent future gasket failure.

Q: What torque specifications should I use for the head bolts?
A: Always follow the torque specifications and tightening sequence outlined in your Volvo Penta service manual for your specific engine model. Proper torque and sequence are critical to prevent gasket failure and ensure even clamping pressure.

Q: Does this set include valve cover gaskets and other seals?
A: This is a decarbonizing head gasket set that includes the head gasket and associated gaskets needed for cylinder head service. Always inspect your valve cover gasket and other seals during reassembly and replace as needed.

Q: Is this an OEM part or aftermarket?
A: This listing is an aftermarket replacement part. We build to OEM specifications using high-quality materials in an ISO9002-certified facility.

Important Notes

• Verify that the product images and specifications match your original part before purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.