876431 Head Decarbonizing Gasket Kit for Volvo Penta MD7A MD7B | JLM Marine

Head Decarbonizing Gasket Kit for Volvo Penta MD7A MD7B Marine Engine – 876431

This Head Decarbonizing Gasket Kit is specifically designed for Volvo Penta MD7A and MD7B marine diesel engines (S/N: 35145 and later). It provides all the essential gaskets needed for head decarbonization and maintenance procedures, ensuring proper sealing and engine performance.

This kit directly replaces Volvo Penta 876431, 875613, and 876430, as well as aftermarket equivalents from Crom Marine (121047, 121046) and Orbitrade (21431, 21430), offering broad cross-compatibility for your service needs.

• Complete gasket kit for head decarbonization procedures
• Fits Volvo Penta MD7A and MD7B marine diesel engines
• Replaces multiple OEM and aftermarket part numbers

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 package includes:

• 1 × Head Decarbonizing Gasket Kit (complete set)

Installation Guide

1. Ensure the engine is completely cool and disconnect the battery before beginning any work.
2. Remove the cylinder head cover and set aside all fasteners in an organized manner.
3. Carefully remove the old gaskets from all mating surfaces, ensuring no remnants remain.
4. Clean all sealing surfaces thoroughly with appropriate solvent and a non-abrasive scraper. Allow surfaces to dry completely.
5. Inspect the cylinder head and block for cracks, warping, or damage before proceeding.
6. Position the new gaskets from the kit onto the cleaned surfaces, following the correct orientation.
7. Reinstall the cylinder head or components, ensuring proper alignment with dowel pins if present.
8. Torque all fasteners to the manufacturer's specifications in the correct sequence (consult your service manual).
9. Reinstall the cylinder head cover with the new gasket, tightening fasteners evenly.
10. Reconnect the battery and perform a visual inspection for proper gasket seating.
11. Start the engine and allow it to reach operating temperature while monitoring for leaks.
12. After initial run-in, re-check all fastener torque values as recommended by the manufacturer.

Troubleshooting & FAQ

Q: How do I confirm this gasket kit fits my Volvo Penta engine?
A: Verify that your engine is a MD7A or MD7B model with serial number 35145 or later. Cross-reference your existing part number (876431, 875613, or 876430) with the numbers listed in the Part Number Cross-Reference table above.

Q: What's included in this head decarbonizing gasket kit?
A: This is a complete head decarbonizing gasket kit that includes all necessary gaskets required for head decarbonization procedures on MD7A and MD7B engines. The kit provides all sealing components needed for proper reassembly.

Q: When should I replace the head gaskets on my Volvo Penta MD7?
A: Replace head gaskets during decarbonization services, when performing cylinder head removal for any reason, or if you notice signs of gasket failure such as coolant leaks, oil leaks, overheating, or loss of compression.

Q: Can I reuse the old gaskets if they look intact?
A: No, gaskets should never be reused. Once compressed and torqued, gaskets lose their sealing ability and may cause leaks or engine damage if reinstalled.

Q: Is this an OEM or aftermarket gasket kit?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.