SKU: 49569352504

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

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Description

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

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:

Brand Part Number
Volvo Penta 876431
Volvo Penta 875613
Volvo Penta 876430
Crom Marine 121047
Crom Marine 121046
Orbitrade 21431
Orbitrade 21430

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model Notes
Volvo Penta MD7A S/N: 35145 and later
Volvo Penta MD7B S/N: 35145 and later

Technical Specifications

Specification Value
OEM Number 876431
Product Type Head Decarbonizing Gasket Kit
Application Marine Diesel Engine
Compatible Engines Volvo Penta MD7A, MD7B

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 49569352504

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Samuel
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★★★★★ 2
Don't buy, check HIS github or google collab for EVERYTHING that's in this book. NO SOLUTION
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I never write reviews, but after this book I need to. DON'T BUY IT. DO NOT BUY THIS BOOK. Feels like a money grab. You are literally paying money for NOTHING buying this book. Long story short: GO TO HIS GITHUB AND GET IT ALL FOR FREE BECAUSE HE DOES NOT PROVIDE SOLUTIONS. GO ON GITHUB OR GOOGLE COLLAB AND CALL IT A DAY. In the intro he makes it seem like you don't need to know much programming or any tbh. He says if you have never programmed you should be able to read this book. HELL NO, I mean yeah you could probably figure it out, but I would not let someone that doesn't know any programming to start with this. I'd probably tell you to learn the basics of python for a week before starting at the very least. He also makes it seem like you don't need much knowledge of physics. Meh, maybe. Anyway the main reason not to buy: IT'S ALL AVAILABLE FOR FREE ON GITHUB THAT HE PUBLISHES FOR FREEEEEE. You can also use google collab, which he has up for FREEE. and if you are are a beginner I'd recommend you go off teh google collab, that way you don't have to deal with downloading anaconda and setting up an enviroment in jupyter which I think can be intimidating for a beginner. And this book doesn't really give much help in setting up everything in jupyter notebook. Also another point. He'll lead you through an example each lesson, but for the exercises he has you working on he doesn't provide a solution ANYWHERE. like why tf would you buy this book? How do you expect to learn with no feedback? You need to search online for ways to solve these problems, which I think is not a bad skill to have, but if you are new to a subject or trying to learn and you pay for a book why can't i at the very least get some solutions. even math textbook give you solutions, because the understanding is that you can make your own attempt and CHECK TO SEE IF YOU ARE RIGHT. DUHH !
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Reviewed in the United States on February 8, 2026

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