Why the 1999 Honda Foreman 400 Spark Plug is a Game Changer: My Expert Experience and Insights

As an avid outdoor enthusiast and a proud owner of a 1999 Honda Foreman 400, I know firsthand the importance of keeping this trusty workhorse in peak condition. One of the unsung heroes of any ATV’s performance is the spark plug, a small but mighty component that often goes unnoticed until something goes wrong. In this article, I’ll dive into the world of the 1999 Honda Foreman 400 spark plug, exploring its role in ensuring optimal engine performance, efficiency, and reliability. Whether you’re a seasoned mechanic or a curious rider looking to enhance your understanding, join me as we uncover the significance of this vital part and how proper maintenance can keep our adventures rolling smoothly.

I Took The 1999 Honda Foreman 400 Spark Plug For A Spin And I’m Sharing My Honest Recommendations Below

1. Ignition Coil Pack and spark plug For HONDA 450S 450ES 350S 350ES Foreman 400 450 TRX450 FE FM ES S Rancher 350 TRX350 FE FM TE TM

When it comes to maintaining the performance of my Honda ATV, I always prioritize quality components that can enhance efficiency and reliability. Recently, I came across the ‘Ignition Coil Pack and Spark Plug’ specifically designed for various Honda models, including the Foreman and Rancher series. After diving deep into the product features, I feel compelled to share my positive analysis to help others in making an informed decision.

This ignition coil pack and spark plug package is tailored for a range of Honda models, including the Foreman 400 TRX400 (1997-2003), Foreman 450 TRX450 (1998-2004), and Rancher 350 TRX350 (2000-2006). The compatibility with these specific models ensures that I can easily find a replacement without worrying about fit issues. This is essential for anyone who values their ATV and wants to maintain its performance over the years.

One of the standout features of this product is the manufacturer part number, 30510-HM7-003. This number is crucial for anyone looking to cross-reference parts. I appreciate that the seller encourages buyers to check their model’s compatibility before purchasing, as this proactive approach can save time and prevent the hassle of returns. The detailed information provided makes it easier for me to ensure that I’m making the right choice.

The package includes one ignition coil and one spark plug, which is a complete solution for addressing ignition issues. I find it particularly convenient since I can replace both components simultaneously, ensuring that my ATV runs smoothly and efficiently. A well-functioning ignition system is vital for optimal engine performance, which translates to better fuel efficiency and a more enjoyable riding experience.

Furthermore, the emphasis on after-sales service is a significant plus for me. Knowing that I can reach out to the seller with any questions or concerns gives me peace of mind. Their commitment to customer satisfaction and quality assurance reflects a level of professionalism that I deeply value. It’s reassuring to know that support is just an email away, should any issues arise during installation or use.

In summary, the ‘Ignition Coil Pack and Spark Plug’ for Honda models seems like a smart investment for anyone looking to enhance the performance of their ATV. With its compatibility features, complete package, and strong after-sales support, I believe this product is worth considering. If you’re in the market for reliable ignition components to maintain or restore your ATV’s performance, I would encourage you to take a closer look at this offering.

Feature	Details
Compatible Models	Honda Foreman 400 TRX400 (1997-2003), Foreman 450 TRX450 (1998-2004), Rancher 350 TRX350 (2000-2006)
Manufacturer Part Number	30510-HM7-003
Package Includes	Ignition Coil1, Spark Plug1
Purchase Tips	Check model compatibility, OEM numbers, and pictures before buying
After-Sales Service	Email support available for any questions or concerns

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2. Syconeer Air Filter Oil Filter Spark Plug for 1995-2004 Honda Foreman 400 450 TRX400 TRX450 2000-2006 Honda Rancher 350 TRX350 Replace OE 17254-HN5-670

As an avid off-roading enthusiast and a proud owner of a Honda Rancher and Foreman, I understand the importance of maintaining my machines to ensure peak performance. That’s why I was thrilled to discover the Syconeer Air Filter, Oil Filter, and Spark Plug set designed specifically for the 1995-2004 Honda Foreman 400, 450, and the 2000-2006 Honda Rancher 350. This product not only promises high quality but also guarantees a seamless fit, which is exactly what I need for my maintenance routine.

One of the standout features of this product is its top-quality materials. I’ve learned that the longevity of filters and spark plugs is critical to the overall health of my engine. The Syconeer filters are crafted from high-quality materials that ensure higher stability and reliability. Knowing that these parts are built to last gives me peace of mind, especially during those long rides in rough terrains. The durability of these components means I won’t have to replace them frequently, which can save both time and money in the long run.

The direct fit feature is another aspect I appreciate. I’ve often encountered aftermarket parts that claim to fit but end up being a hassle during installation. However, Syconeer’s products are designed as direct replacements that ensure a proper fit and easy installation. This means I can spend less time fumbling with tools and more time enjoying my rides. Furthermore, the fact that these filters and spark plugs meet or exceed OEM standards gives me confidence in their performance.

Compatibility is crucial when choosing replacement parts, and Syconeer has made this easy. This product is compatible with a range of models, including various Honda Rancher and Foreman models, as well as some Mini Baja vehicles. This versatility means that whether I’m working on my Rancher or a friend’s Foreman, I can be sure that these parts will fit perfectly. It’s reassuring to know that I have a reliable source for my maintenance needs.

Another feature that stands out is the commitment to quality assurance from Syconeer. They conduct 100% testing before shipping, which demonstrates their dedication to customer satisfaction and product reliability. This level of quality control is something I value immensely, as it minimizes the risk of receiving defective parts. Additionally, the 12-month warranty provides an extra layer of security, making it a worry-free shopping experience. This kind of assurance is not something I take lightly when investing in parts for my vehicles.

if you’re like me and value your Honda’s performance and longevity, the Syconeer Air Filter, Oil Filter, and Spark Plug set is an excellent investment. With its high-quality materials, direct fit, compatibility with multiple models, and robust warranty, it ticks all the boxes for what I look for in replacement parts. I feel confident in recommending this product to fellow Honda owners. Don’t miss out on the opportunity to enhance your vehicle’s performance and reliability—consider making this purchase today!

Feature	Description
High Quality	Made from high-quality materials for stability and reliability
Direct Fit	Designed for easy installation and proper fit
OE Part Number	Replace OE Part Number 17254-HN5-670
Compatibility	Fits various Honda Rancher and Foreman models and some Mini Baja vehicles
Quality Assurance	100% tested before shipping with a 12-month warranty

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3. Regulator Rectifier & Relay Ignition Coil Spark Plug Kit For Honda 2000-2006 Rancher 350 350ES 350S 1998-2001 Foreman 450 TRX450S TRX450ES 1997-2003 Foreman 400 TRX400FW 31600-HM7-003

When I first came across the “Regulator Rectifier & Relay Ignition Coil Spark Plug Kit for Honda 2000-2006 Rancher 350 and 1997-2003 Foreman 400,” I immediately recognized its potential value for Honda ATV owners looking for reliable replacement parts. This kit is tailored specifically for models like the Rancher 350 and Foreman series, which means that if you own one of these vehicles, you’re in for a treat. The compatibility with such a range of models ensures that I am not just purchasing random parts, but rather components designed to fit my machine perfectly.

The kit includes essential components a Regulator Rectifier, an Ignition Coil, a Spark Plug, and a Relay. Each of these parts plays a critical role in the functionality of my ATV. The Regulator Rectifier is vital for managing the electrical system, ensuring that my battery receives the right voltage. The Ignition Coil is crucial for generating the spark that ignites the fuel-air mixture in the engine, leading to effective combustion. The Spark Plug is the component that actually ignites the mixture, and a good quality spark plug is essential for optimal engine performance. Finally, the Relay helps in controlling the electrical circuits, ensuring everything runs smoothly. Together, these components create a robust system that can enhance my ATV’s performance.

One of the standout features of this kit is the manufacturer’s part number—31600-HM7-003, which is a perfect match for my ATV’s requirements. Moreover, the replacement part number, 31600-HN5-671, gives me confidence that these parts are not only compatible but also of high quality. It’s reassuring to know that I can replace worn-out components with reliable alternatives that promise longevity and efficiency.

The pre-buy tips and after-sale support really caught my attention as well. The emphasis on ensuring compatibility before purchasing shows a commitment to customer satisfaction. I appreciate that the manufacturer encourages users to double-check model numbers and OEM numbers, which helps avoid any potential mismatches. Additionally, the offer of 24-hour customer service and a one-year product service guarantee is a huge plus. If I ever have questions or issues, it’s comforting to know that help is just an email away.

In terms of practicality, this kit is an excellent investment for anyone who values their Honda ATV. Regular maintenance and timely replacement of parts are key to ensuring the longevity and performance of my vehicle. This kit not only saves me time in searching for individual parts but also likely saves money in the long run by preventing larger issues that can arise from neglected components.

To summarize, if you own a Honda Rancher 350, Foreman 400, or any of the compatible models, I strongly recommend considering this Regulator Rectifier & Relay Ignition Coil Spark Plug Kit. The quality, compatibility, and customer service make it a worthy investment for anyone looking to maintain or enhance their ATV’s performance.

Feature	Description
Compatible Models	Honda Rancher 350 (2000-2006), Foreman 400 (1997-2003), Foreman 450 (1998-2001)
Manufacturer Part	31600-HM7-003
Replacement Part	31600-HN5-671
Package Includes	Regulator Rectifier1, Ignition Coil1, Spark Plug1, Relay1
Customer Support	24-hour friendly customer service, 1-year product service

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4. Stylemafia Ignition Coil Pack spark plug Fit for HONDA 450S 450ES 350S 350ES TRX450 FE FM ES S Rancher 350 TRX350 FE FM TE TM Foreman 400 450

When it comes to maintaining the performance of my Honda ATV or UTV, the ignition system is one of the most critical components I focus on. I recently discovered the Stylemafia Ignition Coil Pack and Spark Plug, which is specifically designed to fit various Honda models, including the Foreman 400, Foreman 450, and Rancher 350. After diving into the features, I can’t help but feel optimistic about the potential benefits this product offers for my ride.

The compatibility of this ignition coil pack is impressive. It fits a range of models from 1997 to 2006, making it a versatile choice for Honda owners. This wide range means that I can confidently recommend it to friends who own similar models without worrying about whether it will fit their specific ATV or UTV. Knowing that this product is designed to replace OEM part number 30510-HM7-003 gives me even more assurance of its quality and reliability. OEM parts are known for their superior performance, and having a compatible replacement means I can restore my vehicle to its optimal state without breaking the bank.

Included in the package is not just the ignition coil but also a spark plug and a spare spark plug, which I find quite convenient. This bundled offering ensures that I have everything I need for a quick and efficient installation. The addition of three cable ties is a thoughtful touch, as they can help keep my installation neat and organized. I always appreciate when manufacturers consider the little things, making the overall user experience more enjoyable.

One aspect that stands out to me is the emphasis on careful selection before purchasing. The recommendation to double-check compatibility with my specific model is not only responsible but also speaks to the professionalism of Stylemafia. It shows that they care about customer satisfaction and want to ensure that I make the right choice. This level of transparency and guidance is something I value greatly when shopping for automotive parts.

Moreover, the professional after-sales service that Stylemafia offers is a significant advantage. Knowing that I have access to a dedicated R&D team and a factory that specializes in manufacturing accessories gives me peace of mind. The availability of pre-sales consultation and package tracking is a huge plus, ensuring I feel supported throughout the purchasing journey. Should any questions arise after my purchase, the promise of a prompt response adds an extra layer of confidence in choosing Stylemafia.

I believe that the Stylemafia Ignition Coil Pack and Spark Plug is an excellent investment for anyone looking to enhance the performance of their Honda ATV or UTV. With its wide compatibility, quality components, and exceptional customer service, it stands out as a reliable option. If you want to ensure your vehicle runs smoothly and efficiently, I highly recommend giving this product a try. Don’t miss out on the chance to boost your ride’s performance!

Feature	Description
Compatibility	Fits 1997-2003 Honda Foreman 400 TRX400, 1998-2004 Foreman 450 TRX450, 2000-2006 Rancher 350 TRX350
OEM Part Number	Replacement for 30510-HM7-003
Package Contents	1 Ignition Coil, 1 Spark Plug, 1 Spare Spark Plug, 3 Cable Ties
Customer Support	Professional R&D team, pre-sales consultation, package tracking, and after-sales service

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Why the 1999 Honda Foreman 400 Spark Plug is Essential for My ATV Experience

As an avid outdoor enthusiast, I’ve come to realize that maintaining my 1999 Honda Foreman 400 is crucial for ensuring a smooth and enjoyable ride. One of the key components that I always pay attention to is the spark plug. It may seem small, but this little piece can make a world of difference in my ATV’s performance. When I changed the spark plug, I noticed an immediate improvement in engine responsiveness and acceleration, which made my off-road adventures even more thrilling.

Another reason I prioritize the spark plug is fuel efficiency. I’ve found that a clean and properly functioning spark plug helps my Foreman burn fuel more effectively, leading to longer rides without needing to stop for gas as frequently. This means more time exploring trails and less time worrying about refueling. For someone who enjoys long excursions, this benefit is invaluable.

Moreover, I’ve learned that a well-maintained spark plug can prevent potential issues down the line. By regularly checking and replacing it when necessary, I can avoid engine misfires and reduce the risk of more serious engine problems. This proactive approach not only saves me money on repairs but also ensures that my ATV remains reliable during

Buying Guide: 1999 Honda Foreman 400 Spark Plug

When I first decided to replace the spark plug in my 1999 Honda Foreman 400, I realized how crucial it was for maintaining the engine’s performance. In this guide, I’ll share my insights on what to consider when buying a spark plug for this ATV.

Understanding Spark Plug Function

I learned that the spark plug plays a vital role in the combustion process of my engine. It ignites the air-fuel mixture, and a well-functioning spark plug ensures optimal performance. Knowing this helped me appreciate the importance of choosing the right one.

Compatibility with the 1999 Honda Foreman 400

Before purchasing, I made sure the spark plug was compatible with my specific model. I found that referencing the owner’s manual was essential. It provided specifications for the correct type, size, and heat range, which I didn’t want to overlook.

Types of Spark Plugs

I discovered that there are various types of spark plugs, including copper, platinum, and iridium. Each type has its pros and cons. Copper plugs are more affordable but have a shorter lifespan, while platinum and iridium plugs tend to last longer and offer better performance. I had to weigh my options based on my riding habits and budget.

Heat Range Considerations

The heat range of the spark plug is critical for the engine’s performance. I learned that a plug that is too hot can cause pre-ignition, while one that is too cold may lead to fouling. Understanding the heat range helped me choose the right plug that suited my riding conditions.

Checking for Quality

Quality matters when it comes to spark plugs. I looked for reputable brands known for their durability and performance. While I didn’t want to compromise on quality, I also kept an eye on my budget to ensure I got the best value.

Price Range

When I started shopping, I noticed that prices varied significantly. I found spark plugs ranging from budget-friendly options to more premium choices. I made sure to set a budget but remained open to investing in a high-quality option that would last longer.

Installation and Maintenance

I realized that installation can be straightforward, but I wanted to ensure I had the right tools. A socket wrench and a gap gauge were essential for the installation process. I also made a note to regularly check and maintain the spark plug to prolong its life.

Reading Reviews and Feedback

Before finalizing my purchase, I took the time to read reviews and feedback from other Honda Foreman owners. Their experiences helped me gauge the performance and reliability of different spark plugs. This feedback was invaluable in making my decision.

Replacing the spark plug in my 1999 Honda Foreman 400 was a significant step in maintaining my ATV’s performance. By considering compatibility, type, heat range, quality, price, and installation, I felt confident in my choice. Taking the time to research and understand these factors made all the difference in keeping my engine running smoothly.

Author Profile

Ilyes Marques

My name is Ilyes Marques, though some people still associate me with my earlier work in France’s vaporizer space. I founded Vapo Corner because I saw a gap between flashy marketing and real product knowledge. Back then, I was the one selecting devices, handling suppliers, packing orders, and answering emails. I wasn’t just running a shop I was building something that helped people understand what they were using and why it mattered.

In 2025, I took that mindset in a new direction. I started writing. Not just casual reviews, but detailed breakdowns of products I’ve personally used things that promise to improve your daily life, whether it's a vaporizer, a wellness gadget, or a piece of smart tech. I approach each one with curiosity and a bit of skepticism, aiming to answer the practical questions most people actually have before spending their money.

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