NGK LMAR7M-9S Spark Plug 31909-HL4-AJ1

( Brand: Ngk ), ( Manufacturer Part Number: LMAR7M-9S ), ( Type: Spark Plug )

Review NGK Spark Plug New

Detailed Product Description for NGK LMR7M-9S 31909-HL4-AJ1 Spark Plug

The NGK LMR7M-9S 31909-HL4-AJ1 Spark Plug is a high-quality automotive component designed to deliver exceptional performance and reliability. This spark plug is part of NGK's LTR series, known for its advanced technology and durability.

The NGK LMR7M-9S spark plug features a long insulator nose length (9.6mm) and a heat range of HL4. The extended insulator nose is designed to prevent carbon deposits and fouling, ensuring optimal combustion efficiency and extended service life. The HL4 heat range is ideal for high-performance applications, providing a balance between quicker warm-up and reduced heat transfer to the cylinder head, thus reducing the risk of pre-ignition and engine knocking.

The center electrode of the NGK LMR7M-9S spark plug is made of Iridium alloy, which is renowned for its superior strength and durability. The small Iridium particle diameter ensures a precise spark, resulting in faster ignition and increased fuel efficiency. The platinum ground electrode enhances the spark plug's lifespan by providing excellent resistance to wear and erosion.

This spark plug is designed to fit various models of high-performance vehicles, including some sports cars, motorcycles, and marine engines. It is a direct replacement for OEM spark plugs and is recommended for use with unleaded gasoline.

In summary, the NGK LMR7M-9S 31909-HL4-AJ1 Spark Plug is an advanced automotive component that delivers fast ignition, improved fuel efficiency, and extended service life. Its long insulator nose, Iridium center electrode, and platinum ground electrode make it an excellent choice for high-performance applications.

The NGK LMAR7M-9S 31909-HL4-AJ1 spark plug is a high-performance product designed for modern engines. Here are some pros and cons to help you make an informed decision:

1. High-Quality Material: NGK spark plugs are renowned for their durability and high-quality materials, ensuring long-lasting performance.

2. Improved Engine Performance: This spark plug can help improve your engine's performance, fuel efficiency, and reduce emissions.

3. Heat Range: The heat range of this plug is suitable for a wide range of driving conditions, optimizing combustion and reducing the risk of pre-ignition or misfires.

4. Copper Plus Center Electrode: This electrode provides excellent performance under high heat conditions, enhancing ignitability and accelerating combustion.

1. Price: Compared to standard spark plugs, the NGK LMAR7M-9S is more expensive. However, the improved performance and longevity may offset the initial cost.

2. Requires Professional Installation: While it's not difficult to install a spark plug, it's recommended to have a professional do it to ensure proper gap setting and torque specification.

In conclusion, the NGK LMAR7M-9S 31909-HL4-AJ1 spark plug is a high-quality product that can significantly improve your engine's performance. Its long lifespan and improved combustion can save you money in the long run. However, its higher cost and the need for professional installation are potential drawbacks. If you value engine performance and are willing to invest in a premium spark plug, this product is worth considering. If you're on a tight budget or prefer a more DIY approach, you might want to consider a less expensive option.

Details:

NGK LMAR7M-9S / 31909-HL4-AJ1 Spark Plug New.

part #: lmar7m9s prices

• $26.21-$49.99

specifications cyclesparkplugs:

• brand: Ngk
• mpn: Lmar7m-9s
• type: Spark Plug

shipping cyclesparkplugs:

• type: Fixed
• carrier: USPS
• service: USPS Ground Advantage
• transit: 4-10 Days
• cost: $0.00
• class: Standard

offer cyclesparkplugs:

• best offers: True
• options: Ship-to-home
• started: December 5, 2025
• availability: In Stock
• quantity: 2
• sold: 0

seller cyclesparkplugs:

• # reviews: 2958
• city: Webb City, Missouri
• rating: 100.0%

general cyclesparkplugs:

• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Spark Plugs
• condition: New

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• wallet: Apple-pay
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• other

returns cyclesparkplugs:

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• paid by: Seller

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