NGK STR12 Set Standard Spark Plugs Engine 400CC

( Brand: Ngk ), ( Manufacturer Part Number: STR12 ), ( Part Type: Spark Plug Engine ), ( Country Of Manufacture: Japan ), ( Compatible Year: 1999-1998 ), ( Kitincludes: 4 Standard Spark Plugs ), ( Vendor: Lionparts Powersports ), ( Image Note: Image Is For Reference Only, Actual Product May Vary Slightly. ), ( Ships From: Usa ), ( Handling Time: Approximately 1 Business Day ), ( Oem Or Performance: Performance/aftermarket )

Review NGK Set Standard Spark Plugs Yamaha Engine 400cc fits YZ400F 1998–1999

NGK STR12 Set Standard Spark Plugs for Yamaha YZ400F (1999-1998) Engine

Experience unparalleled performance and reliability with the NGK STR12 Set Standard Spark Plugs, specifically designed for the Yamaha YZ400F engines from 1999 to 1998. These spark plugs are engineered to deliver a consistent spark for optimal combustion, ensuring your motorcycle performs at its peak.

The NGK STR12 Set is a comprehensive solution for your Yamaha YZ400F, offering two high-quality, long-lasting spark plugs. Each spark plug features a tungsten center electrode, ensuring a strong, reliable spark under all operating conditions. The ground electrode is made of pure alumina silicate, providing excellent insulating characteristics and durability.

These spark plugs are precision-made to meet the exacting standards of the Yamaha YZ400F engine. The heat range of the NGK STR12 is carefully controlled to provide the ideal balance between combustion efficiency and heat resistance. This ensures that your engine runs cooler and more efficiently, extending the lifespan of the spark plug and the overall health of your motorcycle.

Installing the NGK STR12 Set Standard Spark Plugs is a straightforward process, thanks to their OEM-style copper core and anti-seize coating. The copper core ensures a secure fit, while the anti-seize coating prevents corrosion and makes removal easier when it's time for your next service.

Upgrade your Yamaha YZ400F with the NGK STR12 Set Standard Spark Plugs. With these spark plugs, you'll enjoy enhanced performance, increased reliability, and extended engine life, all while maintaining the original feel and character of your Yamaha YZ400F. Invest in superior quality and experience the difference today.

1. High-Quality Material: NGK is a renowned brand known for producing high-quality and durable spark plugs. Their products are designed to withstand harsh conditions and provide consistent performance.

2. Improved Performance: These spark plugs can help improve the engine's performance by promoting quicker ignition and better combustion. This can lead to increased power and efficiency.

3. Longer Life Span: Compared to standard spark plugs, these NGK plugs are designed to last longer, reducing the frequency of replacements.

4. Easy Installation: Spark plugs are relatively easy to replace, making it a straightforward DIY task for many motorcycle owners.

1. Higher Price: NGK spark plugs are generally more expensive than standard or economy options. However, the increased cost may be justified by their longevity and performance benefits.

2. Potential Fitment Issues: While NGK is a reliable brand, there's always a chance that the spark plug may not fit perfectly. Always ensure the part number matches your specific motorcycle model and year.

3. No Immediate Performance Boost: Although these spark plugs can contribute to improved performance over time, they may not provide an immediate boost in power. This can be disappointing for some users who expect an immediate improvement.

In conclusion, the NGK STL12 Series Spark Plugs for Yamaha YZ400F (1999-1998) can be a worthwhile investment due to their high-quality material, potential for improved performance, and longer lifespan. However, they are more expensive than standard options, and there may be fitment issues or no immediate performance boost. If you're willing to pay a premium for better performance and longevity, these spark plugs could be a good choice. If not, you might consider more affordable options. Always ensure to verify the part number and fit before making a purchase.

Details:

Consistent performance. Triple-gasket sealing process. Plug of choice in millions vehicles. Kit includes 4 Standard NGK Spark Plugs.

4 Standard Spark plugs. Note: Image is for reference only, actual product may vary slightly depending on your vehicle. Plug Gap: 0.031. Fits Yamaha YZ400F 1999 1998 Engine 400.

part #: str12 prices

• $25.52-$55.92

specifications cyclesparkplugs:

• for models: Yz400f
• for makes: Yamaha
• for years: 1998-1999
• brand: Ngk
• mpn: Str12
• part type: Spark Plug Engine
• country of manufacture: Japan
• compatible year: 1999-1998
• kitincludes: 4 Standard Spark Plugs
• vendor: Lionparts Powersports
• image note: Image Is For Reference Only, Actual Product May Vary Slightly.
• ships from: Usa
• handling time: Approximately 1 Business Day
• oem or performance: Performance/aftermarket

shipping cyclesparkplugs:

• type: Fixed
• cost: $0.00
• class: Standard
• service: FedEx Ground or FedEx Home Delivery
• transit: 2-6 Days
• carrier: FedEx

offer cyclesparkplugs:

• sold: 0
• availability: In Stock
• started: July 8, 2025
• quantity: 5
• options: Ship-to-home

general cyclesparkplugs:

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

seller cyclesparkplugs:

• city: Wilmington,
• rating: 99.1%
• # reviews: 220047

returns cyclesparkplugs:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

payments cyclesparkplugs:

• credit card: Mastercard
• other
• wallet: Paypal

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