Description
Product Overview
The NGK Standard 4929 spark plug is engineered with a platinum core and top material to provide superior ignition reliability for ATVs. Measuring 1 x 3.25 x 1 inches and weighing just 1.6 ounces, this lightweight plug fits both front and rear cylinder positions. Its triple‑gasket sealing process ensures a tight, leak‑free seal, while the precise tolerances deliver near‑zero margin for error, making it the plug of choice for millions of vehicles worldwide.
Usage
Designed for ATV enthusiasts, this spark plug excels in off‑road, trail, and racing environments where consistent performance is critical. Whether you’re tackling rugged terrain or cruising on a weekend ride, the NGK 4929 provides dependable spark for smooth acceleration and reliable engine response. 
Why Choose Us
NGNGK is the world’s largest supplier of OEM spark plugs, and the 4929 model reflects that heritage of quality. The plug’s platinum construction resists wear, extending service intervals and reducing maintenance costs. Our triple‑gasket sealing process eliminates combustion gas leaks, enhancing engine efficiency and fuel economy. With a 4.7‑star rating from 145 verified customers, you can trust its proven performance.
Key Features
- Platinum core for extended lifespan and stable spark
- Triple‑gasket seal for leak‑free operation
- Vehicle‑specific fit for front and rear ATV cylinders
- Lightweight design reduces overall engine weight
- OEM‑approved by leading ATV manufacturers
FAQ
Is the NGK 4929 compatible with all ATV models?
The 4929 is designed for specific ATV makes and models that require a platinum spark plug with an RM thread size. Check your vehicle’s service manual or the fit guide on our website to confirm compatibility.
How often should I replace the NGK 4929 spark plug?
Due to its platinum construction, the plug typically lasts 30,000 miles or more under normal riding conditions. However, replace it if you notice misfires, reduced power, or increased fuel consumption.
Can I install the plug myself?
Yes, the NGK 4929 is a vehicle‑specific fit and comes with clear installation instructions. Ensure the engine is cool, use a torque wrench to the manufacturer’s specification, and verify the gap before starting the engine.
What makes the triple‑gasket sealing process important?
The triple‑gasket design creates a robust barrier against combustion gases, preventing leaks that can lead to reduced performance and increased emissions.
Does the plug improve fuel efficiency?
By providing a consistent, high‑energy spark, the NGK 4929 helps the engine burn fuel more completely, which can lead to modest improvements in fuel efficiency.






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