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Experience dependable ignition and OE-quality performance with the NGK 4122 Nickel Spark Plug, engineered for a wide range of small engines, motorcycles, watercraft, and lawn equipment. Built with a durable nickel alloy, this spark plug delivers consistent firing and long-lasting reliability—ideal for replacing factory plugs in models such as the Honda EZ90 Cub, Aprilia Rally 50, Yamaha, and other compatible engines.
The plug’s high-purity alumina silicate ceramic insulator enhances dielectric strength, reducing misfires and improving combustion efficiency. Triple gasket sealing technology ensures a tight fit, preventing combustion gas leaks and maintaining stable engine pressure for optimal performance. A solid copper core provides excellent heat dissipation and conductivity, while trivalent metal plating protects against corrosion and seizing—allowing for easy installation and removal even after extended use.
Designed to meet or exceed OE specifications, the NGK 4122 offers reliable ignition performance under varying operating conditions, making it a trusted choice for both everyday maintenance and small-engine restoration projects.
Features:
OE-quality nickel alloy construction for lasting durability and reliable ignition
High-grade alumina silicate ceramic insulator enhances dielectric performance
Triple gasket sealing prevents combustion gas leakage for consistent pressure
Solid copper core improves heat dissipation and thermal conductivity
Trivalent metal plating resists corrosion and provides anti-seize protection
Fitment:
1976 Yamaha GS340 Base
1977 Yamaha GS340 Base
1991 Honda Ez90 Cub Base
1992 Honda Ez90 Cub Base
1992 Yamaha CY50 Jog Base
1993 Aprilia Scarabeo 50 2T Base
1993 Honda Ez90 Cub Base
1993 Yamaha CY50 Jog Base
1994 Aprilia Scarabeo 50 2T Base
1994 Honda Ez90 Cub Base
1994 Yamaha CY50 Jog Base
1995 Aprilia Rally 50 (Air Cooled) Base
1995 Aprilia Scarabeo 50 2T Base
1995 Honda Ez90 Cub Base
1995 Yamaha CY50 Jog Base
1996 Aprilia Rally 50 (Air Cooled) Base
1996 Aprilia Scarabeo 50 2T Base
1996 Honda Ez90 Cub Base
1996 Yamaha CY50 Jog Base
1997 Aprilia Rally 50 (Air Cooled) Base
1997 Aprilia Scarabeo 50 2T Base
1997 Yamaha CY50 Jog Base
1998 Aprilia Rally 50 (Air Cooled) Base
1998 Aprilia Scarabeo 50 2T Base
1998 Yamaha CY50 Jog Base
1999 Aprilia Rally 50 (Air Cooled) Base
1999 Aprilia Scarabeo 50 2T Base
1999 Husqvarna CR50 Base
1999 Yamaha CY50 Jog Base
2000 Aprilia Rally 50 (Air Cooled) Base
2000 Aprilia Scarabeo 50 2T Base
2000 Husqvarna CR50 Base
2000 Yamaha CY50 Jog Base
2001 Aprilia Rally 50 (Air Cooled) Base
2001 Aprilia Scarabeo 50 2T Base
2001 Aprilia Scarabeo 50 Ditech Base
2001 Husqvarna CR50 Base
2001 Yamaha CY50 Jog Base
2002 Aprilia Rally 50 (Air Cooled) Base
2002 Aprilia Scarabeo 50 2T Base
2002 Aprilia Scarabeo 50 4T Base
2002 Aprilia Scarabeo 50 Ditech Base
2002 Aprilia SR 50 Ditech Base
2002 Husqvarna CR50 Base
2003 Aprilia Rally 50 (Air Cooled) Base
2003 Aprilia Scarabeo 50 2T Base
2003 Aprilia Scarabeo 50 4T Base
2003 Aprilia Scarabeo 50 Ditech Base
2003 Aprilia SR 50 Ditech Base
2004 Aprilia Scarabeo 50 2T Base
2004 Aprilia Scarabeo 50 4T Base
2004 Aprilia Scarabeo 50 Ditech Base
2005 Aprilia Scarabeo 50 2T Base
2005 Aprilia Scarabeo 50 4T Base
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
