Description
The NGK 4578 CR7E is a standard OE-style nickel spark plug engineered for consistent ignition performance in motorcycles and powersports engines. As part of NGK’s trusted “yellow box” line, it delivers dependable starts, smooth engine operation, and long-lasting reliability.
Built with a durable nickel center electrode and a 98% pure copper core, the CR7E ensures efficient heat dissipation and stable combustion. It’s designed specifically for engines that require standard nickel plugs, making it a reliable replacement for many OEM applications.
Key Features
- OE-equivalent nickel center electrode for dependable ignition
- 98% pure copper core for superior heat transfer
- 5k Ohm resistor reduces electrical interference
- Trivalent metal plating for corrosion resistance and anti-seize
- Triple gasket sealing prevents combustion gas leakage
- High-strength ceramic insulator for durability and heat control
- Ideal for motorcycles and powersports applications
Specifications
General
- Part Number: CR7E
- Stock Number: 4578
- Heat Range: 7
- Resistor: Yes (5k Ohm)
- Gap: 0.8 mm
Shell
- Thread Size: M10 x 1.0
- Seat Type: Flat (Gasket)
- Reach: 19.0 mm
- Hex Size: 5/8" (16 mm)
- Terminal: Stud
Electrodes
- Center Electrode: Nickel with copper core
- Ground Electrode: Nickel
- Configuration: J-Gap
- Projection: Non-projected
Fitment Highlights
Aprilia
- Pegaso 650 / Factory / Trail (2006–2007)
Kawasaki
- BN125 Eliminator (2001–2009)
- KL250 Super Sherpa (2010)
- KLX250S (2010)
- VN800 Vulcan 800 series (1995–2006)
Suzuki
- GSF1250 Bandit / ABS (2007–2009, 2016)
- GSX1250FA (2011)
- GW250 / GW250F (2013–2017)
Performance Notes
- Heat range 7 provides balanced performance for a wide range of engines
- Ideal for mid-size motorcycles and dual-sport bikes
- Designed for engines requiring standard nickel plugs, not platinum or iridium
- Reliable for everyday riding, commuting, and light performance use
