Karvayna 4-Pack F4RTC Spark Plugs for NGK BPR4ES & Kawasaki Engines

Premium direct replacement for NGK BPR4ES engines

The Karvayna 4-pack of F4RTC spark plugs is crafted as a direct NGK BPR4ES replacement, compatible with a broad set of Kawasaki models (including 92070-7004 and 92070-2112) and John Deere equipment (M805853, M802138). This means you can refresh ignition components with a like-for-like option that’s designed for durability and dependable performance.

Broader compatibility and fit

In addition to Kawasaki FR-series engines, these plugs suit a wide array of equipment from John Deere, Husqvarna, Toro, and Cub Cadet lines—covering riding mowers, walk-behind units, and stand-on models. The result is a versatile replacement that helps you maintain a consistent ignition across mixed fleets.

Note: while you may encounter a range of compatible machines, always verify model-specific requirements before purchase to ensure the best match for your engine family and usage scenario.

What makes F4RTC stand out

• Direct NGK BPR4ES replacement for Kawasaki and select John Deere equipment.
• Broad compatibility with FR-series Kawasaki engines and common riding and walking mowers.
• Stable spark and dependable output across varying workloads, backed by rigorous testing.
• Durable construction designed for high temperatures and pressure, with a robust copper core and advanced ceramic for heat management.

Performance and durability

• Enhanced thermal conductivity helps maintain steady ignition and reduces fouling risk under heavy loads.
• More complete fuel burn potential can contribute to smoother idle, quicker throttle response, and improved cold starts, depending on engine and conditions.
• Quality materials, including a nickel alloy, resist wear and maintain reliability over time.

Specifications at a glance

• Hex size: 21 mm
• Thread reach: 19 mm
• Thread diameter: 14 mm
• Gapping: approximately .030 inches
• Heat range: 4

How to use

When replacing, inspect your current plugs and maintain a balanced setup by swapping all relevant plugs at once. Confirm the gap and seating fit before installation, and follow standard safety practices during maintenance. This approach helps you align ignition performance with your engine’s design and operating conditions.