LB05EZ Resistor Sparkplug Cap for Ski-Doo Formula Plus 1985-1993 II X XTC

Resistor Sparkplug Cap for Ski-Doo Formula Plus

This resistor sparkplug cap is a replacement ignition component for Ski-Doo Formula Plus snowmobiles spanning 1985-1993, cross-referencing LB05EZ, II, X, and XTC applications.

Overview

This resistor sparkplug cap is a replacement ignition component for Ski-Doo Formula Plus snowmobiles spanning 1985-1993. It connects the spark plug to the ignition lead while suppressing radio frequency interference from the ignition system. This resistor sparkplug cap suits riders maintaining or restoring a Formula Plus, II, X, or XTC.

Built For Performance

• Resistor core suppresses RFI and electrical noise from the ignition system
• Cross-references LB05EZ for simplified part matching
• Fits multiple Formula Plus model designations, including II, X, and XTC
• Durable housing resists heat, vibration, and engine bay exposure
• Snug terminal connection helps maintain consistent spark delivery

Fits These Machines

• for Ski-Doo Formula Plus, 1985-1993
• for Ski-Doo Formula Plus II
• for Ski-Doo Formula Plus X
• for Ski-Doo Formula Plus XTC

On-The-Job Use

• Routine ignition tune-ups on older Ski-Doo snowmobiles
• Replacing a cracked, corroded, or worn sparkplug cap
• Restoring reliable spark on vintage Formula Plus machines
• Trailside troubleshooting of ignition misfires and rough running

Specs At A Glance

Good To Know

Q: What does the resistor in this cap do? A: The resistor suppresses ignition noise that can interfere with radio or electronic equipment while still delivering spark to the plug. It is standard on many snowmobile ignition systems of this era.

Q: How do I know this cap fits my machine? A: Match the LB05EZ number and the Formula Plus, II, X, or XTC model designation to your sled before ordering. Serial number differences can affect fit, so verify against your parts diagram.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.