4000 LB05EZ Resistor Sparkplug Cap for Arctic Cat Jag 440 1981-1999

Resistor Sparkplug Cap for Arctic Cat Jag 440

This resistor sparkplug cap (LB05EZ, 4000) fits Arctic Cat Jag 440 machines from 1981 to 1999, providing a dependable, noise-suppressed connection between the ignition wire and spark plug.

Overview

This resistor sparkplug cap is a replacement ignition part for Arctic Cat Jag 440 snowmobiles built between 1981 and 1999. The LB05EZ design suppresses electrical interference while gripping the spark plug terminal firmly against vibration and cold-weather use. It is suited to riders and mechanics performing routine tune-ups or chasing down spark issues.

Built For Performance

• Resistor construction suppresses ignition noise in the electrical system
• Firm push-on grip stays seated through vibration and rough terrain
• Heat, oil, and moisture resistant housing built for engine bay conditions
• Cross-references the 4000 and LB05EZ part numbers
• Straightforward replacement on the existing plug wire

Fits These Machines

• for Arctic Cat Jag 440 (1981-1999)

On-The-Job Use

• Scheduled ignition maintenance and tune-ups
• Fixing hard starts or misfires caused by a worn cap
• Cold-weather riding prep for snowmobiles
• Workshop and trailside repairs

Specs At A Glance

Good To Know

Q: What causes a sparkplug cap to fail? A: Heat cycling, vibration, and moisture can crack the housing or corrode the internal terminal, weakening the spark. Replacing the cap restores a solid connection to the plug.

Q: Will this cap fit my Jag 440 if it has an aftermarket ignition wire? A: It installs on standard spark plug wire ends, but wire diameter and terminal style can vary. Check the wire and plug terminal before ordering to confirm a proper fit.

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