L7TJC Spark Plug for Chainsaw & Brush Cutter – M14 Fit

L7TJC Three-Electrode Spark Plug for Chainsaw & Brush Cutter

Keep your outdoor power equipment running at its best with this L7TJC Spark Plug — a durable, high-quality M14 metal spark plug designed to deliver reliable ignition for a wide range of chainsaws, brush cutters, and lawn mowers. Built with a three-sided (three-electrode) pole design for consistent spark performance and extended service life.

Wide Compatibility

This spark plug is engineered to fit a broad selection of popular engine models, including:

• Engine sizes: 2500, 3800, 4500, 5200, 5800
• Husqvarna: 137/142, 365/372, 268/272
• STIHL: MS170/MS180, MS230/MS250, MS380/MS381, MS660, MS070
• Pole saws & trimmers: PT350/360, TU26
• Brush cutters: 34F, 36F, 40F-5, 44F-5

Always verify your engine model and specification before purchase to ensure proper fitment.

Key Features

• Three-electrode design — promotes reliable, consistent ignition
• M14 thread size — standard fit for common chainsaw and brush cutter engines
• Durable metal construction — built to withstand the demands of outdoor power equipment
• Easy to install — direct replacement, no modifications needed
• Versatile — suitable for chainsaws, brush cutters, trimmers, and lawn mowers

Specifications

• Material: Metal
• Thread Size: M14
• Electrode Type: Three-sided (triple electrode)
• Part Number: L7TJC
• Package Includes: 1 x Spark Plug

Note: Color may appear slightly different depending on your monitor display settings.

For guidance on small engine maintenance and spark plug best practices, visit the U.S. Consumer Product Safety Commission – Lawn Mower Safety.

Learn more: Power Equipment Direct

Frequently Asked Questions

Q: What engines is the L7TJC spark plug compatible with?

A: The L7TJC spark plug is compatible with a wide range of chainsaw and brush cutter engines, including STIHL models MS170/MS180, MS230/MS250, MS380/MS381, MS660, and MS070; Husqvarna 137/142, 365/372, and 268/272; pole saws PT350/360; brush cutters 34F, 36F, 40F-5, and 44F-5; as well as common engine sizes 2500, 3800, 4500, 5200, and 5800. Always cross-check with your equipment's owner manual to confirm compatibility.

Q: What does the M14 thread size mean for a spark plug?

A: M14 refers to the metric thread diameter of the spark plug — 14mm. This is a standard thread size used across many small two-stroke and four-stroke engines found in chainsaws, brush cutters, and lawn mowers. It ensures a secure, leak-free fit in the engine's spark plug port.

Q: How do I know when it's time to replace my chainsaw spark plug?

A: Common signs that your spark plug needs replacing include difficulty starting the engine, rough idling, reduced cutting performance, or increased fuel consumption. As a general rule, spark plugs on outdoor power equipment should be inspected at least once per season and replaced as needed to keep your chainsaw or brush cutter operating efficiently.

Q: How many spark plugs are included in the package?

A: Each package includes 1 x L7TJC spark plug. If you need to service multiple pieces of equipment, simply order the quantity that matches your needs.