JDLLONG Ignition Coil replacement for Stihl FS91 FS131 HT133 KM91R – 4180 400 1313 direct-fit, durable spark performance

JDLLONG 4180 400 1313 is a direct-fit replacement ignition coil designed to restore spark performance for many Stihl FS, HT, KM and related models.

This high-quality replacement ignition coil is built to the specification needed for reliable starting and consistent engine running on compatible Stihl handheld tools. It replaces OEM part numbers such as 4180 400 1313 and 4180 1312 and fits a long list of trimmers, brushcutters, hedge trimmers and blowers. The unit arrives brand new and is manufactured for durability and consistent electrical output so you can get your outdoor equipment back in service quickly.

Which Stihl models does this ignition coil fit?

This coil is compatible with numerous Stihl models across the FS, KM, HT, BT, FR and FC lines. It covers common consumer and professional units, including multiple R and Z variants used in different regional assemblies.

• Fits FS89, FS91, FS111, FS131 and corresponding R variants.
• Compatible with KM91R, KM111R, KM131, KM131R and some KM R-Z versions.
• Works on HT101, HT102, HT103, HT130–HT135 hedge trimmers (including Z variants).
• Also fits BT131, FR131T, FC91, FC96, FC111 and related tools.

How does this replacement coil improve tool performance?

Replacing a worn or damaged ignition coil restores reliable spark timing and stronger ignition energy, which stabilizes idling, improves starting and reduces misfires. The JDLLONG unit is manufactured to meet professional dimensions and insulation standards for consistent output under load.

• Delivers stable spark to reduce stalling and hard starts.
• Manufactured with improved insulation for longer service life.
• Same mounting points and lead configuration for straightforward swap.
• Engineered to maintain electrical output across temperature ranges.

What should I check before installing this coil?

Confirm the OEM part number and visually match mounting holes, plug lead length and connector orientation to your original coil. Also inspect the flywheel, ignition lead, boot and switch components to rule out other causes of ignition problems before replacing the coil.

• Verify compatibility with your tool’s model and part number.
• Compare mounting pattern and wire/boot length to the original coil.
• Test spark with a known-good plug and check flywheel gap if possible.
• Replace or clean related electrical parts for best results.

How easy is installation for a home mechanic?

Installation is typically straightforward for users comfortable with small-engine maintenance. Basic hand tools are all that’s required; removing the shroud and disconnecting the old coil takes most of the work, and the JDLLONG replacement follows the same bolt pattern and lead routing as OEM units.

• Requires common tools: screwdriver, socket set, feeler gauge for flywheel gap.
• Mounting holes and lead position match OEM orientation for direct swap.
• Simple lead and boot reconnection—no soldering needed.
• Refer to your model’s service manual for torque and gap specs.

Who is this for: This JDLLONG ignition coil is aimed at homeowners, landscapers and small-engine repair shops who need a dependable, cost-effective replacement for Stihl handheld equipment. It’s suitable for anyone wanting to restore starting reliability and running stability on compatible trimmers, hedge trimmers, brushcutters and blowers without sourcing expensive OEM parts.