DEF ignition coil for Stihl MS311 — front view, supports reliable starting
DEF ignition coil for Stihl MS391 — side view, promotes steady spark
DEF ignition coil for Stihl MS311Z — front connector, ensures consistent timing
DEF ignition coil for Stihl MS391Z — top-angle view, supports dependable ignition
DEF ignition coil label closeup — clear markings for correct replacement
DEF ignition coil packaging — authentic replacement part ready for install
DEF ignition coil installation tools — simplifies DIY installation

DEF

DEF Ignition Coil for Stihl MS311/MS391/MS311Z/MS391Z — Replaces OEM 1140-400-1303 / 1140-1305-B

High-performance patio lawn and garden made for confident daily results

$24.91

3 shoppers currently have this item in cart.

Low stock: only 5 left in inventory. Add to cart before it's gone.

Shop Pay installment options may appear at checkout where eligible.

Free shipping Secure checkout 100% refund eligible
Bundle & save Buy 2 and save checkout time

Premium patio lawn and garden quality selected for United States (USA) customers.

Routine pack Build your routine pack (3)

Fast dispatch with always-free shipping and secure checkout on every order.

Free shipping

i

Free shipping on every order. Fast dispatch, tracked delivery, and secure checkout included.

Easy returns

i

Simple return flow and responsive support for eligible items.

Peak-demand shipping delays

i

During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

24/7 customer support

Questions before checkout? Our team is available and ready to help.

Return & RefundEasy returns and policy details Shipping PolicyDelivery process and tracking info
Share

Why customers choose Cera Garden

Compatibility and direct replacement

The DEF ignition coil is a practical replacement designed for Stihl chainsaws in the MS311, MS391, MS311Z, and MS391Z families. It is intended to align with the engine’s ignition system and replaces the OEM parts 1140-400-1303 and 1140-1305-B, making it a straightforward option for maintenance or part upgrades.

  • Fits: For Stihl MS311 MS391 MS311Z MS391Z Chainsaw
  • Replaces: OEM 1140-400-1303 and 1140-1305-B

Real-world use and possible benefits

In everyday task scenarios—whether pruning, firewood prep, or yard maintenance—this coil may help deliver a reliable spark path and maintain steady timing when installed correctly. While results can vary with overall saw condition, the coil is designed to support consistent starter performance and dependable engine operation during demanding work cycles.

  • Potential for reliable spark during start-up and operation
  • Potential for steady timing under load for smoother operation
  • Designed for straightforward replacement with common hand tools

Quality, compatibility, and installation tips

As a replacement component, the DEF coil is intended to slot into your Stihl saw with minimal modification, preserving the engine’s timing alignment when installed following standard safety practices. Before purchase, please verify model compatibility and OEM references to ensure a proper match.

Helpful installation considerations: use basic hand tools, disconnect the saw’s ignition battery or spark source as recommended by the manufacturer, and re-check the plug-to-coil connections after installation. Regular inspection of connections and a clean mounting surface can support reliable performance over time.

Note: This description emphasizes compatibility and practical use cases for routine maintenance. Actual results depend on correct installation and the overall condition of the chainsaw.

FAQ

Q: What Stihl models is this DEF ignition coil compatible with?

A: Fits Stihl MS311, MS391, MS311Z, MS391Z; replaces OEM 1140-400-1303 and 1140-1305-B.

Q: How might this ignition coil affect starting and ignition?

A: If installed correctly, it may support a reliable spark and steady timing for smoother starts and consistent operation.

You may also like