Air Filter & Spark Plug Tune Up Kit Compatible With Stihl HS45 HL45 KM55 FC55
Give Your STIHL the Professional Edge
Your machinery is an investment—keep it performing as well as the day you bought it. The HardRidge™ Spares Service Kit is the ultimate "tune-up in a box," specifically curated for owners who demand peak power and zero downtime.
Why this kit makes a difference:
Breathe New Life into Your Engine: Our high-flow HardRidge air filters prevent dust and debris from stealing your horsepower.
The Gold Standard in Ignition: We don’t settle for "generic." Every kit includes a Genuine NGK Spark Plug for reliable first-pull starts every single time.
Maintenance Made Simple: No hunting for individual parts. Everything you need for a professional-grade service is right here, ready for a 5-minute swap.
Support UK Small Business: Dispatched fast from our UK warehouse so you can get back to the job sooner.
Precision Fitment
Compatible with the following STIHL models:
- Strimmers & Brushcutters: FC55, FS38, FS45, FS46, FS55 (including all C, R).
- Hedge Trimmers: HS45 & HL45.
- Kombi Engines: KM55.
Replaces OEM Part Numbers: 4140 124 2800 & 4228 124 1500.
⚠️ Pro-Tip Before You Buy
To ensure a perfect match, please check your current spark plug. This kit is not compatible with 2-MIX machines using the smaller CMR6H plug.
FAQ
Frequently Asked Questions
Questions we get asked by our customers. If you need more help please get in touch via our chat.
We aim to dispatch all orders within 1 business day. Orders placed before 2pm are usually shipped the same day.
We ship 99% of our orders via Royal Mail. If you select the free shipping option, you will typically receive your parts within 4 working days.
We stock both genuine parts and premium aftermarket alternatives under our own brand, HardRidge Parts, designed for durability and performance.
Each product page includes compatibility information. If you’re unsure, just contact us with your model number—we’re happy to help.
Look for a sticker on the lawnmower deck—it will show the model year and often an ART number. We can identify your machine using that information.
We offer a 30-day return policy. Parts must be unused and in their original condition. Please see our Returns Policy page for full details.
At the moment, we only ship within the UK.
Orders under £30 are sent via Royal Mail 2D tracking, which provides delivery confirmation but not live updates. Orders over £30 are sent with a fully tracked service via Royal Mail or Evri.
You can email us atsales@outdoorspares.comor use the contact form on our Contact Us page. We typically respond within 24 hours on business days. We also offer live chat and usually reply straight away, though during busy periods it may take a little longer.