Description
Overview:
The Makita Sprocket Cover Assembly UC4020a/3 (MPN 135249-4) is a genuine Makita replacement side cover for the UC4020A electric chainsaw. Made from hard‐wearing, moulded high‐impact plastic in black, it encloses the drive sprocket area to help retain the guide bar and shield moving parts from knocks, chips, and dust. A precise factory fit supports safe operation and consistent chain alignment, helping the saw run smoothly during cutting. Purpose‐built for the UC4020A, it replaces cracked or damaged covers without modification and uses the existing fixings on the saw. This cover also helps contain chain oil and debris around the drive area, contributing to cleaner, more reliable performance. Built to Makita's standards for compatibility and longevity, it is a practical way to restore proper protection to your chainsaw.
Key Features:
- Genuine Makita part (135249-4) for assured compatibility with the UC4020A
- Robust moulded casing designed to resist impacts and abrasion
- Shields the drive sprocket and bar mount from debris ingress
- Helps maintain correct chain alignment and stable tension
- Direct-fit replacement; installs using existing fixings and basic hand tools
- Supports safe operation by covering moving components
- Accurate moulding ensures the bar seats correctly against the saw body
- Durable construction for regular DIY, trade, and site use
- Restores protection and performance when the original cover is worn or cracked
- Designed specifically for the UC4020A, avoiding the trial and error of non-matching parts
Typical Applications:
Replacement for a damaged or missing side cover on a Makita UC4020A chainsaw. Suitable after impacts, over‐tightening damage, or general wear. Used in home and garden maintenance, facilities upkeep, light construction, and workshop tasks where reliable chain protection and proper bar retention are required for safe, efficient cutting.
Also known as:
Often referred to as a sprocket guard, side cover, bar side plate, drive sprocket cover, chain side casing, or side housing for the chainsaw's drive area.
Fits Models:
UC4020A
Product Specifications
| L&S Part No. | 135249-4 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 135249-4 |
| Unit of Sale | 1 |
| Machine Type | Electric Chainsaws |
| Fits Brands | Makita |
| Key Features | - Genuine Makita part for UC4020A chainsaw - Moulded high-impact plastic resists abrasion - Shields drive sprocket from debris ingress - Direct-fit replacement using existing fixings - Maintains correct chain alignment and tension |



