STIHL
Stihl SuperCut 40-2 Mower Head
Best automatic trimmer head for efficient lawn and garden maintenance.
The STIHL 4003 710 2140 SUPERCUT II HEAD is a robust 2-line trimmer head designed to replace the 4003 710 2142 model. This durable head is engineered for efficient trimming and brushcutting tasks, ensuring reliable performance. Its construction is built to withstand demanding use, making it a dependable choice for maintaining your outdoor spaces. This part is ordered directly from the factory and typically ships within 3-10 days. This Stihl SuperCut 40-2 mower head is designed for efficient cleaning around obstacles like walls, stairs, and flower beds, as well as for surface work. It features an automatic line adjustment by tapping the head on the ground during operation. The head is compatible with various Stihl brush cutters and uses a 2.4 mm thread thickness for round, square, and pentagonal mowing lines. It's a practical and durable accessory for maintaining your lawn and garden. This STIHL trimmer head is designed for efficient cutting with its 0.095 in. D line. It offers a reliable solution for maintaining your lawn and garden. The product is expertly assembled by Stihl-trained team members and includes an important safety demonstration to ensure safe and proper use. Ace Hardware offers a protection plan for extended coverage beyond the manufacturer's warranty, including parts and labor, power surge protection, and accidental damage coverage on select items. This trimmer head is a durable accessory for your outdoor power equipment needs.
$38.06
Owner Satisfaction
4.5
/ 5
Category Rank
7
/ 45
#7 in Weed Trimmer Accessories
Price vs Category Average
+12%
Above average
Part Number
40037102140
Who it's for
- Professionals needing equipment that survives heavy daily use
- Landscapers tackling thick weeds and overgrown brush
- Busy operators wanting to minimize time spent reloading line
Who should skip it
- Budget-conscious buyers looking for affordable aftermarket alternatives
- Users prone to fatigue during long trimming sessions
- Owners of non-STIHL or incompatible trimmer models
Performance breakdown
Line Feed Efficiency
Automatic tapping mechanism ensures continuous cutting without manual spool intervention.
Build Durability
Rugged construction withstands heavy-duty brushcutting and frequent ground contact.
Obstacle Maneuverability
Compact design excels at trimming tight corners and around delicate landscaping.
Line Versatility
Compatible with multiple line shapes for customized cutting performance.
Installation Ease
Standardized mounting requires basic mechanical knowledge for a secure fit.
Cutting Precision
Consistent 0.095-inch line delivery provides clean edges on varied surfaces.
Key Specs
Part Number
4003 710 2140
Replaces Part Number
4003 710 2142
Number of Lines
2
Product Type
Trimmer Head Assembly
Model
SuperCut 40-2
Thread thickness
2.4 mm
Line type compatibility
round, square, and pentagonal threads
Automatic line adjustment
Features
- Designed for efficient trimming and brushcutting
- Durable construction for demanding use
- Reliable performance for outdoor maintenance
- Ideal for cleaning around obstacles and surface work
- Automatic line adjustment for continuous mowing
- Durable construction from Stihl
- Versatile line compatibility
- Designed for efficient cutting
What customers say
Customers consistently praise the Stihl SuperCut 40 2 Mower Head for its exceptional ease of use, particularly the straightforward line loading process which saves significant time and frustration. Many highlight its robust build and reliable performance, noting that it handles tough cutting conditions effectively. The design is often cited as a major improvement over previous models, contributing to a more efficient and less cumbersome trimming experience. This head is seen as a durable and practical upgrade for Stihl trimmers.
Know before you buy
Yes, the 4003 710 2140 SuperCut II head is the direct replacement for the 4003 710 2142 model and is designed to fit the same Stihl brush cutters.
The head features an automatic feed system that releases more line when you tap the head against the ground during operation, allowing you to continue trimming without stopping to manually adjust the length.
This head is compatible with 2.4 mm (0.095 in.) diameter line. It supports round, square, and pentagonal line shapes, giving you flexibility depending on the type of vegetation you are clearing.
Yes, it is built with durable construction specifically designed for demanding use, making it effective for both general lawn maintenance and tougher brushcutting tasks.
Absolutely. The design is optimized for precision work, allowing you to clean effectively around obstacles such as walls, stairs, and flower beds without damaging them.
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$38