GEAR BOX FOR STIHL FS44 FS65 FS72 FS74 FS75 FS76 FS80 4137 640 0100

Gear Box for STIHL

This gear box is a direct replacement for STIHL FS series trimmers, transmitting engine power to the cutting head for reliable operation. OEM cross-reference number 4137 640 0100 ensures compatibility with multiple models.

Overview

This gear box for STIHL FS44, FS65, FS72, FS74, FS75, FS76, and FS80 trimmers is designed to transfer torque from the driveshaft to the cutting attachment. It is a critical component for maintaining efficient cutting performance. The gear box is built to withstand the demands of professional landscaping.

Built For Performance

• Precision-machined gears for smooth power transfer
• Durable aluminum housing resists impacts and corrosion
• Sealed bearings reduce maintenance and extend service life
• Direct fit design eliminates need for modifications
• Heat-treated internal components for long-lasting durability

Fits These Machines

• for STIHL FS44
• for STIHL FS65
• for STIHL FS72
• for STIHL FS74
• for STIHL FS75
• for STIHL FS76
• for STIHL FS80

On-The-Job Use

• Trimming grass and weeds around lawns and gardens
• Cutting thick brush and overgrowth on commercial properties
• Maintaining fence lines, roadsides, and trails
• Landscape maintenance for residential and municipal areas

Specs At A Glance

Good To Know

Q: Is this gear box compatible with my STIHL FS75? A: Yes, this gear box is designed to fit STIHL FS75, as well as other FS models listed. Always verify your machine's serial number for exact compatibility.

Q: Does this gear box come pre-lubricated? A: The gear box is shipped with factory-applied grease; however, it is recommended to check and add grease according to your owner's manual before first use.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.