STIHL Angle Drive Cam - 4243 640 1600

Product Details & Features

The STIHL Angle Drive Cam – 4243 640 1600 is a genuine OEM replacement component engineered for select STIHL straight-shaft and curved-shaft trimmers, brushcutters and other handheld professional outdoor power tools. This precision-formed cam component is part of the angle drive assembly, helping convert power from the drive shaft into the proper rotational motion at the cutting head — delivering smooth, dependable performance and optimal cutting efficiency.

Manufactured to STIHL’s original equipment specifications, the 4243 640 1600 angle drive cam features high-strength materials and exact machining tolerances that meet the rigours of professional and homeowner use. Its precise fit and durable construction ensure accurate engagement with surrounding gears and linkages, minimising wear and maintaining smooth rotational motion compared with non-OEM or generic alternatives.

Key Features

• Genuine STIHL OEM Component – Built to exact STIHL original equipment standards for accurate fitment, reliable performance and long service life.

• Precision Engineered – Machined to exact tolerances to ensure correct engagement within the angle drive gear assembly.

• Durable Construction – Manufactured from high-quality metal alloys for extended wear resistance under heavy loads and frequent use.

• Critical Motion Component – Plays a key role in translating drive shaft rotation into effective cutter head motion.

• Part Reference: 4243 640 1600 – Confirms correct OEM STIHL angle drive cam identification.

Suitable Machines / Compatible Equipment

The STIHL 4243 640 1600 Angle Drive Cam is designed for use in select STIHL trimmers and brushcutters with gear-driven angle head assemblies. Compatible platforms typically include:

• STIHL straight-shaft and curved-shaft trimmers

• Professional and homeowner brushcutters with gear angle drive

• Models where this specific cam profile is required for correct gear engagement

(Exact fitment depends on model number, drive shaft type and angle head configuration — always consult your official STIHL parts manual to confirm correct application.)

Typical Compatible Applications

This angle drive cam is commonly used in systems that:

• Translate rotational motion from the drive shaft to the cutting head

• Maintain precise gear alignment and motion transfer under load

• Support efficient cutting performance on grass, brush and weeds

Parts This Component Replaces / Supersedes

The 4243 640 1600 angle drive cam is the direct OEM replacement for the original cam used in the specified STIHL angle drive assemblies. In official parts catalogues, alternative references or edition variations may include:

• 4243-640-1600 (alternate hyphen notation)

• Equivalent STIHL OEM cam references used in specific model ranges

(Note: component references are assembly-specific; always verify with your model’s parts diagram.)

Fitment Tip

Angle drive components like the 4243 640 1600 cam must match the exact gear geometry, shaft diameter and mounting configuration of your STIHL trimmer or brushcutter. Before ordering, locate your equipment’s model and serial number and reference the STIHL parts diagram or service manual to ensure this cam matches your angle head assembly. Correct selection helps maintain smooth motion, reduced vibration and longer gear life.

Product Details

Product Type: Angle Drive Cam
Part Reference: 4243 640 1600
Location: Angle drive gear assembly (cutting head)
Material: High-strength metal alloy
Function: Transfers rotational motion from drive shaft to cutting head gears

Why Choose This Angle Drive Cam

The genuine STIHL 4243 640 1600 Angle Drive Cam is the dependable OEM choice when replacing a worn, chipped or failed cam in compatible STIHL trimmers and brushcutters. Its precise construction and rugged materials ensure correct engagement, smooth motion and long-lasting performance — helping preserve gear train integrity and reduce downtime compared with non-OEM parts.