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Description
4230 642 4801 STIHL Thrust Plate – Genuine OEM Gear Head Part
The STIHL Thrust Plate (4230 642 4801) is a genuine OEM internal gearbox component designed to support proper gear alignment and load distribution within the gear head and blade drive assemblies of select STIHL hedge trimmers and KombiSystem attachments. This thrust plate plays a critical role inside the gear housing by managing axial forces and ensuring smooth, consistent blade movement during operation.
Over time, thrust plates may wear due to continuous gear load, vibration, insufficient lubrication, or extended professional use. A worn thrust plate can lead to excessive play, improper gear engagement, increased noise, or reduced cutting performance. Replacing it with the correct OEM part helps restore proper gearbox function without replacing the entire drive assembly.
Manufactured to STIHL factory specifications, this genuine thrust plate ensures correct fitment, durability, and long-term reliability under demanding cutting conditions.
Product Details
OEM Part Number: 4230 642 4801
Brand: STIHL (Genuine OEM)
Part Type: Thrust Plate
Application: Gear head / blade drive gear assembly
Condition: New Genuine OEM Part
Function
This STIHL thrust plate is designed to:
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Support proper gear positioning inside the gear head assembly
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Manage axial load and reduce internal gearbox wear
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Maintain smooth blade drive operation
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Replace worn or damaged internal thrust components
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Help preserve long-term gearbox performance
⚠️ A worn thrust plate can cause gear misalignment, excessive play, or premature gearbox wear.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4230 642 4801
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Your unit model matches those listed below
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Application matches your STIHL illustrated parts diagram
⚠️ Gear head thrust components are model-specific — always verify by OEM part number and drive assembly type.
Compatibility
This OEM thrust plate fits many STIHL hedge trimmers and KombiSystem attachments equipped with specific gear head and blade drive configurations, including:
Hedge Trimmers / Kombi Attachments (Gear Head 0°)
HL 45 (Gear head 0°)
HL 45-D (Gear head 0°)
HL 75 (Gear head 0°)
HL 75 K (Gear head 0°)
HL 90 K (Gear head 0°)
HL 100 (Gear head 0°)
HL 100 K (Gear head 0°)
HL 0° (Gear head 0°)
HL-KM (Gear head 0°)
HL-KM 0° (Gear head 0°)
Adjustable Blade Drive Gear Assemblies (135°)
FH 135° (Blade drive gear, adjustable thru 135°)
FH-KM 135° (Blade drive gear, adjustable thru 135°)
HL 135° (Blade drive gear, adjustable thru 135°)
HL-KM 135° (Blade drive gear, adjustable thru 135°)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
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Remove blade assembly and access gear head housing
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Disassemble gearbox carefully on a clean surface
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Replace thrust plate in correct orientation
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Inspect gears, bearings, and lubrication condition
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Reassemble gear head and torque fasteners to specification
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Verify smooth blade movement after installation
⚠️ Gearbox service should be performed by a qualified technician to ensure correct alignment and lubrication.
Maintenance Tips
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Maintain proper gearbox lubrication at recommended intervals
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Inspect gear head for noise, play, or wear
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Replace thrust components during gearbox rebuilds
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Avoid forcing blade movement if binding occurs
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Always use genuine STIHL OEM gearbox parts for correct fit and durability
