×
Description
4180 020 0205 Short Block | Genuine STIHL 43mm Engine FS 131, HT 131, KM 131 & More
The STIHL 4180 020 0205 Short Block is a genuine OEM 43 mm engine short block assembly designed for compatible STIHL professional trimmers, pole pruners, KombiMotor units, brushcutters, earth augers, and related outdoor power equipment.
This factory replacement short block provides the core engine assembly required when repairing an engine with major internal wear or damage, making it a practical alternative to replacing multiple internal engine components individually.
Part Number: 4180 020 0205
Features That Make a Difference
-
Genuine STIHL OEM Short Block
-
Part Number: 4180 020 0205
-
Engine Bore Diameter: 43 mm
-
Complete factory short block assembly
-
Designed for select STIHL professional equipment
-
Fits compatible FS 131 and FS 131 R trimmers
-
Fits select HT 131, HT 132, HT 133, HT 134, and HT 135 pole pruners
-
Fits compatible KM 131 R KombiMotor
-
Fits FS 311 brushcutter applications
-
Fits compatible BT 131 earth auger applications
-
Fits compatible FB 131 equipment
-
Genuine factory replacement for major engine repairs
-
Manufactured to STIHL OEM specifications
-
Helps restore the original engine configuration and performance
Specifications
| Specification | Details |
|---|---|
| Part Number | 4180 020 0205 |
| Product Type | Engine Short Block |
| Brand | STIHL |
| Engine Diameter | 43 mm |
| Part Type | Genuine OEM |
| System | Engine |
| Application | Select STIHL Professional Equipment |
| Replacement Type | Genuine STIHL OEM Short Block Assembly |
Genuine STIHL 43mm Short Block
The 4180 020 0205 STIHL Short Block is a major engine assembly designed to replace the core internal engine components on compatible STIHL equipment.
A short block is commonly used when an engine has experienced significant internal damage or wear that makes replacing individual components less practical.
The factory short block provides the correct core engine configuration for equipment originally designed around STIHL's 43 mm engine platform.
Using a genuine STIHL short block helps maintain:
-
Correct engine dimensions
-
Proper component alignment
-
OEM engine configuration
-
Correct internal component compatibility
-
Dependable professional-equipment performance
Fits STIHL FS 131 Series
The STIHL 4180 020 0205 Short Block is used on select FS-series professional trimmers and brushcutters equipped with the 43 mm engine.
Compatible applications include:
-
STIHL FS 131
-
STIHL FS 131 R
-
STIHL FS 131.0
-
STIHL FS 131.0 R
-
STIHL FS 311
These professional machines are commonly used for demanding trimming, clearing, and vegetation-management applications.
Fits STIHL HT Pole Pruners
The 4180 020 0205 short block is also used on select STIHL professional pole-pruner applications.
Compatible 43 mm applications include:
-
STIHL HT 131
-
STIHL HT 132
-
STIHL HT 133
-
STIHL HT 134
-
STIHL HT 135
Because STIHL has produced multiple versions and production revisions of these machines, always verify the equipment model, serial number, and illustrated parts diagram before ordering.
Fits STIHL KM 131 R
The STIHL KM 131 R KombiMotor also uses the 4180 020 0205 short block on applicable 43 mm engine configurations.
The KM 131 R is part of STIHL's professional KombiSystem and can operate multiple attachments from a single powerhead.
Replacing a damaged engine short block can restore the core engine assembly while allowing compatible external components to be transferred or replaced as required during the repair.
Additional Compatible STIHL Applications
The 4180 020 0205 is also used on select:
-
STIHL BT 131
-
STIHL FB 131
-
STIHL FS 311
-
Other applicable STIHL equipment using the same 43 mm engine short block
Complete Fitment Reference
Known applications for STIHL 4180 020 0205 include:
-
FS 131
-
FS 131 R
-
FS 131.0
-
FS 131.0 R
-
FS 311
-
HT 131
-
HT 132
-
HT 133
-
HT 134
-
HT 135
-
KM 131 R
-
BT 131
-
FB 131
Engine Diameter: 43 mm
Because engine components can vary depending on production date and serial number, verify your exact model, serial number, and STIHL parts diagram before ordering.
Ideal for Major Engine Repair
The 4180 020 0205 short block may be appropriate when the original engine has experienced problems such as:
-
Cylinder damage
-
Piston damage
-
Excessive internal wear
-
Crankshaft damage
-
Low compression caused by internal engine wear
-
Major internal mechanical failure
-
Damage requiring extensive engine rebuilding
Proper diagnosis should always be performed before replacing the short block because similar operating symptoms can also result from fuel, ignition, carburetor, valve-adjustment, or other external engine problems.
Short Block vs. Complete Engine
The 4180 020 0205 is a short block assembly, not necessarily a complete ready-to-run engine.
Depending on the equipment application, external components may need to be transferred from the original engine or purchased separately.
These components can include items associated with:
-
Ignition system
-
Carburetor / fuel system
-
Air intake system
-
Muffler / exhaust system
-
Starter assembly
-
Clutch
-
Covers and housings
-
Model-specific controls and attachments
Always review the STIHL illustrated parts diagram and compare the supplied assembly with your original engine before beginning installation.
Installation & Service
Replacement of an engine short block is a major mechanical repair and should be performed by an experienced technician.
Before installation:
-
Verify the equipment model and serial number.
-
Confirm the original engine uses the 43 mm short block.
-
Disconnect the spark plug and drain fuel as required.
-
Remove the engine and related external components according to STIHL service procedures.
-
Inspect reusable components before transferring them to the replacement short block.
-
Replace damaged gaskets, seals, hoses, or related components as necessary.
-
Install the STIHL 4180 020 0205 Short Block according to factory procedures.
-
Verify all fuel, ignition, intake, and exhaust connections.
-
Perform all required engine adjustments.
-
Test the equipment for proper operation before returning it to service.
Engine short-block replacement requires proper mechanical knowledge, tools, torque specifications, and service procedures. Always follow the applicable STIHL service manual.
Important Product Information
Part Number: 4180 020 0205
Product: Engine Short Block
Brand: STIHL
Engine Diameter: 43 mm
Product Type: Genuine OEM Engine Assembly
Application: Select STIHL FS, HT, KM, BT, FB & FS 311 Equipment
Fits: FS 131, FS 131 R, FS 131.0, FS 131.0 R, FS 311, HT 131, HT 132, HT 133, HT 134, HT 135, KM 131 R, BT 131, FB 131
The Genuine STIHL 4180 020 0205 43mm Short Block provides the factory engine core required for major repairs on compatible STIHL professional outdoor power equipment.
Why Buy from Barry’s Power Equipment?
Barry’s Power Equipment provides genuine OEM and quality replacement parts for professional lawn, landscape, and outdoor power equipment.
-
Genuine STIHL OEM parts
-
STIHL professional equipment parts
-
Engine and short-block assemblies
-
Commercial outdoor power equipment parts
-
Competitive Pricing
-
Expert Customer Support
Restore the core engine assembly of your compatible STIHL equipment with the Genuine STIHL 4180 020 0205 43mm Engine Short Block.
SEO Keywords: 4180 020 0205, STIHL 4180 020 0205, 41800200205, STIHL 41800200205, STIHL short block, STIHL 43mm short block, STIHL engine short block, STIHL FS131 engine, STIHL FS 131 short block, FS131 short block, FS 131 R short block, FS131R engine, FS 311 engine, FS311 short block, STIHL HT131 engine, HT 131 short block, STIHL HT132 engine, STIHL HT133 engine, STIHL HT134 engine, STIHL HT135 engine, HT 132 short block, HT 133 short block, HT 134 short block, HT 135 short block, STIHL KM131R engine, KM 131 R short block, STIHL BT131 engine, BT 131 short block, STIHL FB131 engine, FB 131 short block, STIHL 43mm engine, genuine STIHL engine parts, STIHL OEM engine parts, STIHL replacement engine, STIHL professional equipment parts, STIHL trimmer engine, STIHL pole saw engine, STIHL KombiMotor engine, outdoor power equipment parts, Barry’s Power Equipment






