Fuel hose for Stihl 021 023 025 MS210 MS230 MS250 11233587703 11233587702 11233587701

This STIHL MS250 fuel hose – a non-original fuel supply hose for STIHL 1123 family chain saws: 021, 023, 025, MS210, MS230 and MS250. It replaces the fuel hose numbers 1123 358 7701, 1123 358 7702 and 1123 358 7703 used in different production periods.

The formed hose delivers fuel from the tank-mounted fuel filter to the carburetor and is adapted to the fuel system layout of this chainsaw family.

STIHL Compatibility Confirmed

Fits:

STIHL 021
STIHL 023
STIHL 025
STIHL MS210
STIHL MS230
STIHL MS250
STIHL MS210 C
STIHL MS230 C
STIHL MS250 C

For C versions the same 1123 fuel hose family applies when the specific model's parts diagram lists the 1123 358 7703 number.

STIHL Fuel Hose Numbers

Original part numbers:

1123 358 7701
11233587701
1123 358 7702
11233587702
1123 358 7703
11233587703

Older parts catalogs for the 021, 023 and 025 list the number 1123 358 7701.

Later versions use 1123 358 7702, while the newer MS210 / MS230 / MS250 parts information uses the number 1123 358 7703.

Therefore, on an old saw, in an earlier catalog and on the current replacement part you may find different variations of the final number.

Fuel System Part Check

This part is the fuel hose between the tank-mounted fuel filter and the carburetor.

This is not a pulse hose and is not the chain lubrication system oil hose.

Before ordering, compare:

the shape of the hose
its entry point into the fuel tank
the connection to the carburetor
the fuel filter side
the original 1123 series number

The fuel filter is a separate part and is not part of the hose itself.

Other STIHL Chainsaw Families

This hose should not be confused with the STIHL 017, 018, MS170 and MS180 fuel hose. These saws belong to the 1130 design family and use a different fuel hose.

Also, MS251 family saws must be checked against their own parts catalog and not assigned to the MS250 just because of a similar model number.

Replacement

Before removing the old hose, empty the fuel tank.

Check the hose at its entry into the tank and at the connection to the carburetor. Cracks, hardened rubber or lost elasticity can cause fuel leakage or additional air entering the fuel system.

Route the new hose the same way as the original. It must not be twisted, overstretched or pinched by the carburetor housing.

Securely attach the fuel filter and carburetor. After adding fresh fuel and before starting the saw, check the entire system for leaks.

You can find more suitable components in the STIHL chainsaw parts category.