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Mercedes water pump pulley A1102050910 M110 W123 280 E W126 280 SE NOS

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Water pump pulley for Mercedes-Benz W123 and W126 with the six-cylinder M110 engine, part number A1102050910.

NOS stock · Fits W123 & W126 with M110 six-cylinder · Original MB label present

Condition of this part

Stock item with NOS character, the original Mercedes-Benz label is present. Further details are shown in the product photos.

Function and location

The coolant pump (water pump) pulley is driven by the crankshaft V-belt, drives the water pump and also carries the fan wheel. It is a two-piece design made of a pressed-steel shell with a single V-belt groove and a deep-drawn hub cap.

It sits on the water pump flange at the front of the engine and is bolted together with the fan wheel.

Compatible vehicles

W123 (M110 / M123):

  • 280, 280 E, 280 CE, 280 TE (M110.923/.924/.984/.987 – up to the respective engine number cutoff, see "not to be confused with" below)
  • 250, 250 T (M123.920/.921)

W126 (M110):

  • 280 S, 280 SE, 280 SEL (1979–1985)

Note on the engine number: for the M110.984, the part number applies per catalog up to engine number 023275 (manual transmission) or 076808 (automatic). Later engines use the version 110 205 07 10 – if in doubt, please provide the engine number and we will check it.

Part number of this pulley: 110 205 09 10 (A1102050910). The different, outwardly similar version 110 205 07 10 (1102050710) belongs to other model series or engines and is not identical (see "not to be confused with" below).

⚠ Important: compare the part number before buying

Do not confuse versions 09 10 and 07 10: for R107/C107 280 SL/SLC, W116 280 S/SE/SEL, the G-model 280 GE as well as later W123/W126 engines, the catalog lists version 110 205 07 10. Please compare the part number or engine number and also check the hub bolt pattern against the product photos.

Does not fit:

  • R107/C107 280 SL, 280 SLC (there 110 205 07 10)
  • W116 280 S, 280 SE, 280 SEL (there 110 205 07 10)
  • G-model 280 GE
  • Four-cylinder and diesel engines (different pulleys)

Does this part fit your car? Send us the VIN (chassis number) and model year – we'll check it for free: 0179 8991069 (Mon–Fri 8 am–6 pm) or via our contact form.

FAQ

What's included in the scope of delivery?

The exact scope of delivery is shown in the product photos.

How does this pulley differ from version 07 10?

This pulley carries the part number 110 205 09 10 and fits W123 and W126 M110 engines up to the stated engine number cutoff. For R107/C107, W116 and later engines, the catalog instead lists version 110 205 07 10 – please compare before buying.

Does the part number apply to every M110 engine?

No. For the M110.984, per catalog it only applies up to engine number 023275 (manual transmission) or 076808 (automatic). For later engines, please let us know the engine number and we will check it.

Related categories: W126, W123

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