The Turbo-to-Auxiliary-Pump Coolant Return Hose Section B on the BMW 2/3/4/5/6/7 Series & X3/X4 (2016–2021) moves coolant along the listed section of the cooling circuit. Listed applications include the M40i. BMW has built vehicles in Munich since 1916, and each Original BMW Part carries its own BMW part number.
Technical Details
- Part: Turbo-to-Auxiliary-Pump Coolant Return Hose Section B
- Function: Routes engine coolant between the named cooling-system components.
- BMW part number: 11-53-8-666-857
- Fitment years: 2016–2021
- Applications: BMW 2/3/4/5/6/7 Series & X3/X4
- Listed submodels: M40i
Fitment & Compatibility
Check the table below for the exact year, model, submodel, and any listed notes.
Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2016–2018 | BMW | 340i | ||
| 2017–2019 | BMW | 340i GT xDrive | ||
| 2016–2018 | BMW | 340i xDrive | ||
| 2017–2020 | BMW | 440i | ||
| 2017–2020 | BMW | 440i Gran Coupe | ||
| 2017–2020 | BMW | 440i xDrive | ||
| 2017–2020 | BMW | 440i xDrive Gran Coupe | ||
| 2017–2019 | BMW | 540i | ||
| 2017–2019 | BMW | 540i xDrive | ||
| 2018–2019 | BMW | 640i xDrive Gran Turismo | ||
| 2016–2019 | BMW | 740i | ||
| 2017–2019 | BMW | 740i xDrive | ||
| 2017–2021 | BMW | M240i | ||
| 2017–2021 | BMW | M240i xDrive | ||
| 2018–2019 | BMW | X3 | M40i | |
| 2019 | BMW | X4 | M40i |