Original BMW Thermostat to Coolant Pump Hose, BMW 330i, 530i, X3, X4, Z4, and 230i xDrive (2017–2025)

BMW names this part the hose from the thermostat to the coolant pump, and this Original BMW hose carries coolant between those two components on B46 and B48 four-cylinder engines in the G-series 330i, 530i, X3, X4, Z4, and 230i xDrive. Production of this number began in July 2018, and it covers both the B46 and B48 engines. It is made in Germany. Like any coolant hose, it handles hot, pressurized coolant through repeated heat cycles. With age it can become dry, hard, or brittle, or it can start to leak.

Original BMW Parts carry a 24-month parts warranty.

BMW's data shows this one hose shared across a wide spread of chassis: G20 and G21 3 Series, G30 and G31 5 Series, G01 X3 including the 30e plug-in hybrid with the B48X and B46X, G02 X4, and G29 Z4. When you replace it, flush the system and refill with fresh coolant to clear out any sludge that has built up.

Technical Details

• Manufacturer: BMW (Original BMW Parts)
• Part number: 11-53-8-650-981
• BMW name: Hose, thermostat to coolant pump
• Production start: July 2018
• Engines: B46 and B48 four-cylinder, including B48X hybrid
• Country of manufacture: Germany
• Sold individually, one hose per order
• Warranty: 24 months

Common Questions

What are the signs this hose needs replacing?
Cracking, leaking, swelling, or general deterioration of the rubber.

Does the X3 xDrive30e plug-in hybrid use the same hose?
Yes. BMW specifies this hose for the X3 30e with both B48X and B46X engines.

Should I change the coolant at the same time?
Yes. Flushing and refilling the coolant during the replacement clears out any sludge that has formed.

Fitment & Compatibility

Compare your production year and trim against the table below. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.