| OE Number | 64116922699, 64110151692 |
| Fitment | BMW 5 Series (E39), X5 (E53), 7 Series (E65/E66); Rolls-Royce Phantom (RR1, RR2, RR3) |
| Type | Electric Auxiliary Water Pump (Heater Pump) |
| Function | Circulates coolant through the heater core for cabin heating and assists in engine cooling loops. |
| Features | Direct OE replacement, durable construction, high-efficiency electric motor, ensures rapid heating and reliable auxiliary cooling. |
This high-quality Electric Auxiliary Water Pump is a direct replacement for BMW OE number 64116922699 (supersedes 64110151692). Designed for classic BMW chassis like the E39 5-Series, E53 X5, and E65 7-Series, as well as Rolls-Royce Phantom models, this pump is critical for the HVAC system. It actively circulates hot coolant through the heater core to provide cabin heat, even at idle or low engine speeds. Manufactured to strict OEM specifications, it guarantees a perfect fit, quiet operation, and long service life.
Ensure the engine is cool and the battery is disconnected. Locate the auxiliary water pump (usually mounted near the firewall or heater core). Drain a small amount of coolant to prevent spillage. Disconnect the electrical connector and remove the mounting bolts/hoses. Install the new pump, reconnect the electrical plug and hoses, and secure the mounting bolts. Refill coolant if necessary and bleed the system to remove air pockets.