Hello Thu86,
Which O11D plate you have?
BPTA-WDPO11DA-PWM or BPTA-WDPO11DE-PWM-V2 ?
1. The pump on both of them can be replaced by BP-DDCPLS32-PWM. But the screws length is different.
2. The top with two white nozzles of BP-DDCPLS32-PWM has to be removed before installing the pump on.