1100 GPH Bilge Pump - External Field Sensor, 30s Overrun
4211021
1100 GPH center bilge pump. Replaces the yellow/black 650 GPH pump. Includes the delphi quick connector that will not be found on models purchased through a non-Malibu retailer.
Keep your center bilge drier and your boat better protected with this 1100 GPH bilge pump update for 2026. Designed as a direct replacement for the older yellow/black model, this pump uses the same wire-harness connections for an easy swap, while adding an external field sensor to improve reliability and pumping performance.
The updated design was introduced to solve common issues seen with the previous pump style—most notably the filter head separating and ending up loose in the bilge—and to help the bilge cycle start sooner by detecting water at a lower elevation.
- 1100 GPH capacity for dependable bilge water removal
- Direct replacement for the older yellow/black center bilge pump
- Same wire harness connections for straightforward installation
- External field sensor triggers the bilge sequence earlier by sensing water lower in the bilge
- 30-second overrun timer keeps the pump running after water is no longer sensed to clear remaining water below sensor height
- Improved reliability by addressing the filter head/fitting issues common to the prior design
Compatibility note: Intended for Malibu Boats applications where the center bilge pump is specified as 1100 GPH and replaces the older yellow/black version. If you’re unsure, compare your existing pump to the “old model” image and confirm harness/fitment before ordering.
