Vetus Circulating Water Pump | Vetus VT STM2677 Engine water circulating pump fits various Vetus & Westerbeke diesel engines. Includes bypass hose nipple Pump mounting gasket STM2678 sold separately. Vetus engine circulating pump DOES NOT INCLUDE pump mounting gasket p/n STM2678 - sold separately Includes bypass hose nipple Fits Westerbeke 7.7 WMD, 8.0 WMD, and 11.0 WMD, diesel generator models Fits Westerbeke 8.0 BTD, 10.0 BTD,11.0 BTD,12.5 BTD and 12.6 BTD diesel generator models Fits Westerbeke 12.5 BTDA,12.5 BTDB and 15 BTDC diesel generator models Fits Westerbeke W18, W21 and W27 diesel marine engine models Fits Westerbeke 35B Three, 38B Four, and 42B Four diesel marine engine models Replaces Westerbeke 30591 and 45231