Westerbeke 041639 Fresh Water Pump & 037921 Gasket – Replaces 037919 – 4.5 BCG 7.0 BCG
Westerbeke 041639 Fresh Water Pump & 037921 Gasket
Replacement engine fresh water circulating pump and gasket for select Westerbeke gasoline marine generators.
This replacement pump fits applications originally equipped with Westerbeke 037919 and the later 041639 fresh water pump.
Part Numbers
041639 – Fresh Water Pump
037919 – Original / Superseded Fresh Water Pump
037921 – Fresh Water Pump Gasket
Compatible Westerbeke Models
• Westerbeke 4.5 BCG
• Westerbeke 7.0 BCG
• Westerbeke 7.0 BCGA
Serial Number Information
Westerbeke 4.5 BCG
• 037919 – Through Serial 0S12430
• 041639 – From Serial 0S12431
Westerbeke 7.0 BCG
• 037919 – Through Serial 1930333
• 041639 – From Serial 1930334
Included Parts
• Fresh Water Pump – Replaces 041639 / 037919
• Fresh Water Pump Gasket – Replaces 037921
Product Details
The fresh water pump circulates engine coolant through the closed cooling system to help maintain proper engine operating temperature.
Westerbeke 041639 supersedes the earlier 037919 fresh water pump. The 037921 gasket seals the fresh water pump to the engine.
This pump and gasket combination is ideal for replacing a leaking, worn, damaged, or failed engine coolant circulation pump on compatible Westerbeke marine generators.
Important Fitment Information
Verify your Westerbeke generator model, serial number, and original pump part number before ordering. Westerbeke used different water pump configurations depending on model and production date.
