Sierra Impeller Kit 223-3305 for Westerbeke 32620 Marine Generators

The Sierra Impeller Kit, part number 223-3305, is a replacement impeller kit designed for the raw water cooling pump on Westerbeke marine generators, including the Westerbeke 32620. The impeller is the wear component inside a generator's raw water pump that circulates cooling water through the engine; over time the rubber vanes lose flexibility, crack, or shed material, leading to overheating and reduced cooling flow. Replacing the impeller kit at regular service intervals helps keep the generator's cooling system operating at proper capacity and helps prevent downstream damage to the heat exchanger or engine block.

This kit is built to Sierra's standard of meeting or exceeding the original equipment part it replaces, and is intended to withstand the harsh marine operating environment. It is suited for a wide range of Westerbeke generator models spanning both 50Hz and 60Hz configurations, making it a broadly applicable replacement part for owners servicing Westerbeke-powered generator sets. The kit ships as a compact, lightweight component for straightforward installation during routine maintenance.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 223-3305
• Product Name: Impeller Kit
• Category: Westerbeke Generator Parts
• Weight: 0.08 pounds
• UPC: 808282288549
• GTIN: 00808282288549
• Fit Type: Universal Fit

Fitment

• Westerbeke 32620 generator
• Westerbeke 3.0 WMD (60Hz) / 2.4 WMD (50Hz)
• Westerbeke 3.8/4.2 BCDT (60Hz) / 3.5 BCDT (50Hz)
• Westerbeke 4.0 BCG (60Hz) / 3.0 BCG (50Hz)
• Westerbeke 4.5 BCG (60Hz) / 3.75 BCG (50Hz)
• Westerbeke 4.5 BCGB (60Hz) / 3.75 BCGB (50Hz)
• Westerbeke 4.5 BCGTC (60Hz) / 3.75 BCGB (50Hz)
• Westerbeke 6.5 BCG (60Hz) / 4.8 BCG (50Hz)
• Westerbeke 7.0 BCG (60Hz) / 5.0 BCG (50Hz)
• Westerbeke 7.0 BCGA (60Hz) / 5.0 BCGA (50Hz)
• Westerbeke 7.0 BCGB (60Hz) / 6.0 BCGB (50Hz)
• Westerbeke 7.2 BCGTC (60Hz) / 6.0 BCGTC (50Hz)
• Westerbeke 9.0 BTG (60Hz) / 7.0 BTG (50Hz)
• Westerbeke 9.6 BCGTC (60Hz) / 8.0 BCGTC (50Hz)

Frequently Asked Questions

What generator does the Sierra 223-3305 impeller kit fit? This impeller kit fits the Westerbeke 32620 generator as well as a broad range of other Westerbeke generator models across both 50Hz and 60Hz configurations, such as the 3.0 WMD, 4.0 BCG, 6.5 BCG, 7.0 BTG, and 9.6 BCGTC series.

Is the 223-3305 a universal fit part? Yes, Sierra lists the 223-3305 impeller kit as a universal fit item across its supported range of Westerbeke generator models rather than being restricted to a single model.

How much does the impeller kit weigh? The Sierra 223-3305 impeller kit weighs 0.08 pounds.

What is included in the Sierra 223-3305 kit? The kit includes the impeller component for the Westerbeke generator raw water pump identified by Sierra part number 223-3305.

Why would I need to replace the impeller in my Westerbeke generator? Impellers are a wear item in raw water pumps; the rubber vanes stiffen or crack with age and heat, which reduces cooling water flow and can lead to overheating if not replaced with a kit like the 223-3305.

Does Sierra back this part with a warranty? Sierra parts, including the 223-3305 impeller kit, are covered by Sierra's customer satisfaction warranty against defects in workmanship and materials.

Is the 223-3305 an OEM part or an aftermarket replacement? The 223-3305 is a Sierra-manufactured replacement part engineered to meet or exceed the original equipment part it replaces on supported Westerbeke generators.

What is the UPC for this part? The Sierra 223-3305 impeller kit carries UPC 808282288549.

Will this impeller kit work on both 50Hz and 60Hz Westerbeke generators? Yes, the 223-3305 covers models rated for both 50Hz and 60Hz operation, for example the 4.5 BCG (60Hz) / 3.75 BCG (50Hz) variant.

Does the 223-3305 replace a specific OEM Westerbeke part number? No specific OEM cross-reference number is listed for the Sierra 223-3305 impeller kit; it is identified by its Sierra part number and its fitment to the listed Westerbeke generator models.