Sierra Rotor 223-2803, Replaces Westerbeke 43050, for Westerbeke Generators

The Sierra Rotor, part number 223-2803, is a machined replacement rotor engineered for select Westerbeke marine generators. As a core rotating component of the generator's electrical system, the rotor works with the stator to produce the AC current that powers onboard electrical loads, so a worn or failed rotor can lead to weak, inconsistent, or absent generator output. This rotor is built to restore original generator performance and is manufactured with a machined exterior finish for accurate fit and reliable operation in the marine environment.

This part is designed to fit a wide range of Westerbeke generator models across the BEG, SBEG, BCG, BCGA, BCGB, BCGC, and BCGTC series, covering both 60Hz and 50Hz configurations from 4.5 kW up through 15.0 kW output ratings. Because Westerbeke generator model designations vary by kW rating and configuration suffix, boat owners and technicians should confirm their specific generator model designation against the fitment list before ordering to ensure this rotor is the correct match.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 223-2803
• Product Type: Rotor
• Category: Westerbeke Generator Parts
• Exterior Finish: Machined
• Weight: 0.04 pounds
• Package Dimensions: 5.334 cm L x 9.906 cm W x 11.176 cm H
• Country of Origin: China
• Number of Items: 1
• UPC: 808282304348
• GTIN: 00808282304348

Fitment

• Westerbeke generators: 4.5 BCGB, 4.5 BCGTC, 5.0 BCG, 5.0 BCGA, 5.0 SBCG, 6.5 SBCG, 7.0 BCGB, 7.0 BCGC, 7.2 BCGTC, 8.0 BEG, 8.0 SBEG, 9.6 BCGTC, 10.0 BEG, 10.0 SBEG, 12.5 BEG, 12.5 SBEG, 14.0 SBEG, 15.0 BEG (60Hz and 50Hz ratings as applicable)

Replaces (OEM)

• Westerbeke 43050

Frequently Asked Questions

What is the Sierra 223-2803 rotor used for? The Sierra 223-2803 is a rotor for select Westerbeke marine generators, a core component that works with the stator to generate the AC electrical output the generator produces.

Which Westerbeke generator models does part 223-2803 fit? Part 223-2803 fits Westerbeke generator models in the BEG, SBEG, BCG, BCGA, BCGB, BCGC, and BCGTC series, including 60Hz and 50Hz configurations ranging from 4.5 kW to 15.0 kW output.

Does the Sierra 223-2803 replace Westerbeke part 43050? Yes, the Sierra 223-2803 rotor is a replacement for Westerbeke 43050.

What finish does the 223-2803 rotor have? The 223-2803 rotor has a machined exterior finish for accurate fit and reliable performance in marine generator applications.

How much does the Sierra 223-2803 rotor weigh? The 223-2803 rotor weighs 0.04 pounds.

What are the package dimensions of the 223-2803 rotor? The 223-2803 ships in packaging measuring 5.334 cm long by 9.906 cm wide by 11.176 cm high.

Is the Sierra 223-2803 an OEM part or aftermarket? The 223-2803 is an aftermarket replacement rotor manufactured by Sierra, engineered to meet or exceed the performance of the original Westerbeke rotor it replaces.

How many rotors come in a package of part 223-2803? Part 223-2803 is packaged with a single rotor unit.

Where is the Sierra 223-2803 rotor manufactured? The 223-2803 rotor's country of origin is China.

Why would I need to replace a generator rotor like the 223-2803? A worn or failed rotor, such as the 223-2803 replacement for Westerbeke generators, can cause weak, inconsistent, or absent AC output from the generator, since the rotor is essential to the generator's power-producing function.

Is the 223-2803 compatible with both 50Hz and 60Hz Westerbeke generators? Yes, the 223-2803 fitment list covers Westerbeke generator models rated for both 60Hz and 50Hz operation across the BEG, SBEG, BCG, BCGA, BCGB, BCGC, and BCGTC series.

What is the UPC for the Sierra 223-2803 rotor? The UPC for the Sierra 223-2803 rotor is 808282304348.