This pump impeller Ref. 108 is a flexible spare part impeller with profile 26 for water, cooling water, and seawater pumps on inboard engines and other marine installations. The impeller has 12 blades and is supplied in a CGT version with key, gasket, and cover.
The impeller has an outside diameter of 57 mm and a width of 31.6 mm. The shaft/hub dimension is 15.93 / 16 mm, stated as the internal and external measurement respectively. The hub is designed with a key drive, which transfers the rotation from the pump shaft. When replacing, the diameter, width, hub dimension, number of blades, and drive profile must correspond to the existing impeller.
The spare part has Oberdorfer B6620 as a documented original reference. The corresponding impeller geometry also cross-references to Jabsco 4568-0001 as well as several Yanmar references. When replacing, both the impeller's dimensions, profile, hub design, and existing part number should be checked, as the engine or pump make alone is not always sufficient to identify the correct impeller.
Documented cross-references include:
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Jabsco: 4568-0001 / 1427-0003 / 2877-0001
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Johnson: 09-801B / 09-801B-1
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Yanmar: 124310-46090 / 145410-46090
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Volvo Penta: 875575-3 / 831182 / 835182 / 875573 / 21951350
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Oberdorfer: 6620
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DJ Pump: 08-22-1201
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CEF: 500108
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Sierra: 18-3075
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GLM: 89530
- Orbitrade: ORB-15575
The documented Yanmar references make the impeller relevant for a range of Yanmar engine and pump installations. The specific raw water pump can, however, vary between engine models and production years, and the pump's or the existing impeller's part number should therefore always be checked before ordering.
Key features
Pump impeller Ref. 108 for inboard engine pump and marine pump
Outside diameter: 57 mm
Width: 31.6 mm
Shaft/hub dimension, internal/external: 15.93 / 16 mm
12 blades and profile number 26
Hub design: Key drive
CGT version with key, gasket, and cover
Original reference: Oberdorfer B6620
Cross-reference: Jabsco 4568-0001 and Yanmar 145410-46090 / 124310-46090 / 145410-46050
Stated compatible engines:
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Yanmar inboard diesel: 145410-46090 / 124310-46090 series (4JH / 3JH)
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Volvo Penta gasoline engines, AQ series: AQ115, AQ120, AQ125, AQ130, AQ131, AQ140, AQ145, AQ151, AQ165, AQ170, AQ171 as well as BB and MB variants
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Volvo Penta diesel engines: MD21 / AQD21
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Kubota marine diesel: D1703-BGE, F2803-BGE, V1903-BGE, V2203 (used, among others, in Phasor Marine generators)
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Phasor Marine: Diesel generator sets
Always check pump and engine model, original part number, dimensions, hub design, and impeller profile before purchasing.
