This pump impeller Ref. 138 is a flexible replacement impeller made of black neoprene with profile 8 for water, cooling water, and seawater pumps on inboard engines and other marine installations. The impeller has 6 flexible blades and is selected based on the pump's original reference, the impeller's dimensions, and the hub design.
The impeller has an outer diameter of 51.3 mm, a width of 22 mm, and a shaft/hub dimension of 7.31 / 8 mm. The shaft bore is designed with one flat side, also known as single-flat, which transfers rotation from the pump shaft to the impeller. When replacing, the diameter, width, hub dimension, number of blades, and profile must correspond to the existing impeller.
The spare part cross-references to Jabsco 6303-0001, Johnson Pump 09-824P and 09-834, and Oberdorfer 6617. In addition, JMP/DJ Pump 7053-01 is listed as a cross-reference. When replacing, both the impeller's dimensions, profile, hub design, and existing spare part number should be checked, as similar impellers may have nearly identical main dimensions but different shaft or hub profiles.
Documented cross-references include Jabsco 6303-0001, Johnson Pump 09-824P and 09-834, Oberdorfer 6617, and JMP/DJ Pump 7053-01. CEF reference 138 / CEF 500138 is used as an alternative reference for this impeller geometry.
This Ref. 138 should not be confused with other 6-bladed impellers around Ø50.8-51.3 x 22 mm. Small differences in the bore, hub design, and profile may mean that the impellers are not interchangeable, even if the outer dimensions are almost identical.
Key featuresPump impeller Ref. 138 for marine water, cooling water, and seawater pumps
Material: Black neoprene
Outer diameter: 51.3 mm
Width: 22 mm
Shaft/hub dimension: 7.31 / 8 mm
6 blades and profile number 8
Hub design: Bore with one flat side (single-flat)
Cross-reference: Jabsco 6303-0001, Johnson Pump 09-824P / 09-834 and Oberdorfer 6617
CEF reference: 138 / 500138
Always check the pump and engine model, original part number, dimensions, hub design, and impeller profile before purchasing.
