How to Match This Part
This is a flexible rubber raw water pump impeller. It sits inside the pump housing behind the cover plate and is driven by a 12-spline shaft. It replaces the primary original part number Jabsco 31500-0001, and is also supplied against Jabsco 2999-0001, JMP 9100-01, DJ 08-17-1201, Kashiyama SP-500 and Yanmar 43600-400410 / 43600-400411.
Match this part by checking your engine in this order:
1. Original impeller part number (stamped on the old impeller or listed in the pump section of your parts catalog)
2. Blade count (this listing is 12 blades)
3. Drive type (this listing is a 12-spline hub, about 36 mm bore, with two puller holes in the brass face)
4. Diameter and width (this listing is 128 mm diameter and 101.5 mm wide)
Identify it physically before ordering. JMP 9100-01, Jabsco 31500-0001 and DJ 08-17-1201 are 12-blade impellers on this envelope. JMP 9206 on the source sheet is the 6-blade impeller of the same 128 × 101.5 × 36 mm spline size. DJ 09-17-1301 uses a 13-blade suffix. The supplied photo is 12 blades, so this listing is the 12-blade impeller.
- ✓ Primary OEM: Jabsco 31500-0001
- ✓ Product form: 12-blade cooling-service rubber impeller, brass 12-spline insert, 128 × 101.5 mm
- ✓ Fitment: part number, then 12 vs 6 vs 13 blades
