Description
Review this item in the context of the repair, installation access, nearby parts, and the result the completed job is intended to achieve.
This fits a 6 bolt cover with a 2-1/4″ (58mm) diameter. Major pump repair kit similar to Yanmar K28270-42000 Replaces: Cam 104211-42050 Cover 104211-42080 Lip Seal 104211-42100 Slinger 104211-42110 Plate 104211-42120 ( bearing cover ) Bearing (2) 24107-062004 Spacer 104211-42130 ( bearing ) Retaining Ring 22252-000300 Impeller 104211-42070 , 104211-42071 , Sierra 18-8952 Gasket 104211-42090 Stainless Screws 6 cover , 1 cam May contain aftermarket parts. Pump numbers: 128270-42000 , 128270-42002 Fits Yanmar: 2GM , 3GM , 3GMD , (1980-83) 2GM20 , 3GM30, (1983-2005) raw water cooled (no antifreeze), made in Japan. Will not fit 1997 and later European made. ( the serial number will start with E on the European models) 2QM15 , (1977-80) SB8 , SB12 , (1976-80) SVE8, SVE12, (1974-76) YSB8 , YSB12 , (1976-77) YSE8 , YSE12 , (1974-76) YSM8 , YSM12 , (1977-80) 104211-42071
Vehicle information
Available fitment details
Listing compatibility notes
- About this item This fits a 6 bolt cover with a 2-1/4" (58mm) diameter.
- This will not fit Closed Cooling ( antifreeze ) Models.
- Similar to Yanmar K28270-42000 Fits Yanmar: 2QM15 , SB8 , SB12 , SVE8 , SVE12 , YSB8 , YSB12 , YSE8 , YSE12 , YSM8 , YSM12 , and some GM models Impeller Specifications Diameter: 40mm (1.
- 5mm (3/8") 6 Blades This fits a 6 bolt cover with a 2-1/4" (58mm) diameter.
- Pump numbers: 128270-42000 , 128270-42002 Fits Yanmar: 2GM , 3GM , 3GMD , (1980-83) 2GM20 , 3GM30, (1983-2005) raw water cooled (no antifreeze), made in Japan.
- Will not fit 1997 and later European made.
Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.
Repair scenarios, installation, companion parts, and use outcomes
Buying guidance
Quick decision
Review this water pumps in the context of the repair and the surrounding components.
Repair scenario
- Identify the symptom and confirm that this is the component required by the repair.
- Inspect nearby connectors, fasteners, and mating surfaces before installation.
Installation notes
- Use the listing instructions when present and follow the vehicle service procedure.
- Professional installation may be appropriate when the repair requires special tools or calibration.
Companion parts
- Inspect nearby fasteners, connectors, seals, fluids, and wear items before starting the repair.
- Use the service procedure and the visible package contents to identify any additional parts or tools required.
Before you buy
- Compare the listing title, photos, package contents, and specifications with the part being replaced.
- Confirm vehicle compatibility and installation requirements before ordering.
Customer feedback
Ratings and written reviews
5.0 / 5
6 source ratings
Source: Amazon. Imported marketplace feedback is shown for product research and is not a review of a purchase made on this website.
Alfredo Navarro –
Excelente
Customer –
I have an older YSM 12 Yanmar diesel engine on my sailboat. Probably a 1980 era engine. The pump is unique and was built well but hard to find. This impeller rebuild kit was great and worked perfectly for rebuild maintenance of the impeller pump. I bought two for spares and was quite happy with the quality and parts included in the kit. I did have to press out the bearings and the seals but the kit has held up well for two seasons. My engine is a raw water setup, I did find flushing my engine with fresh water helps prolong the impeller pump parts. The bearings and rubber impeller were what failed previously in the pump and this kit was a good fix. I like that it includes the proper screws for the back access plate as well. Also learned not to tension the belt too much as it sheared off the old pulley. Another hard one to find. I would buy again and was happy I found this kit and plan to keep a spare at all times on board. Hope this reviews helps others the way it helped me.
Tom –
Very well made kit.