Impeller Kit For Yanmar Marine Diesel 104211-42071 and Gasket 104211-42090
Impeller Kit For Yanmar Marine Diesel 104211-42071 and Gasket 104211-42090
Impeller Kit For Yanmar Marine Diesel
104211-42071 Impeller · 104211-42090 Gasket · Raw water cooled models only
- KIT INCLUDESImpeller + Gasket
- Impeller OEM104211-42071 (replaces 104211-42070, Sierra 18-8952)
- Gasket OEM104211-42090
- ⚙️ Cover Type6-bolt cover, 2-1/4" (58mm) diameter
- DrivePin drive (fits slotted shaft)
- Blades6
Essential for raw water pump rebuild on YS, GM, QM, SB, YSE, YSM series
Impeller Dimensions
✅ Fits Yanmar Models (Raw Water Cooled, Japan-built)
Also fits: All YS series, all Japanese built raw water cooled 2/3GM's, 2QM15, and the pump numbers 128270-42000, 128270-42002. This impeller (with drive pin) fits the slotted shaft on these models.
• Will not fit 1997 and later European made Yanmar (serial numbers starting with "E").
• Only for raw water cooled (seawater) engines. Does NOT fit closed cooling (antifreeze) models.
• For freshwater cooled (antifreeze) versions, look for model ending with "F".
OEM Cross Reference
104211-42070 104211-42071 Sierra 18-8952
104211-42090
128270-42000 128270-42002
To find the right part for your outboard, it is VERY IMPORTANT to verify outboard model or serial number before purchase. You can leave us a message e.g. your outboard engine parts model, serial number, horsepower or year if you are not confirmed this part fits your outboard motor or not. We're pleasure to help you.
Complete Product Reference
APPLICATION: This guide is to be used as a reference only. You must verify fitment using your model or serial number.
This will not fit Closed Cooling (antifreeze) Models. If your model has fresh water cooling (antifreeze), add "F" to the end of your model number.
Kit includes: Impeller and Gasket. Fits a 6-bolt cover with 2-1/4" (58mm) diameter.
Replaces: Impeller numbers 104211-42070, 104211-42071, Sierra 18-8952; Gasket 104211-42090.
Fits Yanmar: 2GM, 3GM, 3GMD (1980-83); 2GM20, 3GM30 (1983-05) raw water cooled (no antifreeze), Japan-built; 2QM15 (1977-80); SB8, SB12 (1976-80); SVE8, SVE12 (1974-76); YSB8, YSB12 (1976-77); YSE8, YSE12 (1974-76); YSM8, YSM12 (1977-80). Also pump numbers 128270-42000, 128270-42002.
Dimensions: Diameter 40mm (1.58"), Width 19mm (3/4"), Shaft 9.5mm (3/8"), 6 blades.
NOTE: To find the right part for your outboard, it is VERY IMPORTANT to verify outboard model or serial number before purchase. You can leave us a message e.g. your outboard engine parts model, serial number, horsepower or year if you are not confirmed this part fits your outboard motor or not. We're pleasure to help you.
Provide your engine model, serial number, horsepower, or year. We will assist you promptly.
✉️ Message us — “We're pleasure to help you.”
Installation Tip Lubricate the new impeller with glycerin or dish soap. Ensure the pin correctly engages the slotted shaft. Replace the gasket and torque cover bolts evenly. Always verify raw water flow after installation.
※ This aftermarket impeller kit meets or exceeds OEM specifications for Yanmar 104211-42071 / 104211-42090. Verify fitment with your exact engine before ordering.
© Marine Diesel Parts — verify model/serial number, we're here to help
Before You Buy
Please verify your engine model and serial number before purchase. Contact us for fitment confirmation. Free worldwide shipping from XRmarine.
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