Impeller Kit 129470-42532 for Yanmar 3JH 4JH Marine Engines - 12-Blade Spline Drive
Premium 12-Blade Impeller Kit 129470-42532 for Yanmar 3JH & 4JH Marine Engines – Complete Kit!
Give your Yanmar marine engine optimal cooling with this high-quality 12-blade impeller kit. Fits 3JH and 4JH series - a complete kit with impeller, O-ring and gaskets!
🔧 Complete kit with 6 parts:
- 1x Premium 12-blade impeller with brass insert
- 1x O-ring
- 4x Gaskets
⚙️ Technical Specifications:
- Outer diameter: 57 mm (2.24")
- Height: 31.5mm (1.24")
- Shaft diameter: 15.8 mm (0.62")
- Number of blades: 12 (maximum water flow!)
- Drive type: Spline Drive (gear)
- Insert material: Brass (corrosion-resistant)
- Weight: approximately 150 grams
✅ Fits the following Yanmar marine engines:
3JH series: 3JH2E, 3JH2-TE, 3JH3E, 3JH3E-YEU, 3JH4E, 3JH5E
4JH series: 4JHE, 4JH-TE, 4JH-HTE, 4JH-DTE, 4JH2E, 4JH2-TE, 4JH2-HTE, 4JH2-DTE, 4JH2-UTE, 4JH3E, 4JH3E-YEU, 4JH3-TE, 4JH3-HTE, 4JH3-DTE, 4JH4E, 4JH4-HTE, 4JH4-TE, 4JH4AE, 4JH5E
🔄 Replaces OEM numbers:
Yanmar: 129470-42530, 129470-42531, 129470-42532, 127610-42270
Sierra: 18-3081
CEF: 50007
✅ Also suitable for:
- Jabsco: 1210-0001, 1210-0001-P, 3085-0001, 1210-0003
- Johnson: 09-1027B, 09-1027B-1
- Volvo Penta: 3862567, 825940, 860203, 875811, 386257, 3862465
- Perkins: 24880190, 0460038
- CAT: 2323198
- Detroit: 5194205
- Westerbeke: 302571
- Kohler: 252882
- Onan: 132-0162
- Northern Lights: 25-12060
✨ Why choose this kit?
- ✅ Complete kit – impeller, O-ring and 4 gaskets included
- ✅ 12-blade design – superior water flow and efficient cooling
- ✅ Spline Drive – reliable power transmission
- ✅ Brass insert – withstands salt water and extreme conditions
- ✅ Exceptional compatibility – fits Yanmar, Volvo Penta, Jabsco and others.
- ✅ OEM quality – professional performance at a better price
- ✅ Long-lasting durability – high-quality materials
⚠️ Why is regular maintenance critical?
A functioning impeller is crucial to the survival of your Yanmar marine engine. A worn or damaged impeller can lead to overheating, reduced performance and, in the worst case, total failure. Experts recommend replacing it every season or every 200 hours of operation – especially important for Yanmar diesel engines.
💡 Pro tips from the experts:
Always check the cooling water jet at every engine start – a weak jet is a warning sign! Replace the impeller at the start of the season, even if it looks OK. For Yanmar marine engines, it is especially important to use the correct impeller with spline drive – the wrong type can lead to insufficient cooling. When installing, make sure the teeth are seated correctly. Always have a spare kit on board!
🎯 Perfect for:
- Yanmar 3JH & 4JH marine engines
- Sailboats with Yanmar engines
- Professional workshops
- Boat owners with Yanmar engines
- Preventive maintenance
- Seasonal service
🚀 Fast delivery – get your engine in top condition again!
Order today and ensure optimal performance for your Yanmar marine engine. With this complete 12-blade impeller kit, you get reliable cooling that lasts season after season. 🚤

