Fuel Injection Pump for Yanmar 4TNV94 Engine

Restore full power and fuel delivery to your Yanmar-powered equipment with this precision OEM-replacement fuel injection pump. Engineered to match Yanmar factory specifications for the 4TNV94 engine, this pump delivers the correct fuel pressure, timing, and flow rate — ensuring reliable starts, maximum power output, and efficient operation across compact construction, agricultural, and industrial applications.

✅ What's Included

• 1 × Fuel Injection Pump
• Part Numbers: 129978-51000 / 294000-1300

🔧 Compatible With

• Yanmar Engine: 4TNV94
• Fits a wide range of compact equipment powered by the Yanmar 4TNV94 engine, including mini excavators, compact track loaders, forklifts, generators, and agricultural machinery
• Always verify your engine serial number and existing part number before ordering. Contact us if you need fitment confirmation.

⚙️ Key Features

• Direct OEM replacement — engineered to Yanmar factory specifications for precise fitment
• Delivers correct fuel pressure, timing, and flow rate for optimal combustion
• Restores full engine power, torque, and hydraulic performance
• Eliminates hard starting, power loss, excessive smoke, and rough running
• Built to withstand the high-cycle demands of compact construction and industrial operation
• Manufactured to meet or exceed original Yanmar specifications

🛠️ Signs Your Injection Pump Needs Replacing

• Hard starting or failure to start
• Significant loss of engine power or digging/lifting force
• Excessive black or white exhaust smoke
• Rough running or engine surging under load
• Fuel leaks from the pump body
• Increased fuel consumption with reduced output
• Diagnostic fault codes related to fuel delivery or injection timing

📦 Why Buy from Fuel Parts Depot?

We specialize in compact and heavy equipment fuel system components. Every part is sourced for quality and fitment accuracy — so you can order with confidence, minimize downtime, and get your machine back to work fast.

SKU: 129978-51000  |  Fits: Yanmar 4TNV94 Engine  |  Qty: 1 Pump per Order