Fuel Injection Pump 4941173 For B3.3 QSB3.3 Engine

Keywords: 4941173 fuel injection pump, B3.3 diesel injection pump, QSB3.3 engine fuel pump, excavator engine fuel injection assembly, construction machinery fuel system spare parts, aftermarket fuel injection pump

🔹Product Overview

Fuel Injection Pump Part No.4941173 is high‑precision engine fuel injection assembly, compatible with B3.3 and QSB3.3 diesel engines applied for excavators, skid steer loaders and other industrial machinery. This core fuel component delivers metered high‑pressure diesel fuel to each cylinder injector according to engine working condition, controls fuel supply timing and fuel quantity, guarantees stable engine power output, smooth acceleration and good fuel economy. It effectively solves typical faults such as hard starting, engine lack of power, excessive black smoke, unstable idling and fuel supply disorder caused by internal plunger wear, valve damage and component aging. Strictly manufactured and tested under OEM standard for engine fuel system replacement and overhaul repair.

🔹Detailed Specifications

🔹Key Features & Advantages

• ✅ Strictly follow OEM dimensional and performance requirements, perfect fit for B3.3 / QSB3.3 engine fuel installation interface.
• ✅ High‑precision internal plunger and valve components, stable high‑pressure fuel output, accurate fuel metering and injection timing.
• ✅ Good anti‑wear performance, adapt to complex working condition of construction machinery, extend service life.
• ✅ Restore original engine performance, improve starting performance, reduce black smoke emission and optimize fuel consumption.
• ✅ Every injection pump undergoes pressure test and function inspection before factory delivery.
• ✅ Core replacement spare part for engine fuel system repair and complete engine overhaul project.

🔹Application Scope

Fit Equipment: Excavators, skid‑steer loaders and industrial machinery equipped with B3.3, QSB3.3 diesel engine ‑ Widely used for machinery repair workshops, vehicle fleet maintenance and engine overhaul projects.

🔹Our Company Advantage

We are professional supplier of full‑range construction machinery spare parts, supplying hydraulic parts, engine parts, electrical parts, seal kits and complete overhaul kits. ‑ Large ready stock for various machinery spare parts ‑ Factory‑direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service

🔹Packaging & Shipping

Neutral carton packaging with anti‑shock protection to avoid damage during transportation ‑ Export‑grade outer carton for safe sea and land transportation ‑ Multiple shipping options: sea freight, air freight, international express for small trial orders ‑ Export documents such as Commercial Invoice, Packing List can be provided.

🔹Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.