294000-1680 294000-1684 55493105 Fuel Pump Assy for Chevrolet Holden Colorado 2.8L Engine

This industrial-grade diesel engine high-pressure common rail fuel pump (OE No.: 294000-1680) is an ultra-high-pressure fuel supply control center developed for the power systems of commercial vehicles and modern construction machinery. This product is precisely matched to high-pressure common rail diesel engines such as the HINO J05E and J08E, and is widely used in Hino medium and heavy-duty trucks, urban public transport buses, and Kobelco SK200-8, SK210-8, and SK260-8 main medium and large hydraulic excavators.

This high-pressure fuel pump adopts advanced high rail pressure stabilization technology. The internal core plunger assembly and high-pressure check valve have undergone ultra-precision grinding and quenching strengthening, comprehensively optimizing fuel pressurization efficiency. After replacing the pump in a vehicle or machine, the operator will immediately feel a crisp and clean engine ignition during actual operation, and the rough vibrations and abnormal noises at low-speed idling will completely disappear. When machinery encounters deep pits and heavy-duty excavation, or when long-haul vehicles are fully loaded and climbing steep slopes, the oil pump, thanks to the sensitive adjustment of the electronically controlled SCV valve, can instantly build up and maintain a constant ultra-high pressure. This eliminates the common problems of old pumps, such as oil pressure collapse, power loss, sudden engine stalling, and unstable idling, allowing your engine to regain its exhilarating output.

• Self-built manufacturing plant and direct online sales, eliminating the markups of multiple intermediaries: Addressing the high prices of spare parts for major heavy-duty commercial vehicles and construction machinery, and the high retail prices resulting from overseas cross-border trade networks, we rely on our own manufacturing plant to conduct direct online sales. This streamlined model, directly reaching buyers, completely eliminates all price differences from intermediaries, directly reducing your daily operating and maintenance budget with pure factory prices.
• Massive Inventory of Ready Stock to Prevent Downtime and Delays Due to Spare Parts Shortages: When logistics trucks or construction machinery stop due to high-pressure oil pump wear and internal leakage, it means significant daily losses from idle time and penalties. We implement a high-response dynamic inventory management system for this model, maintaining ample stock year-round. Once an order is confirmed, it immediately enters the inventory, reinforces packaging, and is shipped out with lightning speed, helping your equipment quickly return to operational status.
• 100% Fully Simulated Operating Condition Digital Bench Testing to Eliminate the Risk of Defective Products Entering the Market: Addressing the common problems of inferior small-factory oil pumps, such as piston wear and jamming, poor high-pressure airtightness, and SCV control valve malfunction, every product we manufacture undergoes a high-precision fully automated testing bench before leaving the factory. In a 100% simulated extreme high-temperature and ultra-high-load environment, the pump's pumping efficiency, return oil volume, and maximum durability pressure are calibrated one by one to ensure flawless quality upon delivery.

• Municipal infrastructure earthwork excavation and heavy-load operations: In urban rail or foundation excavation sites with tight schedules and requiring 24/7 operation, the Kobelco SK200-8 hydraulic excavator equipped with a J05E engine is performing continuous high-intensity loading. As the hydraulic bucket cuts into hard soil, causing a sudden increase in resistance, the 294000-1680 high-pressure oil pump, with its microsecond-level SCV control valve response, instantly provides ample high-pressure fuel, ensuring the excavator's operation under low speed and heavy load is seamless and never stalls or shuts down.
• Intercity Fully Loaded Freight and Mountainous Continuous Steep Slope Transportation: Heavy-duty dump trucks loaded with large quantities of building materials are traveling on inter-provincial trunk lines and continuous mountain roads. Facing prolonged heavy-load climbs, drivers frequently press the accelerator to adjust gears. The high-pressure fuel pump, relying on its excellent rail pressure build-up speed, ensures that every drop of diesel fuel is completely atomized and burned within the cylinder. This maintains ample climbing power while significantly improving exhaust smoke and effectively locking in energy consumption.