310-9067 3109067 Common Rail Diesel Fuel Injector Assembly for Cater-pillar C6.6 Engine

This heavy-duty industrial electronic fuel injector (OE No.: 310-9067, Interchangeable Reman No.: 10R-7230) is a high-precision fuel injection control core designed specifically for harsh, high-intensity operating environments. This product is perfectly compatible with Cater-pillar (CAT) C4.4, C6.6 ACERT and other high-pressure common rail diesel engines, and is widely used in Cater-pillar 320D, 320D2, 323D series backbone hydraulic excavators, D3K, D4K, D5K crawler bulldozers, as well as 924H, 938H wheel loaders and industrial special mobile generator sets.

Adhering to the manufacturing philosophy of "ultra-fine atomization and zero-delay response," the internal needle valve assembly and valve core undergo aerospace-grade ultra-precision grinding, and the surface is coated with a high-density, wear-resistant special coating. Once your heavy machinery is equipped with these brand-new injectors, you will intuitively feel the engine ignition become crisper and faster, with no lag in throttle response during actual operation or work. Even when the machinery encounters high resistance during digging or heavy-tonnage loading, the power output remains consistent and robust. Problems such as sudden engine stalling, RPM drift, and rough idling caused by pressure issues with older parts will disappear. Accompanied by the solid roar of the engine, you will experience increasingly significant overall operational benefits.

• Direct Sales from Our Own Manufacturing Plant, Breaking the Channel Premium of Multinational Distributors: Addressing the predicament of traditional multi-level distribution networks monopolizing major heavy machinery parts, resulting in high retail prices and slow after-sales technical support, we rely on our own modern production base for independent direct sales. This flat supply chain directly to buyers eliminates all intermediary profits, directly reducing users' replacement parts expenses and saving you or your fleet significant operating and maintenance costs.
• Maintaining a large-volume dedicated inventory to prevent downtime losses due to parts delays: Commercial construction machinery is a capital-intensive, high-output tool. If it becomes paralyzed and breaks down due to internal leakage from the fuel injection system, it will incur huge daily idle costs and the risk of penalties for project delays. Therefore, we implement dynamic inventory management with a high reserve limit for this long-lasting, best-selling model, ensuring ample stock at all times. Once an order is confirmed, it is packaged and shipped immediately, using rapid international logistics to help your machinery quickly return to the work site.
• 100% microsecond-level digital rigorous quality inspection to prevent faulty parts from entering the market: Addressing the common problems of solenoid valve delays, internal high-pressure leaks, and needle valve coking and jamming issues found in injectors from inferior manufacturers, every one of our products undergoes a high-precision, fully automated testing bench before leaving the factory. Under 100% simulated extreme high-temperature and ultra-high-load working conditions, the pre-injection, main injection volume, and return oil airtightness indicators are precisely measured to ensure that every product delivered to you has an excellent long-lasting wear life.

• Municipal infrastructure and high-intensity loading operations of large hydraulic excavators: In urban rail or pipeline construction sites with high dust levels, harsh construction environments, and tight schedules, Cater-pillar 320D excavators equipped with C6.6 engines are performing continuous hard soil excavation and large-tonnage loading. As the hydraulic bucket cuts into hard rock layers, causing a sudden increase in system load, the 310-9067 injector, with its microsecond-level electronic control response, establishes perfect atomization pressure. This ensures that the engine can still output continuous high torque even when facing drastic fluctuations in engine speed, resulting in smooth compound movements and preventing stalling or engine misfires.
• High-Dust Quarry Bulk Loading and Continuous Bulldozing and Leveling Operations: In large sand and gravel quarries or mining areas with rampant dust and high ground resistance, the Cater-pillar D5K tracked bulldozer is performing high-frequency reciprocating bulldozing and leveling operations. Operators frequently increase throttle and quickly change direction. The injector, relying on its extremely high fuel supply consistency, precisely controls the timing of each injection, ensuring complete combustion of diesel fuel in the cylinder. This guarantees the equipment's powerful traction while significantly reducing exhaust smoke, effectively locking in energy costs for long-term operation.

A: We guarantee that the injectors sold on our independent website are 100% brand new, high-quality replacement parts, not second-hand, recycled, or refurbished. Because we are a factory directly operated by ourselves, shipping goods directly from our workshop warehouse to end users worldwide, we eliminate the commissions and expenses of multiple layers of distributors and physical stores, allowing us to offer you truly factory-direct prices.

A: We are well aware of the associated work stoppages caused by heavy machinery downtime, therefore we maintain ample stock of this core model year-round. Goods will be checked and shipped within 24 to 48 hours after you complete your order payment. We use major international express delivery channels such as DHL and FedEx, and delivery is usually safe within 5-9 business days.

A: The common rail system of heavy-duty diesel engines is extremely precise, with zero tolerance for even the smallest metal fragments or impurities. Before installing a new injector, please ensure your technician thoroughly cleans the original diesel tank, common rail, and entire fuel line, and replaces the fuel filter with a brand new, high-specification one. Ensuring a clean fuel system is a prerequisite for maximizing the performance of new parts and guaranteeing their extended lifespan.

A: As long as the product has not been opened or tested, its appearance and accessories are intact, and it does not affect our resale, we offer a 90-day return and exchange guarantee. Furthermore, this brand new injector enjoys an extended 12-month warranty. If any quality malfunctions occur that are not caused by human error or contamination by inferior diesel fuel, our after-sales customer service team will provide you with technical analysis or free replacement service as soon as possible.