Series - Product Details

The 20R-0849 Fuel Injector is a high-performance, OE-matched common rail fuel injector specifically developed for the C-aterpillar 3512B series diesel engine—an industry-leading power unit widely applied in marine propulsion, large-scale mining equipment, heavy-duty power generation systems, offshore drilling platforms, and industrial manufacturing. As a core component of the engine’s fuel supply system, the 20R-0849 is distinguished by its robust structural design, high-precision fuel metering, and exceptional resistance to harsh operating conditions, delivering reliable performance that meets and even surpasses C-aterpillar’s original equipment standards. It is engineered to endure high-pressure fuel delivery, extreme temperature variations, prolonged exposure to corrosive fuels (including Heavy Fuel Oil, HFO, and low-sulfur diesel), and harsh environmental impacts, ensuring consistent engine power output, minimizing unplanned downtime, and extending the service life of the C-aterpillar 3512B engine. Below are its comprehensive specifications and core features, presented in 5 detailed tables with corresponding in-depth descriptions to fully showcase its unique advantages and technical superiority.

1. Basic Product Information & Compatibility

The 20R-0849 injector is custom-engineered to achieve perfect integration with the C-aterpillar 3512B engine, ensuring seamless compatibility and hassle-free direct replacement. Its broad OE compatibility (20R0849, 392-0213, 10R-1276, 373-4088, 250-1313) eliminates the need for adapters, custom modifications, or additional tools, significantly reducing installation complexity and equipment downtime. The 1:1 OE size match and strict precision machining tolerance (±0.01 cm) guarantee a tight, secure fit, while the 100% brand-new, factory-pre-calibrated design ensures optimal performance right out of the box, eliminating the need for on-site calibration. A key feature of the 20R-0849 is its versatile fuel compatibility, supporting up to B70 biodiesel and M40 methanol-blended diesel, as well as HFO, making it suitable for global applications with varying fuel quality. Backed by multiple international certifications, it meets the strictest regulatory requirements for industrial and marine use, ensuring compliance and reliability.

2. Core Performance Parameters

The 20R-0849 injector delivers reliable, industry-leading performance that directly enhances the C-aterpillar 3512B’s operational efficiency, reliability, and cost-effectiveness. Its injection cycle life of ≥4,500,000 full-load cycles is a key advantage, being 70% longer than standard aftermarket injectors and 25% longer than the OE 10R-1276, which significantly reduces replacement frequency and unplanned downtime—critical for high-demand applications like marine propulsion and mining. The ultra-precise fuel delivery accuracy (±0.03% deviation) minimizes fuel waste by 18-22% while optimizing engine power output by up to 12%, directly cutting operational costs. Its 18-hole ultra-fine atomization (SMD D32 ≤32um) achieves 99.9% complete combustion, lowering harmful emissions and reducing engine wear, while the rapid response time (≤0.0005 seconds) ensures smooth operation under variable loads. The wide operating temperature range (-60°C to 210°C) makes it adaptable to the harshest environments, from arctic cold to desert heat, without compromising performance.

3. Material & Construction Features

The 20R-0849 injector’s exceptional durability and performance are rooted in its premium materials and precision construction, specifically tailored to the C-aterpillar 3512B’s harsh operating environments. The quintuple heat-treated 2205 duplex stainless steel injector body with dual coating delivers superior corrosion resistance, making it ideal for offshore and marine applications exposed to saltwater and HFO. The triple-coated 316L stainless steel nozzle ensures anti-clogging performance and ultra-smooth fuel flow, even with low-quality fuels, while the reinforced FFKM seals guarantee zero leakage at max pressure. The ceramic-coated 2605N duplex steel plunger provides exceptional wear resistance, minimizing fuel dilution and ensuring stable pressure transmission. The quadruple-coated tungsten carbide nozzle tip withstands extreme heat and HFO erosion, while the heat-treated silicon chrome alloy spring maintains consistent elasticity, all combining to extend the injector’s service life and reduce maintenance needs.

4. Quality Testing & Quality Assurance

Quality is the foundation of the 20R-0849 injector, with every unit undergoing 100% rigorous testing before shipment to meet or exceed C-aterpillar’s OE standards. Using C-aterpillar OE-grade manufacturing equipment, the spray pattern test ensures ultra-fine, uniform atomization, optimizing combustion efficiency and reducing emissions. The 58 MPa pressure leakage test guarantees zero leakage, even under extreme temperatures and HFO/methanol exposure, ensuring reliable operation in harsh environments. The precision fuel delivery test ensures ±0.03% accuracy, with minimal variation across units, ensuring consistent engine performance. The durability test confirms the injector can withstand 4,500,000+ load cycles without performance degradation, while the 25% random sampling type inspection ensures consistent quality with a defect rate of ≤0.01%. Backed by a 48-month OE-compliant warranty (extendable to 72 months), the 20R-0849 provides customers with complete peace of mind and reliable after-sales support.

5. Installation & Operational Advantages

The 20R-0849 injector is designed for user-friendliness, reliability, and adaptability, perfectly suited to the C-aterpillar 3512B’s demanding operating conditions. Its 1:1 OE dimension match enables direct fit installation without modifications, and the included installation kit reduces time and labor costs, ensuring quick downtime recovery. With an IP68 rating, it is dust, vibration, shock, and waterproof, making it ideal for harsh environments like offshore, mining, and cold-climate industrial settings, reducing unplanned downtime by 50%. The triple-coated nozzle and wear-resistant components minimize maintenance needs, with an 18,000-hour maintenance interval that cuts long-term operational costs by 40%. 24/7 C-aterpillar-authorized technical support and a global spare parts network ensure prompt assistance, while its broad fuel compatibility and emission compliance make it suitable for global applications, avoiding regulatory penalties and supporting green operations.

In summary, the 20R-0849 Fuel Injector is a premium 100% new common rail injector exclusively designed for the C-aterpillar 3512B series engine, integrating advanced precision engineering, high-quality materials, and strict OE-level quality control. It delivers exceptional durability (4,500,000+ cycle life), ultra-precise fuel delivery (±0.03% deviation), and superior corrosion resistance, making it ideal for harsh environments involving HFO and corrosive substances. As the ideal replacement for worn or outdated injectors, it ensures optimal fuel delivery, improved engine performance, and extended service life, backed by a 48-month C-aterpillar-authorized warranty and comprehensive after-sales support. Its broad OE compatibility, direct fit design, enhanced fuel versatility, and emission compliance make it the top choice for marine propulsion, mining machinery, heavy-duty power generation, offshore platforms, and other industrial applications powered by the C-aterpillar 3512B engine.