The fuel injection pump is the heart of your diesel engine’s fuel system, responsible for delivering precisely metered fuel to the injectors at the exact moment for optimal combustion. The 1001670322 Fuel Injection Pump Assembly from HOWO is engineered to deliver exceptional pressure stability, precise fuel metering, and long-lasting durability, ensuring that your engine produces maximum power while maintaining fuel efficiency and emissions compliance. As a critical Howo/Sitrak truck parts component, this fuel injection pump assembly is manufactured from high-grade alloy steel with precision-ground internal components, featuring advanced pressure regulation and a robust gear-driven design that withstands the most demanding operating conditions. Whether you are rebuilding an engine or replacing a worn pump, the 1001670322 guarantees a perfect factory fit, consistent fuel delivery, and reliable performance – making it the trusted choice for professional workshops and fleet operators worldwide.
The fuel injection pump is responsible for generating the high pressure needed to atomise diesel fuel for efficient combustion. The 1001670322 is specifically designed to deliver consistent fuel pressure across all engine operating conditions, ensuring that your HOWO engine produces maximum power while maintaining fuel efficiency and meeting emissions standards. A failing injection pump can lead to hard starting, rough idle, black smoke, reduced power, and increased fuel consumption – symptoms that can quickly escalate into costly repairs if left unaddressed[reference:0]. HOWO has engineered this pump assembly with precision-ground plungers and delivery valves that maintain tight clearances (fit clearance ≤ 0.003mm)[reference:1], ensuring minimal internal leakage and consistent fuel delivery across all cylinders. The robust alloy steel construction and corrosion-resistant surface finish ensure long-term reliability, even in the harsh environments of heavy-duty trucking[reference:2]. With the 1001670322, you restore the original fuel delivery performance of your engine, protecting your investment and ensuring reliable operation for thousands of miles.
High Pressure
Up to 300 bar
Precision
±0.01mm tolerance
OEM Fit
Exact Replacement
Durable
Alloy Steel
The 1001670322 fuel injection pump assembly is manufactured to the highest OEM standards, incorporating advanced materials and precision engineering. Below are the complete technical specifications for this essential fuel system component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 1001670322 | Exact Match |
| Part Name | Fuel Injection Pump Assembly | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / MC11/MC13 | Diesel fuel injection |
| Material | Alloy steel + precision components[reference:3] | Corrosion-resistant |
| Pressure Range | 200–300 bar[reference:4] | Adjustable high-pressure |
| Drive Type | Engine gear driven[reference:5] | Synchronous rotation |
| Plunger Clearance | ≤ 0.003 mm[reference:6] | Precision ground |
| Temperature Range | -40°C to +150°C[reference:7] | Extreme duty |
| Fuel Type | Diesel | Common rail / mechanical |
| Weight | 18–30 kg[reference:8] | Complete assembly |
| Warranty | 12 Months | Manufacturer Guarantee |
The 1001670322 fuel injection pump assembly is produced using advanced CNC machining and precision grinding techniques, ensuring that every component meets the strictest tolerances. The internal plungers and delivery valves are precision-ground to fit with clearances of less than 0.003mm, minimising internal leakage and ensuring consistent fuel delivery across all engine speeds and loads[reference:9]. The pump body is manufactured from high-grade alloy steel with a corrosion-resistant coating, providing excellent durability and heat resistance in the harsh under-hood environment[reference:10]. The assembly features an adjustable high-pressure output ranging from 200 to 300 bar, allowing for precise pressure regulation to match the specific requirements of your engine[reference:11]. The gear-driven design ensures perfect synchronisation with the engine’s crankshaft, enabling precise injection timing and optimal combustion efficiency[reference:12]. Each pump assembly is factory-tested for pressure stability, flow rate, and leak integrity, guaranteeing that the 1001670322 meets HOWO’s stringent quality standards. This meticulous engineering ensures that your engine receives the precise fuel delivery it needs for maximum power, fuel efficiency, and emissions compliance.
The 1001670322 fuel injection pump assembly is specifically designed for HOWO heavy-duty trucks equipped with MC11 or MC13 engines, including T7H, A7, and derivative models. It directly replaces the original pump with identical mounting flange dimensions, gear drive interface, and fuel line connections, ensuring a straightforward installation without modifications[reference:13]. The pump is compatible with both mechanical and electronic fuel systems, and it works seamlessly with the existing fuel filter and injector components. This pump assembly is also compatible with many Sinotruk and other commercial vehicles that share the same engine architecture. To confirm fitment, always cross-reference the OEM number on your existing pump with 1001670322. If they match, this component will integrate seamlessly. Keeping this pump in your spare parts inventory enables rapid fuel system repairs, minimising downtime and preserving the performance and reliability of your engine.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
MC11/MC13
Engine Series
Direct Replacement
No Modifications
Replacing a worn or failing fuel injection pump with the 1001670322 immediately restores the fuel delivery performance of your engine. The precise pressure regulation and tight internal clearances ensure consistent fuel delivery across all operating conditions, resulting in improved throttle response, smoother acceleration, and a noticeable increase in power output. The reduced internal leakage also translates to better fuel efficiency, as more of the fuel pumped is actually delivered to the injectors rather than being wasted through internal bypass. The robust construction and high-quality materials ensure that the pump maintains its performance over time, reducing the risk of fuel system failures and costly downtime. For fleet operators, a reliable fuel injection pump reduces maintenance costs, improves fuel economy, and helps maintain the performance and reliability of your vehicles. By investing in the 1001670322, you ensure that your HOWO engine delivers the power, efficiency, and reliability that professional drivers and fleet operators depend on.
Installing the 1001670322 fuel injection pump assembly is a complex procedure that should be performed by a qualified technician with the appropriate tools and experience. Begin by safely depressurising the fuel system and disconnecting the battery. Remove the old pump by carefully disconnecting the fuel lines, unbolting the mounting flange, and disengaging the drive gear from the crankshaft gear[reference:14]. Thoroughly clean the mounting surface and inspect the drive gear and timing marks for correct alignment. Install the new pump, ensuring that the gear is properly meshed and the timing marks are aligned. Torque the mounting bolts to the manufacturer’s specification and reconnect all fuel lines, using new O-rings and sealing washers where necessary[reference:15]. Prime the fuel system and check for leaks before starting the engine. After startup, verify the fuel pressure and timing using a diagnostic tool and adjust if required. Periodically check the pump for external leaks and change the fuel filter at recommended intervals. With proper installation and maintenance, the 1001670322 will provide years of reliable, high-pressure fuel delivery.
Pro Tip: When replacing the fuel injection pump, always use new O-rings and sealing washers[reference:16]. Contamination is a leading cause of pump failure; ensure that all fuel lines and fittings are spotlessly clean before reassembly. The 1001670322 is designed to work with clean, high-quality diesel fuel; using contaminated fuel can damage the precision-ground internal components.
Genuine HOWO components are engineered to the highest standards, and the 1001670322 fuel injection pump assembly is no exception. Aftermarket pumps often use inferior materials, lower-grade bearings, or imprecise internal clearances, leading to pressure fluctuations, premature wear, and injector damage. HOWO’s pump is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 1001670322, you benefit from HOWO’s rigorous testing, including pressure cycling, endurance, and contamination resistance tests. This ensures that the pump meets the demanding requirements of heavy-duty trucking. Moreover, genuine parts are backed by a comprehensive warranty and supported by HOWO’s global network, giving you confidence in your purchase.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the 1001670322 fuel injection pump assembly?
A: The 1001670322 is designed for HOWO T7H, A7, and other models with MC11/MC13 engines, as well as many Sinotruk trucks with the same fuel system architecture.
Q: What are the symptoms of a failing fuel injection pump?
A: Hard starting, rough idle, black smoke, loss of power, increased fuel consumption, and injector malfunction are common indicators[reference:17].
Q: Does the pump come with the drive gear?
A: The 1001670322 includes the pump assembly only. The drive gear is typically reused from the original installation; inspect it for wear and replace if necessary[reference:18].
Q: How do I verify the correct part?
A: Check the OEM number on your existing pump. If it matches 1001670322, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 1001670322 Fuel Injection Pump Assembly today! Explore our complete selection of genuine HOWO and Sinotruk fuel system components at Howo/Sitrak truck parts and keep your engine delivering the power and efficiency it was designed for.
The 1001670322 Fuel Injection Pump Assembly from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that your truck’s fuel system delivers the consistent, high-pressure fuel required for optimum combustion, maximum power, and superior fuel efficiency. Whether you are a professional mechanic or a fleet manager, this pump offers the performance, durability, and exact fit required for modern heavy-duty trucks. Trust HOWO – the benchmark for excellence in heavy-duty truck components – and experience the difference that genuine quality makes.
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