

The Engine Oil Fill Tube is a vital component that allows safe and efficient addition of engine oil to the lubrication system of the Sitrak C7H. This comprehensive kit includes the main oil filler tube, a flexible rubber hose, high-quality hose clamps, a mounting bolt, and a securing nut, ensuring a complete and reliable installation.
The Engine Oil Fill Tube is designed to provide a leak-free, convenient path for oil replenishment, preventing spills and ensuring that oil reaches the sump without contamination. Its robust construction and precise fitment guarantee long-term durability and resistance to the harsh engine environment. For complete technical specifications and ordering details, please refer to the official Sinotruk Catalog, which provides comprehensive information on all available variants and compatible truck models.
This Engine Oil Fill Tube kit is manufactured to exact OEM specifications, guaranteeing a perfect fit on the Sitrak C7H. Its integrated design ensures that oil is directed cleanly into the engine, reducing the risk of spills that could lead to environmental contamination or engine damage. The included flexible hose allows for easy routing, even in tight engine bays.
Whether you are performing routine maintenance or replacing a damaged oil filler neck, this Engine Oil Fill Tube kit delivers factory-quality components and a straightforward installation. This Engine Oil Fill Tube is the definitive choice for operators who demand reliable oil access and long-term durability.
The Engine Oil Fill Tube Assembly is the main component of this kit, consisting of a precision-formed steel tube that guides oil from the filler cap to the engine sump. It features a flared top end that accepts the oil filler cap securely and a lower end that connects to the flexible hose. The tube is manufactured from corrosion-resistant steel with a powder-coated finish that withstands oil, heat, and environmental exposure. In the Engine Oil Fill Tube system, this assembly provides a rigid, reliable passage for oil, ensuring that it is delivered directly to the oil pan without splashing or leaking.
Its design incorporates a venting feature that allows air to escape during filling, preventing pressure buildup and ensuring smooth oil flow. The tube’s length and curvature are optimized for the C7H engine bay, making installation straightforward and maintenance easy.
This flexible rubber hose connects the rigid oil fill tube to the engine block, accommodating slight misalignments and absorbing vibration. Made from oil-resistant NBR rubber with a fabric reinforcement, it can withstand continuous exposure to hot oil and engine temperatures up to 120°C. In the Engine Oil Fill Tube system, the hose provides a leak-free, flexible joint that compensates for engine movement and thermal expansion.
The hose’s inner diameter matches the tube and engine fitting, ensuring unrestricted oil flow. Its smooth bore prevents oil from pooling or creating turbulence, and its outer surface is resistant to abrasion and ozone cracking.
These high-quality hose clamps are used to secure the rubber hose to both the oil fill tube and the engine block connection. Manufactured from stainless steel with a worm-drive mechanism, they provide consistent clamping force that accommodates thermal expansion without loosening. In the Engine Oil Fill Tube system, two clamps are included to ensure a leak-free seal at both ends of the hose, preventing oil leaks that could cause mess or engine damage.
The clamps feature a smooth inner surface that prevents damage to the hose, and their durable construction resists corrosion from oil and road salt. Their 9mm band width offers excellent holding power while remaining easy to install with standard tools.
This high-strength M8 flange bolt is used to secure the oil fill tube bracket to the engine block. Manufactured from grade 10.9 alloy steel with a zinc-nickel coating, it provides exceptional clamping force and corrosion resistance. Its 20mm length is ideal for the mounting tab on the fill tube, and the integrated flange eliminates the need for a separate washer, simplifying installation. In the Engine Oil Fill Tube system, this bolt ensures that the assembly remains firmly attached, preventing vibration-induced loosening.
The bolt’s fine-pitch thread offers increased resistance to loosening, and its precise geometry ensures a perfect fit with the engine’s threaded boss.
This grade 8 hexagon nut is used in conjunction with the flange bolt to secure the fill tube bracket when a through-bolt configuration is required. It conforms to GB/T6170 standards and features a zinc-plated finish for corrosion resistance. In the Engine Oil Fill Tube system, this nut provides a reliable fastening that maintains the tube’s position even under severe vibration.
Its 8-grade strength ensures it can withstand the clamping forces needed for a secure attachment, and its standard hex shape allows for easy tightening with common hand tools.
The Engine Oil Fill Tube is engineered with precision seals and high-quality components that prevent oil leaks during filling. This keeps the engine bay clean and reduces the risk of oil contamination on belts and other components, ensuring long-term reliability.
This Engine Oil Fill Tube kit includes the fill tube assembly, rubber hose, clamps, mounting bolt, and nut – everything needed for a full installation. No additional parts are required, saving time and ensuring compatibility.
All components of the Engine Oil Fill Tube are manufactured from materials that resist oil, heat, and corrosion. The steel tube is powder-coated, the hose is oil-resistant rubber, and the fasteners are zinc-plated for long-lasting performance.
The Engine Oil Fill Tube is manufactured to the exact OEM specifications, guaranteeing a perfect fit on the Sitrak C7H. The pre-formed tube and correctly sized hardware ensure a hassle-free installation, reducing downtime and labor costs.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.