- ADDRESS：Wanda Plaza, Jinan, Shandong, China
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
B7304-1009001 is the genuine Sinotruk Howo Oil Sump Gasket designed for the engine lubrication system of heavy‑duty trucks. As a vital component of the trusted Sinotruk Howo parts family, this gasket ensures a perfect seal between the oil pan and engine block, preventing oil leaks and maintaining stable oil pressure. Manufactured from high‑grade NBR with fibre reinforcement, the B7304-1009001 withstands extreme temperatures, vibration, and prolonged contact with lubricants, guaranteeing reliable performance in the most demanding chassis and engine applications.
The B7304-1009001 sump gasket is compression‑molded from a high‑grade NBR (Nitrile Butadiene Rubber) compound reinforced with aramid fibres. This proprietary blend meets or exceeds the mechanical properties required for heavy‑duty diesel engines. It offers exceptional resistance to engine oils, diesel fuel, and coolant, while maintaining flexibility at low temperatures and resisting hardening under continuous heat.
Dimensional accuracy is critical for a proper seal. The B7304-1009001 gasket is manufactured with a thickness of 1.5 mm (±0.1 mm) and precisely cut to match the oil pan flange of Howo engines. The profile includes strategically positioned bolt holes and alignment tabs, ensuring quick and foolproof installation without the risk of misalignment.
The B7304-1009001 compound is rated for continuous service from -40°C to +130°C, with short excursions up to +150°C. This wide temperature range ensures reliable sealing during cold starts and under extreme operating loads. The material retains more than 85% of its original tensile strength after 1000 hours of immersion in hot engine oil (ASTM Oil No. 2).
With a tensile strength ≥12 MPa and elongation at break ≥350%, the B7304-1009001 gasket can accommodate minor flange irregularities and thermal expansion without tearing. Its compression set is less than 20% after 22 h at 125°C, ensuring long‑term bolt torque retention and leak‑free operation over thousands of service hours.
The B7304-1009001 gasket is primarily used to seal the oil pan to the engine block in Howo T5G, T7H, and A7 series trucks. It prevents oil leaks that could lead to low oil pressure, engine damage, or environmental contamination. The gasket’s shape matches the stamped steel or cast aluminium oil pans found on these models.
Beyond the engine, the B7304-1009001 sealing profile is also utilised in certain hydraulic reservoir applications where a similar flange size is present. Its oil and vibration resistance make it suitable for gearbox sumps and transfer cases, though always verify the original application.
In the chassis domain, this gasket ensures that no oil weeps from the engine’s lower end, keeping the underbody clean and reducing fire risk. Regular replacement of the B7304-1009001 during oil pan removal is mandatory to maintain warranty and avoid repeat labour.
Before fitting a new B7304-1009001, thoroughly clean the oil pan flange and engine block surface. Remove all old gasket material and ensure no nicks or deep scratches exist. Apply a thin, even film of assembly lubricant or clean engine oil to the gasket to help it seat without twisting during torque‑down.
Always follow the prescribed bolt tightening sequence and torque values (typically 22‑25 Nm for M8 bolts). After the first heat cycle, a re‑torque may be beneficial. Inspect the B7304-1009001 during every oil change for signs of hardening or extrusion. Replace immediately if any leakage is observed.
Genuine Sinotruk Howo parts like the B7304-1009001 are engineered to the exact flange geometry and compression requirements of Howo engines. Non‑genuine gaskets often use inferior rubber that hardens quickly or shrinks, causing leaks within months. The authentic B7304-1009001 maintains its sealing force for over 500,000 km under normal conditions, preventing oil starvation and costly engine repairs. By choosing genuine, you also ensure the gasket’s compliance with original equipment tolerances, which is essential for warranty retention and safety.
The B7304-1009001 sealing ring may appear simple, but its role in the lubrication system is critical. Any leak here reduces oil volume, increases friction, and can lead to catastrophic engine failure. Moreover, oil dripping onto hot exhaust components poses a fire hazard. That is why experienced fleet managers insist on genuine B7304-1009001 gaskets. They are part of a comprehensive range of Sinotruk Howo parts that guarantee the longevity and reliability of your truck.
The B7304-1009001 gasket directly replaces the original oil pan seal on Howo models equipped with MC11 (Euro‑5/Euro‑6) and WD615 series engines. It is also compatible with certain Sinotruk SITRAK platforms. Always confirm engine type and oil pan part number before ordering. The gasket’s profile includes 18 bolt holes with a centre distance of 112 mm between the rear main seal carrier and front cover.
Each B7304-1009001 is individually packaged with a protective liner to prevent contamination. The package includes a small sachet of assembly lubricant for professional installation. For bulk orders, the gaskets are supplied in sealed polybags with the OEM logo and barcode for easy traceability.
Production of the B7304-1009001 follows strict ISO 9001 and IATF 16949 quality standards. Each batch is tested for hardness, tensile strength, and oil resistance before release. The gasket meets the requirements of Sinotruk’s engineering specification no. WG2203100254 (reference), guaranteeing identical performance to the component fitted on new trucks at the Jinan factory.
We are a first-class heavy duty vehicles and spare parts supplier in China. which covers from engine, gearbox, cab, axle assemblies to main assembly accessories, electrical parts and other chassis parts like brake, clutch and steering parts.
A PROFESSIONAL CHINA TRUCK AND SPARE PARTS SUPPLIER
@Copyright DERUNA
