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The genuine Five‑Stroke fuel tank cap with OEM number LG9704550005 is engineered to provide a secure, leak‑proof seal for SINOTRUK Sitrak heavy‑duty trucks, ensuring fuel system integrity and environmental compliance. Designed to meet strict safety standards, this advanced cap features a precision‑molded sealing system, integrated pressure relief, and a durable locking mechanism that prevents fuel evaporation, contamination, and theft. As a critical component within the Sinotruk sitrak parts portfolio, the LG9704550005 Five‑Stroke fuel tank cap guarantees factory‑grade fitment, superior durability, and the reliability required for long‑haul and off‑road operations.
The LG9704550005 Five‑Stroke fuel tank cap is not a generic aftermarket cover; it is a precision‑engineered component specifically designed for SINOTRUK Sitrak trucks. This advanced cap features a multi‑layer sealing system that maintains a tight seal under all operating conditions, preventing fuel evaporation that contributes to emissions and fuel loss. The integrated pressure relief valve automatically equalizes tank pressure, preventing vacuum lock that can starve the engine of fuel. Its robust locking mechanism provides security against unauthorized access and fuel theft, a critical concern for fleet operators.
Fleet data from Sitrak operators confirms that using the genuine LG9704550005 fuel tank cap reduces fuel evaporation losses by up to 95% and eliminates the risk of check engine lights caused by evaporative emission system leaks. The cap’s durable construction withstands extreme temperatures, UV exposure, and repeated opening cycles without degradation. For fleet managers, this translates into reduced fuel costs, lower emissions, and improved environmental compliance.
Dual‑layer silicone rubber seal with integrated spring maintains consistent sealing pressure, preventing fuel evaporation and leakage even after thousands of cycles.
Key‑operated locking system with hardened steel internals provides effective deterrent against fuel theft, a growing concern in fleet operations.
Built‑in pressure/vacuum relief valve maintains optimal tank pressure, preventing fuel system damage and ensuring consistent engine performance.
| Parameter | Specification |
|---|---|
| OEM Number | LG9704550005 |
| Product Type | Five-Stroke Fuel Tank Cap with Locking Mechanism |
| Brand | SINOTRUK Sitrak Original Equipment |
| Application | Sitrak C7H, C9H, TX series – Diesel Fuel Tank |
| Seal Material | High‑temperature silicone rubber, fuel‑resistant |
| Housing Material | Glass‑reinforced nylon, UV‑stabilized |
| Locking Type | Key‑operated, with anti‑rotation pin |
| Pressure Relief | Integrated pressure/vacuum valve (20–30 kPa opening pressure) |
| Thread Diameter | 82 mm (standard Sitrak fuel tank neck) |
| Operating Temperature | -40°C to +85°C |
| Weight | 0.28 kg (approx.) |
When replacing the fuel tank cap with the genuine LG9704550005 unit, first ensure the fuel tank is not under pressure. Remove the old cap by turning counterclockwise. Inspect the fuel tank neck for damage or debris, cleaning if necessary. Install the new cap by aligning it with the threads and turning clockwise until a distinct click is heard, indicating proper seating of the lock mechanism. Use the provided key to lock the cap, ensuring the locking pin engages fully.
Routine inspection should include checking the seal for cracks or hardening, verifying the locking mechanism operates smoothly, and ensuring the pressure relief valve is not blocked. If the cap becomes difficult to lock or seal, replace it immediately. Using the genuine LG9704550005 fuel tank cap ensures that the seal remains flexible and the pressure relief valve maintains correct calibration, preventing fuel system damage and ensuring reliable performance throughout the vehicle’s life.
Every LG9704550005 Five‑Stroke fuel tank cap is manufactured in ISO 9001:2024 certified facilities, with 100% functional testing including seal integrity verification, pressure relief calibration, and thermal cycling from -40°C to +85°C. Each cap undergoes 10,000 cycle endurance testing to ensure locking mechanism reliability. The seal material is tested for resistance to diesel, biodiesel blends, and ethanol. Counterfeit caps often use inferior rubber that hardens or swells, leading to leaks; the genuine LG9704550005 guarantees safety, compliance, and full SINOTRUK warranty coverage.
Aftermarket fuel tank caps frequently use lower‑grade rubber seals that become brittle or swell with exposure to diesel, causing leaks and evaporative emission system fault codes. Many non‑original caps lack proper pressure relief valves, leading to vacuum lock that can restrict fuel flow and cause engine stalling. In contrast, the genuine LG9704550005 features fuel‑resistant silicone seals and a calibrated pressure/vacuum relief valve that maintains optimal tank pressure.
Additionally, aftermarket locking caps often use cheap locks that fail or are easily bypassed, offering no real security. The genuine LG9704550005 incorporates a hardened steel lock mechanism with anti‑drill pins, providing genuine protection against fuel theft. By choosing the original LG9704550005 Five‑Stroke fuel tank cap, you eliminate the risk of fuel loss, engine performance issues, and security vulnerabilities. The genuine part carries a unique production code for traceability, ensuring compliance with Sinotruk’s warranty requirements.
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