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Secure Fuel Management: AZ9112550213 Genuine SINOTRUK HOWO Fuel Tank Cap

PART NO.:
AZ9112550213
Part Name:
Fuel Tank Cap
Russian Name:
Крышка топливного бака

OEM AZ9112550213 The fuel tank cap is a critical chassis component that seals the fuel system, preventing contamination, fuel loss, and unauthorized access while maintaining proper tank pressure. The genuine SINOTRUK HOWO AZ9112550213 Fuel Tank Cap is an OEM‑grade component engineered for a perfect fit and long‑term durability. As a vital element of the trusted Sinotruk howo parts family, this fuel cap is crafted from high-strength, anti-corrosion materials to withstand harsh weather, road impacts, and fuel exposure—effectively protecting the fuel system from debris and moisture while ensuring a secure seal even during heavy-load operations.

AZ9112550213 Fuel Tank Cap English
🇬🇧 Fuel Tank Cap
AZ9112550213 Fuel Tank Cap Russian
🇷🇺 Крышка топливного бака
AZ9112550213 Fuel Tank Cap Spanish
🇪🇸 Tapa del depósito de combustible

Key Features of the SINOTRUK HOWO AZ9112550213 Fuel Tank Cap

Leak-Proof Sealing

The AZ9112550213 features a high-quality rubber gasket that provides an airtight seal, preventing fuel evaporation and leaks even under rough road conditions.

Secure Locking Mechanism

Integrated lock with robust tumblers deters theft and unauthorized access, requiring the truck’s ignition key for operation.

Pressure Equalization Valve

Built-in one-way valve allows tank pressure to equalize, preventing vacuum lock or pressure buildup while maintaining seal integrity.

Corrosion-Resistant Finish

Zinc-plated and coated with a durable top layer to resist rust, road salt, and fuel splash, ensuring long-lasting appearance and function.

Technical Specifications: AZ9112550213 Fuel Tank Cap

Parameter Specification Details
OEM Part NumberAZ9112550213SINOTRUK HOWO Original
Product NameFuel Tank CapLocking type with tether
MaterialZinc alloy body + EPDM gasketHigh-strength, anti-corrosion
Thread Size / TypeM90 x 2.0 (standard for Howo)External thread
Seal Diameter (inner)82 mmCompression fit
Lock TypeKey-operated, 6-pin tumblerKeys included (2 pcs)
Pressure ReliefIntegrated one-way valve0.2 bar cracking pressure
Weight~0.35 kgLightweight
Temperature Range-40°C to +80°CContinuous operation
Compatible ModelsHowo T7H, A7, 70 series, SteyrMost standard fuel tanks

Why the AZ9112550213 Fuel Tank Cap is Critical for Fuel System Integrity

The fuel tank cap may seem like a simple component, but it plays a vital role in maintaining fuel system integrity and safety. A faulty or missing cap can allow dirt and water to contaminate the fuel, leading to injector damage and engine performance issues. It also prevents fuel evaporation, saving money and reducing emissions. The genuine SINOTRUK HOWO AZ9112550213 cap is engineered with high-strength, anti-corrosion materials to withstand harsh weather, road impacts, and fuel exposure, ensuring a secure seal and reliable operation for the life of the truck.

Precision Manufacturing

The AZ9112550213 is produced using high-pressure die casting and CNC machining, ensuring precise thread fit and smooth locking mechanism. Each cap is assembled with stainless steel springs and hardened lock tumblers.

Rigorous Quality Control

Every batch of Sinotruk Howo Parts goes through strict testing against international standards (e.g., ISO, CE) and Sinotruk’s original specs. Caps are pressure-tested and cycled for lock durability, ensuring they endure harsh truck operations and deliver long-lasting performance.

The development of the AZ9112550213 Fuel Tank Cap focused on providing a durable and reliable seal under the most severe operating conditions. These caps are exposed to constant vibration, road debris, temperature extremes, and corrosive fuel. A failed cap can cause expensive fuel loss and contamination. This genuine component is engineered to maintain its sealing force and locking integrity for hundreds of thousands of kilometers.

The material formulation of the AZ9112550213 uses a high-grade zinc alloy body that resists impact and corrosion. The gasket is made from EPDM rubber, chosen for its excellent resistance to diesel, biodiesel, and gasoline, as well as its ability to remain flexible at low temperatures. The locking mechanism incorporates hardened steel pins to resist tampering and wear.

Quality control for the AZ9112550213 is exhaustive. In addition to 100% visual inspection, sample caps are tested for seal integrity under pressure, lock cycle durability (over 10,000 cycles), and salt spray corrosion resistance. Only components that pass all these rigorous checks are approved for shipment as genuine Sinotruk Howo parts.

A failing fuel tank cap can cause a range of issues. Symptoms include the smell of fuel around the truck, the check engine light illuminating due to evaporative system leaks (if equipped), difficulty unscrewing the cap, or visible rust on the cap. During regular maintenance, the cap should be inspected for any signs of gasket cracking, lock sticking, or corrosion. If any issues are found, immediate replacement with a genuine AZ9112550213 cap is recommended to prevent fuel loss and contamination.

Installation is simple and user-friendly. The old cap is unscrewed, and the new AZ9112550213 is screwed on until it clicks (indicating proper seal). Ensure the tether is attached to the fuel filler neck to prevent losing the cap during refueling. This straightforward replacement helps technicians cut down on repair time and get Howo trucks back on the road faster.

Field performance of the AZ9112550213 cap has proven its exceptional reliability. In a study of 200 Howo trucks operating in diverse climates, none showed signs of seal failure or lock malfunction within 5 years of service. This reliability translates directly to reduced downtime and lower operating costs for fleet operators.

For parts managers, the AZ9112550213 fuel tank caps are available individually, each with a lot traceability label and two keys. Bulk orders (10+ units) receive additional packaging discounts and priority handling. The caps are packaged in individual boxes with foam inserts to prevent transit damage.

Warranty and support for the AZ9112550213 are comprehensive. SINOTRUK HOWO provides a 2‑year/unlimited mileage warranty against manufacturing defects. Our technical support team is available via email to answer any questions regarding installation or compatibility, and we are committed to providing a response within 24 hours.

When ordering, always verify your truck model and fuel tank neck size. The AZ9112550213 is designed for the standard Howo fuel tank with M90 thread; some special variants may differ. Using the correct part ensures a perfect fit and optimal sealing performance.

In summary, the AZ9112550213 Fuel Tank Cap is a vital component for ensuring the security, efficiency, and environmental compliance of your SINOTRUK HOWO truck’s fuel system. Its premium materials, precision manufacturing, and rigorous testing make it the preferred choice for fuel caps. Trust the genuine AZ9112550213 – it seals your fuel with confidence.

Maintenance Best Practices

Inspect the fuel cap gasket for cracks or hardening every oil change. Ensure the cap clicks when tightened. If the cap is difficult to turn or the lock sticks, replace it promptly with a genuine AZ9112550213 to avoid seal failure.

The OEM Advantage

Generic aftermarket caps often have poor gasket material, inaccurate thread fit, or weak locks, leading to leaks and security risks. The genuine AZ9112550213 is engineered to exact specifications with premium materials, ensuring a perfect fit and reliable performance, backed by factory-direct prices and customization options if needed.

Why OEM Quality Matters: The AZ9112550213 Advantage

Generic aftermarket fuel tank caps often have poor gasket materials, inaccurate thread fit, or weak locking mechanisms, leading to leaks, fuel contamination, and security risks. The genuine SINOTRUK HOWO AZ9112550213 Fuel Tank Cap is engineered to the exact specifications of your truck’s fuel system. It is manufactured under strict quality controls, undergoing rigorous testing against international standards (e.g., ISO, CE) and Sinotruk’s original specs. Using premium materials and precision manufacturing ensures it withstands the extreme demands of heavy‑duty operation, delivering consistent performance and long life. This commitment to quality, combined with options for customization and small order acceptance, makes it the smart choice for maintaining your Howo truck.

By choosing the authentic part, you protect your investment and ensure your fuel system remains secure and efficient for years to come. For fleet managers and owner‑operators who demand the best, the genuine AZ9112550213 is the only responsible choice.


AZ9112550213 – 100% Genuine SINOTRUK HOWO Fuel Tank Cap • Secure your fuel with confidence • No forms, just quality parts.

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