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Maintaining a sealed and contamination-free fuel system is fundamental for the performance and longevity of any commercial vehicle, and it starts with selecting authentic Foton truck parts. The 1124111100003 Bouchon Reservoir Gasoil, or Diesel Tank Cap, is a genuine OEM component engineered specifically for FOTON trucks. This critical part serves as the primary seal for the diesel fuel tank, preventing the ingress of contaminants like dust, water, and debris while ensuring proper tank venting and pressure management. Precision-manufactured to exact factory specifications, the 1124111100003 cap guarantees a perfect fit, robust security, and reliable performance, making it an essential item for fleet managers and owner-operators focused on preventative maintenance and operational safety.
Bouchon Reservoir Gasoil (Diesel Tank Cap)
Крышка топливного бака дизеля
Tapa del Depósito de Gasóleo
The 1124111100003 Bouchon Reservoir Gasoil is a genuine OEM fuel tank cap designed for the diesel reservoirs of FOTON commercial trucks. Far more than a simple lid, this component is an integrated part of the vehicle’s fuel management system. Its primary function is to create an airtight, yet properly vented, seal on the tank’s filler neck. This prevents the escape of fuel vapors, which is crucial for emissions control and safety, while also blocking the entry of external contaminants that could compromise fuel quality and damage sensitive engine components like fuel injectors and pumps.
Constructed from high-quality, fuel-resistant materials such as specialized polymers or coated metals, the 1124111100003 cap is built to withstand constant exposure to diesel fuel, UV radiation, and wide temperature fluctuations. It typically features a robust threading mechanism that ensures a secure, leak-proof closure, along with a gasket or O-ring that maintains the seal even under vibration and movement. For operators in industries like logistics, construction, and agriculture, where vehicles are exposed to dusty or wet conditions, the integrity provided by the 1124111100003 is non-negotiable for preventing costly fuel system contamination.
Furthermore, many 1124111100003 caps include a tether chain to prevent loss and a locking mechanism or a design that requires the fuel nozzle to depress a valve for filling, enhancing safety and security. Using the genuine 1124111100003 cap ensures compatibility with the tank’s filler neck threads and venting requirements, maintaining the system as designed by FOTON engineers.
The 1124111100003 cap features a precision-engineered gasket that creates a robust seal against water, dust, dirt, and other particulates, ensuring only clean fuel reaches the engine and preventing abrasive damage.
This OEM cap is designed with the correct venting characteristics for FOTON tanks, allowing air to enter as fuel is consumed and vapors to expand safely, preventing vacuum lock or excessive pressure build-up.
Often incorporating a locking feature or requiring a specific tool (fuel nozzle) to open, the 1124111100003 helps prevent fuel theft and unauthorized access, a critical concern for fleet security.
Additional advantages include excellent chemical resistance, ensuring the 1124111100003 cap’s materials do not degrade when in constant contact with diesel and additives. Its ergonomic design allows for easy hand-tightening, while a tether chain prevents it from being misplaced or dropped into dirty environments during refueling. By maintaining the fuel tank’s internal environment, the genuine 1124111100003 cap directly contributes to optimal engine performance, reduced filter clogging, and lower long-term maintenance costs.
| Parameter | Specification | Description |
|---|---|---|
| OEM Part Number | 1124111100003 | Genuine FOTON Identification Code |
| Product Name | Bouchon Reservoir Gasoil | Diesel Fuel Tank Cap |
| Compatible Brand | FOTON Trucks | Commercial Vehicle Manufacturer |
| Primary Material | Fuel-Resistant Polymer / Coated Metal | Durable & Chemical Resistant |
| Sealing Element | Integrated Gasket or O-Ring | Ensures Airtight, Contaminant-Proof Seal |
| Thread Type | Model-Specific (e.g., M45x1.5) | Precise Match to FOTON Tank Filler Neck |
| Venting Type | Integrated Pressure/Vacuum Relief | Maintains Proper Tank Pressure |
| Security Feature | Locking Mechanism or Tethered Design | Prevents Loss & Deters Fuel Theft |
| Operating Temperature | -30°C to +100°C | Wide Range for Various Climates |
| Application | Diesel Fuel Tank Filler Neck | Primary Seal for Fuel Reservoir |
The 1124111100003 Bouchon Reservoir Gasoil performs several vital functions beyond simply closing the tank. Its most critical role is contamination prevention. Water ingress is a primary concern, as even small amounts of water in diesel fuel can promote microbial growth (diesel bugs), corrode fuel system components, and, in cold climates, freeze and block fuel lines. The seal provided by the 1124111100003 cap is the first and most important defense against this.
Secondly, it manages tank pressure. As fuel is consumed, a vacuum can form, potentially collapsing the tank or causing fuel pump strain. Conversely, fuel expansion in heat can create excessive pressure. The 1124111100003 is designed with specific venting to allow a balanced exchange of air, preventing these issues and ensuring smooth fuel delivery to the engine.
Furthermore, the cap contributes to emissions control by containing fuel vapors, aligning with environmental regulations. A faulty or missing cap allows hydrocarbons to escape into the atmosphere. For fleet compliance and operational efficiency, ensuring every truck is equipped with a fully functional, genuine 1124111100003 diesel cap is a simple yet profoundly impactful maintenance practice.
Step 1: Ensure the filler neck area is clean and free of debris before installing the new cap.
Step 2: Inspect the new 1124111100003 cap’s gasket for any defects and ensure it is properly seated.
Step 3: Align the cap threads with those of the filler neck and rotate clockwise by hand until snug. Avoid over-tightening with tools, which can damage threads or warp the seal.
Step 4: If equipped, secure the tether chain and test any locking mechanism to ensure proper operation.
• Visual Check: Look for cracks, warping, or significant wear on the 1124111100003 cap body during daily walk-around inspections.
• Gasket Condition: Regularly examine the sealing gasket for brittleness, tears, or permanent compression. Replace the cap if the gasket is compromised.
• Seal Integrity: After refueling, check for any signs of fuel odor near the cap or moisture/dirt inside the filler neck, indicating a poor seal.
• Threads: Inspect both the cap and filler neck threads for damage, stripping, or cross-threading that could prevent a tight seal.
Maintenance of the 1124111100003 is straightforward but essential. Keep the cap and filler neck clean. If the cap becomes dirty, wash it with mild soap and water—avoid harsh solvents that could degrade the gasket material. It is recommended to proactively replace the fuel cap every few years or 100,000 miles as part of preventative maintenance, as seals can degrade over time even without visible damage.
Selecting the authentic 1124111100003 cap over universal or counterfeit alternatives is a decision that impacts fuel system health, safety, and compliance. The primary advantage is guaranteed fit and function. The genuine cap has threads engineered to match the FOTON filler neck exactly, ensuring a proper seal. An ill-fitting cap can cross-thread, fail to seal, or even become stuck.
Secondly, material and venting specifications are critical. The genuine 1124111100003 uses materials certified for prolonged contact with diesel fuel. More importantly, its pressure/vacuum relief valve is calibrated to the specific requirements of FOTON fuel systems. An incorrect venting rate from a generic cap can cause performance issues or even tank damage.
Using the OEM 1124111100003 also ensures emissions compliance and helps avoid fault codes related to the evaporative emissions system. From a cost perspective, the investment in a genuine cap protects against the far greater expense of repairing water-damaged fuel injectors, replacing clogged filters, or addressing fuel pump failures caused by contamination.
In essence, the 1124111100003 is a low-cost, high-impact component. Choosing the genuine part is a simple yet effective strategy for safeguarding one of the truck’s most critical systems, ensuring reliable operation and minimizing unscheduled downtime.
A: The genuine OEM part number is 1124111100003, also known as the Bouchon Reservoir Gasoil. Always confirm this number for compatibility with your specific FOTON truck model.
A: Signs include a persistent fuel smell near the tank, difficulty refueling (pressure build-up causing pump nozzle to click off), the illumination of a Check Engine light for an evaporative emissions system leak, or visible water/dirt contamination in the fuel filter.
A: There’s no fixed interval, but it is wise to inspect it at every service. Consider preventive replacement every 2-3 years or 100,000 miles, as the sealing gasket can lose elasticity over time, compromising the seal even if the cap looks fine.
A: Absolutely. An incorrect cap that doesn’t seal allows contamination and can cause the engine to run poorly. A cap with improper venting can lead to fuel delivery issues, tank deformation, and trigger dashboard warning lights related to the fuel system.
The 1124111100003 Bouchon Reservoir Gasoil is a fundamental yet vital OEM component that ensures the integrity, safety, and efficiency of the fuel system in FOTON trucks. Its role in preventing contamination, managing tank pressure, and controlling emissions is indispensable for reliable vehicle operation and compliance with modern standards.
Investing in the genuine 1124111100003 cap is a proactive and cost-effective maintenance strategy. It protects significant downstream investments in the engine’s fuel injection system, reduces the risk of unexpected breakdowns, and contributes to optimal fuel economy. This small part delivers substantial value in protecting one of the vehicle’s most critical systems.
Make the inspection of the 1124111100003 diesel cap a routine part of your vehicle checks and replace it with the authentic OEM part at the first sign of wear. This simple practice is a hallmark of professional fleet management and ensures your FOTON truck continues to perform reliably mile after mile.
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