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The WG9925565001+002 Locked Fuel Tank Cap is a premium, heavy-duty chassis component engineered specifically for SINOTRUK Howo trucks, delivering a secure, lockable seal for the diesel fuel tank that prevents fuel theft, contamination and spillage. As a trusted supplier of genuine Sinotruk howo parts, we offer this OEM-grade fuel tank cap as a direct replacement for the original factory component. The WG9925565001+002 combines a precision-machined locking cylinder, a durable fuel-resistant sealing gasket and a corrosion-resistant outer shell, ensuring a tight, leak-free fit on Howo A7, T7H and related heavy-duty models.
Manufactured from high-strength steel with a zinc-plated, anti-corrosion finish, the WG9925565001+002 is built to survive constant contact with diesel fuel, road salt, mud and extreme temperatures. Its keyed locking mechanism deters siphoning and unauthorised access, while the ergonomic grip allows quick opening and closing during refuelling. Every unit is dimensionally verified so that it threads smoothly onto the factory filler neck without cross-threading or looseness.
OEM WG9925565001+002 • Keyed locking cylinder • Fuel-resistant gasket • Zinc-plated finish • Direct OEM fit
The WG9925565001+002 Locked Fuel Tank Cap serves as the primary access point and protective barrier for the diesel fuel tank on SINOTRUK Howo commercial vehicles. It threads directly onto the fuel filler neck, creating an airtight seal that keeps dust, water and debris out of the fuel system while locking securely to deter siphoning and fuel theft. This makes it an essential chassis component for fleets operating in remote areas, construction sites and long-haul routes.
Manufactured from high-grade steel with a zinc-plated, corrosion-resistant finish, the WG9925565001+002 resists rust, fuel degradation and UV exposure. The internal rubber gasket is fuel-resistant and maintains its elasticity across a wide temperature range, guaranteeing a consistent seal even in extreme heat or freezing conditions. The locking barrel is protected against dust ingress, so the key turns smoothly after thousands of refuelling cycles.
Common signs that a fuel tank cap needs replacement include a missing or hardened gasket, a stiff or broken locking mechanism, a cap that no longer clicks tight, a persistent diesel smell around the filler neck, or fuel residue on the tank surface. Installing a new WG9925565001+002 restores proper sealing and protects the entire fuel system from contamination.
Whether you are replacing a lost cap, repairing a damaged filler assembly or carrying out scheduled fleet maintenance, the WG9925565001+002 Locked Fuel Tank Cap delivers the fit, security and durability that SINOTRUK Howo operators demand from a genuine chassis component.
The WG9925565001+002 Locked Fuel Tank Cap is designed for SINOTRUK Howo trucks, with primary compatibility across the A7, T7H, HOWO 371 and HOWO 380 series that use the standard factory fuel filler neck. It is a direct OE replacement, so no adapter, spacer or modification is required during installation.
This cap is especially valuable in applications where vehicles are parked overnight on unsecured sites, such as construction, mining, quarrying and long-haul logistics. A locked cap protects expensive diesel from theft, keeps rainwater and grit out of the tank, and helps maintain correct fuel system pressure so the engine runs cleanly.
When replacing the cap, it is good practice to inspect the filler neck for dents, rust or hardened residue and to check the fuel tank vent for blockage. The WG9925565001+002 is engineered to mate with the original filler neck geometry, ensuring an accurate seal and reliable locking action every time.
For fleets running multiple HOWO trucks, standardising on the WG9925565001+002 simplifies inventory and guarantees the correct cap is always available for routine service or emergency replacement.
Fitting the WG9925565001+002 is a straightforward task that can be completed in minutes. Park the vehicle on level ground, switch off the engine and allow the fuel system to settle. Wipe the filler neck clean with a lint-free cloth so that no grit is trapped between the new gasket and the sealing surface.
Insert the key, align the cap with the filler neck threads and turn it clockwise until you feel the ratchet or stop point. Remove the key, then tug gently on the cap to confirm it is locked. Start the engine and check for any diesel odour around the filler area, which would indicate a poor seal.
For ongoing maintenance, inspect the gasket at every oil service and replace the cap if the rubber is cracked, flattened or hardened. Lubricate the lock cylinder occasionally with a graphite-based product rather than oil, which attracts dust and can jam the pins over time.
Keep a spare key in a secure location, and never force the key if it binds. If the cap becomes difficult to turn, remove it, clean the threads and reinstall. Regular care ensures the WG9925565001+002 continues to seal correctly and lock reliably throughout its service life.
The WG9925565001+002 Locked Fuel Tank Cap is produced in an ISO 9001-certified facility using advanced stamping, machining, plating and assembly processes. Raw steel is sourced from certified suppliers and tested for hardness, thickness and chemical composition before production begins.
Each cap is dimensionally inspected to exacting tolerances. The thread profile is gauged for correct pitch, the locking cylinder is cycle-tested for smooth key operation, and the gasket is checked for correct hardness and elasticity. The zinc coating is verified for adhesion and salt-spray resistance.
Every batch undergoes functional testing, including sealing pressure checks and repeated lock-and-unlock cycles. Random samples are subjected to vibration, thermal cycling and fuel immersion tests to confirm long-term reliability in real-world heavy-duty operation.
We back the WG9925565001+002 with a comprehensive 12-month warranty against material and workmanship defects, so you can fit it with confidence and keep your fuel system properly sealed.
The WG9925565001+002 Locked Fuel Tank Cap is a small but vital chassis component that protects your fuel, your engine and your operating budget. A worn or missing cap allows water and grit into the tank, which can clog filters, damage the high-pressure pump and cause expensive downtime.
Built from high-strength zinc-plated steel with a fuel-resistant gasket and a dependable locking cylinder, the WG9925565001+002 offers outstanding durability, security and sealing performance. Its precision thread and ergonomic grip make refuelling quick and clean.
Fleet operators benefit from reduced fuel theft, fewer contamination-related repairs and simplified parts inventory. Owner-operators gain peace of mind knowing their diesel tank is properly sealed and locked with an OEM-grade component that meets strict quality standards.
Order the WG9925565001+002 Locked Fuel Tank Cap today and keep your SINOTRUK Howo fuel system secure, clean and reliable for years to come.
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