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Factory Direct Durable FAW J5 J6 JH6 J7 1103010-50A Fuel Tank Cap

The Fuel Tank Cap Assembly (Part No. 1103010-Q205) is an original equipment (OE) component produced by FAW Jiefang for use on its heavy- and medium-duty commercial truck platforms. Designed as a critical sealing element of the vehicle’s fuel system, this cap ensures secure closure of the diesel fuel filler neck, preventing fuel leakage, vapor emissions, contamination, and pressure imbalances in the tank.

Constructed from high-strength engineering plastic with zinc-plated internal components and a NBR (nitrile rubber) sealing gasket, it delivers long-term resistance to diesel fuel corrosion, UV exposure, temperature extremes (-40°C to +85°C), and mechanical wear. It features an integrated dual-function breather valve — releasing excess internal pressure while allowing air intake during fuel consumption to prevent vacuum lock.
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  • 1103010-Q205

  • FAW

Attribute Description
Product Name Fuel Tank Cap / Filler Cap Assembly
Manufacturer FAW Jiefang Co., Ltd., China
Type Non-locking (standard), compatible with optional locking versions
Function Seals fuel tank opening; prevents leaks, evaporation, and foreign matter entry
Application Diesel fuel tanks on FAW J series trucks (steel or aluminum tanks)
Sealing Material Nitrile rubber (NBR) O-ring — highly resistant to diesel and aging
Valve Feature Built-in pressure/vacuum relief valve for automatic pressure balancing
Color Standard black (UV-stabilized)
Quality Standard Complies with FAW Q/FAW enterprise standards; tested for seal integrity, durability, and chemical resistance
燃油箱盖-3


燃油箱盖-2


Parameter Value / Detail
OEM Part Number 1103010-Q205
Alternate Variants - 1103010-Q205/B (supplier revision)
- 1103010-50AF (locking/keyed version)
- 1103010-240-0000 (alternate batch code)
Cap Type Twist-on, threaded design with bayonet-style locking mechanism
Thread Compatibility Matches standard FAW diesel fuel tank filler necks (M60×1.5 typical)
Material Composition - Outer Shell: Reinforced engineering plastic (ABS/PA-based)
- Internal Structure: Zinc-coated steel
- Seal: NBR rubber
Breather Valve Function Automatically regulates internal tank pressure:
- Releases at ~+3 psi (over-pressure)
- Intakes at ~–1 psi (under-vacuum)
Operating Temperature –40°C to +85°C
Fuel Resistance Resistant to diesel, biodiesel blends (B20), and common contaminants
Packaging Single unit per package (1 pc/box)
Weight Approx. 180–220 grams


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