Searching for a reliable source for your heavy equipment fuel system? We specialize in providing the 861781 (861-781) and 07050-41200 (0705041200) diesel tank caps. These are high-performance, OEM-standard components specifically engineered for the CAT E200B Excavator and Komatsu PC series machines, ensuring maximum fuel security and contamination prevention on any job site.
| Item Details | Specifications |
|---|---|
| Model NO. | CAT E200B / Komatsu PC Series |
| Product Name | Diesel Fuel Tank Cap / Locking Fuel Cap |
| Part Number 1 | 861-781 / 861781 (CAT Application) |
| Part Number 2 | 070-504-1200 / 0705041200 / 07050-41200 (Komatsu Application) |
| Condition | Brand New, OEM Standard Replacement |
| Type | Engine Fuel System Components |
| Stock Status | In Stock / Fast Dispatch within 24 Hours |
| MOQ | 1 Piece |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL, Fedex, EMS, UPS or by Air/Sea |
| Application | Engine rebuild, overhaul, routine maintenance |
| Feature | Standard Market Cap | Our OEM-Standard Cap |
|---|---|---|
| Material Grade | Generic Recycled Plastic/Metal | High-Strength Corrosion-Resistant Alloy |
| Sealing Integrity | Standard Rubber Seal | Chemical-Resistant Viton/Premium Polymer |
| Fitment Precision | Approximate Fit | 1:1 Precise Part Number Match (861781 / 07050-41200) |
| Locking Mechanism | Weak Internal Springs | Reinforced Anti-Theft Lock Design |
| Pressure Venting | No Venting or Poor Flow | Dual-Way Breathing Valve for Fuel Flow Safety |
| Service Life | 6-12 Months | Heavy-Duty Construction for Multi-Year Use |
A faulty fuel cap is more than just a missing lid; it leads to fuel contamination and vacuum locks that stall your engine. Our team helps operators:
Identify potential risks during maintenance such as debris entering the fuel pump.
Recommend suitable replacement parts if needed for various Caterpillar or Komatsu models.
Support both inspection advice and parts supply for major engine overhauls.
Common Symptoms of a Failing Tank Cap: Unusual vacuum pressure when opening the tank, fuel leaks around the neck, or dust accumulation inside the fuel filter.
Question: Why is my CAT E200B engine losing power intermittently?
Answer: One overlooked cause is a clogged vent in your 861781 fuel cap. If the cap cannot breathe, it creates a vacuum in the tank, preventing the diesel pump from drawing fuel efficiently. Replacing it with a fresh OEM-standard cap often solves the issue.
Question: How to ensure 07050-41200 fits my Komatsu PC excavator?
Answer: This part number is a universal standard for various PC-series machines. Always check the neck diameter. Our replacement 07050-41200 is built to exact factory specs for a leak-proof seal.
Question: Why Choose This Diesel Tank Cap?
Answer: It features an OEM-standard tri-metal structure and is trusted by repair shops and equipment fleets worldwide for its durability in harsh environments.
We specialize in comprehensive engine solutions for global brands. Our core inventory includes complete engine assemblies and spare parts for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. From a simple fuel cap to complex internal components, we ensure your machinery maintains peak performance.
Our main product lines cover: Cylinder Liners, Pistons, Piston Rings, Main Bearings, Con-Rod Bearings, Thrust Washers, Overhaul Gasket Kits, Diesel Injection Pumps, Fuel Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
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