The YNF13378 Radiator Lower Hose is designed for the XE135B excavator equipped with the 4BG1 engine. Installed between the radiator outlet and the engine coolant inlet, it returns cooled coolant back to the engine, completing the circulation loop of the cooling system.

A reliable lower hose is essential for maintaining balanced engine temperature, preventing overheating, and ensuring stable operation under heavy-duty conditions. Manufactured according to OEM standards, this hose provides accurate fitment, secure sealing, and long-lasting durability.

• Compatible with XE135B excavator (4BG1 engine)

• Radiator Lower Hose 

• Manufactured to OEM specifications for direct replacement

• High-quality rubber resistant to heat, pressure, and coolant corrosion

• Reinforced construction for durability under vibration and demanding jobsite conditions

• Precision-molded for secure, leak-free installation

• Machine model: XE135B

• Engine type: 4BG1

• Component type: Radiator Lower Hose

• Installation position: Radiator outlet to engine inlet

• Function: Returns cooled coolant to engine for stable temperature regulation

• Part number and model verification assistance

• Technical guidance for cooling system maintenance and replacement

• Stable supply for export and aftermarket distribution

• OEM and customized production available

• Individually packed to prevent deformation and transport damage

• Export-standard carton packaging

• Neutral or YNF branded packaging optional

• Can be supplied together with YNF13377 upper hose as a complete radiator hose set

Q1: Is YNF13378 suitable for XE135B?
A: Yes, it is designed specifically for XE135B equipped with the 4BG1 engine.

Q2: Is it an OEM-standard replacement?
A: Yes, manufactured to OEM specifications for direct replacement.

Q3: Can I buy it as a set with the upper hose?
A: Yes, YNF13377 (upper) and YNF13378 (lower) are available as a complete set.