Description
Overview:
This Header Tank is a non-genuine replacement that fits selected JCB JS-Series excavators and replaces OEM part number 334/G3689. It is a moulded plastic coolant reservoir designed to manage expansion and return flow within the engine cooling system, helping to keep the coolant level stable and prevent overheating. The tank connects into the radiator and engine circuit, allowing trapped air to separate and coolant to circulate correctly under load. Built for tracked and wheeled excavators working in demanding site conditions, it offers a practical, direct-fit solution for maintenance and repair. Suitable for models such as the JCB JS115 and JS140, it restores reliable coolant management without modifying the machine's existing hoses or mounting points.
Key Features:
- Non Genuine Part: replacement for JCB OEM 334/G3689
- Durable moulded plastic construction for heat and coolant resistance
- Direct-fit design with OE-style mounting points and hose connections
- Helps prevent overheating by stabilising coolant level and pressure
- Supports proper air separation and return flow in the cooling circuit
- Vibration-resistant build for tough on-site conditions
- Straightforward installation using standard workshop tools
- Suitable for a wide range of JCB JS-Series tracked and wheeled excavators
- Cost-effective way to restore cooling system performance
- Practical choice for planned service or replacing cracked or leaking tanks
Typical Applications:
Used when the original tank is cracked, leaking, or contaminated, or during cooling system overhauls and coolant changes. Ideal for excavators working in construction, civil engineering, demolition, quarrying, utilities, and plant hire, where steady engine temperatures and reliable cooling performance are essential for daily operation.
Also known as:
Expansion tank, coolant expansion bottle, radiator overflow bottle, surge tank, degassing tank, coolant header bottle for JCB excavators.
Fits Models:
JS115
JS140
JS130
JS145
JS160
JS180
JS190
JS200
JS210
JS220
JS235
JS145 WHEELED
JS160 WHEELED
JS175 WHEELED
JS200 WHEELED
Product Specifications
| L&S Part No. | 831 614 |
|---|---|
| Part Type | Non Genuine Part |
| Unit of Sale | 1 |
| Machine Type | Excavators |
| Key Features | - Fits JCB JS-Series models including JS115, JS140, JS145 - Replaces OEM part number 334/G3689 - Moulded plastic for heat and coolant resistance - Direct-fit with OE-style mounting points - Supports air separation and return flow in cooling circuit |
