Copper Fuel Line Kit 2 mm ID – Marine Grade

This marine-grade copper fuel line kit is designed for use in marine and safety-critical environments where standard plastic fuel lines may be unsuitable or non-compliant. Copper fuel lines provide improved durability, heat resistance, and long-term reliability compared to plastic alternatives, making them a preferred solution for diesel heater installations on boats and offshore applications.

The kit is intended for diesel heaters using a 2 mm inner diameter (metric) fuel system. It may also be suitable for other heater models where the fuel line diameter and installation requirements match.

Important: It is the customer’s responsibility to ensure that installation complies with all applicable marine safety regulations and local requirements.

Fuel Line Specifications

• Inner Diameter (ID): 2 mm (metric size, approx. 0.079 in – not a standard SAE size)
• Outer Diameter (OD): 4 mm (approx. 0.157 in)
• Length: 19.68 ft (6 m)
• Material: Copper
• Application: Marine and safety-critical installations

Reference Part Numbers

Can be used to replace these parts:

• 292199012150
• 29.2199.01.2150
• 29.2199.01.21.50
• 29 2199 01 2150
• 29 2199 01 21 50

The above part numbers are for reference and cross-compatibility purposes only.

Heater Compatibility

Compatible with the following heaters and any other diesel heater using a 2 mm (approx. 0.079 in) inner diameter fuel line, subject to installation requirements:

Eberspacher / Espar – Air Heaters

• Airtronic D2 / D2L
• Airtronic D4 / D4L / D4R
• Airtronic D5
• Airtronic D6L / D8L
• D1LC
• D3LC
• D5LC

Eberspacher – Water Heaters

• Hydronic D4W
• Hydronic D5W
• Hydronic D5WS
• Hydronic D5WSC

Webasto - Air Heaters

• Air Top 2000 / 2000S / 2000ST

Webasto - Water Heaters

• Thermo Top C
• Thermo Top E
• Thermo Top Evo

Key Notes

• Marine-grade alternative to plastic fuel lines
• Metric 2 mm ID fuel line commonly used on Eberspacher / Espar and Webasto systems
• Not directly interchangeable with standard SAE fuel line sizes such as 1/8 in
• Installer must verify compliance with marine and local safety regulations 

People Also Ask

Is a copper fuel line required for marine installations?
Many marine installations require non-plastic fuel lines. Copper is commonly used, but local marine safety regulations must always be verified.

Is this fuel line compatible with all diesel heaters?
This fuel line is compatible with heaters using a 2 mm inner diameter fuel system. Compatibility should be confirmed before installation.

Is 2 mm the same as 1/8 inch fuel line?
No. A 2 mm fuel line is a metric size and is not directly interchangeable with standard SAE fuel line sizes such as 1/8 inch.

Can this replace the original plastic fuel line?
Yes, it can replace plastic fuel lines where a 2 mm ID fuel system is used, subject to installation and regulatory requirements.