Eberspacher Airtronic D2 / D2L / D4 / D4L / D4R Marine Installation Kit

Marine heater installation kit for safe onboard heating

Install your diesel air heater in a marine environment with the right exhaust, fuel, mounting, and combustion air components for safer onboard heating. This marine installation kit is suitable for Eberspacher Airtronic D2, D2L, D4, D4R and D4L heaters, and can also be used with Webasto EVO 40/55 heaters when installed correctly.

Benefits & Use Cases

This marine upgrade kit is designed for boat owners who already have a universal heater installation kit and need the correct marine components for a cabin, berth, or small vessel heating setup. It helps support a cleaner, more durable installation with marine-grade exhaust, fuel, drain, and mounting parts.

The insulated marine exhaust silencer, 30 mm thru-hull fitting, water drain, and stainless steel mounting bracket make this kit a strong choice for replacing basic non-marine installation parts in onboard diesel heater systems.

• Supports marine installation for Eberspacher Airtronic D2, D2L, D4, D4R, and D4L heaters
• Includes insulated exhaust silencing for quieter onboard heater operation
• Helps protect the heater system with a water drain and drip protection components
• Suitable for boat cabins, berths, small vessels, and marine heater upgrades

Technical

• Application: Marine installation upgrade kit for diesel air heaters
• Primary Compatibility: Eberspacher Airtronic D2, D2L, D4, D4R and D4L
• Additional Compatibility: Suitable for Webasto EVO 40/55 heaters when fitted correctly
• Exhaust Adapter: 24 mm to 30 mm, 90-degree exhaust adapter
• Thru-Hull Fitting: 30 mm thru-hull fitting
• Fuel Standpipe: 60 cm
• Fuel Line: Marine-grade fuel line with shut-off valve
• Mounting: Stainless steel L-shape mount bracket
• Combustion Air: Combustion air intake silencer included
• Installation Note: Marine installations should be completed by a trained engineer and must follow local safety regulations

Compatibility

• Eberspacher Airtronic D2 and D2L diesel air heaters
• Eberspacher Airtronic D4, D4L and D4R diesel air heaters
• Webasto EVO 40/55 heaters when used with the correct installation setup
• Marine cabins, boat heater upgrades, and onboard diesel heater installations
• Airtronic D5 applications may require a different mounting bracket; contact Heatso before ordering for D5 use

Kit Includes

• 2 x Marine Exhaust Clamp
• 24mm to 30mm 90Deg Exhaust Adapter
• Water Drain
• Insulated marine exhaust silencer
• 30mm thru-hull fitting
• Marine grade fuel line with shut off valve
• 60 cm Fuel Standpipe
• Aluminum foil for drip protection
• Stainless Steel Mount Bracket (L shape)
• Combustion air intake silencer

FAQs

Which heaters is this marine installation kit suitable for?
This kit is suitable for Eberspacher Airtronic D2, D2L, D4, D4R and D4L heaters. It can also be used with Webasto EVO 40/55 heaters when matched to the correct installation setup.

Can I use this kit if I already have a universal heater kit?
Yes. This kit is intended as a marine upgrade for users who already have a universal installation kit and need marine exhaust, fuel, mounting, and combustion air components for boat use.

Why does the kit include a water drain?
The water drain helps remove moisture from the exhaust system, supporting safer heater operation and helping reduce the risk of moisture-related damage in marine installations.

Does this kit include marine fuel components?
Yes. The kit includes marine-grade fuel line with a shut-off valve and a 60 cm fuel standpipe for a more complete onboard fuel installation.

Can I install this marine heater kit myself?
Marine installations are safety-critical and should be completed by a trained engineer who can check routing, ventilation, exhaust placement, and local compliance requirements.

Can this kit be used for an Airtronic D5 heater?
It may be suitable for Airtronic D5 installations, but that heater requires a different mounting bracket. Contact Heatso before ordering for a D5 setup.