Espar / Eberspacher Water drain for 30mm Adapter

Copper water drain coil (exhaust drain tube / condensate drain) designed for use with 30mm exhaust adapters in marine diesel heater exhaust systems. This drain pipe helps remove condensation buildup from the exhaust line, improving heater performance and preventing moisture-related issues.

30mm Exhaust Water Drain Coil / Condensate Drain (Copper, M10)

This exhaust drain tube is compatible with 30mm exhaust systems and is typically installed using a 30mm to 30mm exhaust adapter with drain connection. It allows condensation to safely exit the exhaust system, which is especially important in marine environments where moisture buildup is common.

You can find the compatible adapter here: 30mm to 30mm exhaust adapter.

Thread: M10
Total length: 120mm (approximately 4.72 inches)

What You Need for Installation

If your heater has a 30mm exhaust outlet (approximately 1.25 inch / 1-1/4"):

• 30mm to 30mm adapter (with drain connection)
• This 30mm water drain coil (this product)
• 30mm marine exhaust system
• 30mm through hull exhaust fitting

If your heater has a 24mm exhaust outlet (approximately 1 inch – common on heaters up to 19,000 BTU, including models such as Eberspacher / Espar D2, D2L, D4, D4L, D4R, D5):

• 24mm to 30mm exhaust adapter
• 24mm adapter water drain coil
• 30mm marine exhaust system
• 30mm through hull exhaust fitting

Using a water drain (condensate drain) in your exhaust system helps prevent moisture buildup, improving performance and extending the lifespan of your diesel heater, especially in marine environments.

Key Features

• Copper water drain coil for diesel heater exhaust systems
• Also known as exhaust drain tube or condensate drain
• Designed for 30mm (1.25" / 1-1/4") exhaust systems
• M10 threaded connection
• Helps remove condensation from exhaust line
• Improves heater efficiency and reliability
• Suitable for marine diesel heater installations

Common Applications

• Boat diesel heater exhaust systems
• Marine heater installations (boats, yachts, vessels)
• Condensation management in exhaust systems
• Upgrading or modifying exhaust setups
• Preventing moisture buildup in exhaust lines

Compatibility

Suitable for use with 30mm exhaust systems and compatible with Eberspacher (Espar), Webasto, and similar diesel heaters when used with the correct adapter.

Part Number

• 258547160200
• 25 8547 16 0200 / 25 8547 16 02 00
• 25.8547.16.0200