Espar / Eberspacher Hydronic 24mm muffler / silencer

Espar / Eberspacher Hydronic 15/16 inch (24 mm) exhaust silencer muffler

Reduce exhaust noise from a compatible Espar / Eberspacher Hydronic heater with this 15/16 inch (24 mm) exhaust silencer muffler. Designed for Hydronic heater exhaust systems using 15/16 inch (24 mm) exhaust pipe, this muffler helps quiet the exhaust outlet and reduce vibration in the exhaust line when installed correctly.

Benefits & Use Cases

This Eberspacher exhaust muffler is intended for service, replacement, or installation work on compatible Hydronic coolant heaters. It is useful when replacing a worn muffler, completing an exhaust repair, or adding noise reduction to a supported heater system.

• Designed for compatible Espar / Eberspacher Hydronic heater exhaust systems
• Supports 15/16 inch (24 mm) exhaust pipe applications
• Helps reduce exhaust noise and vibration from the heater exhaust line
• Useful for RVs, vans, trucks, boats, work vehicles, and equipment fitted with a compatible Hydronic heater
• Also suitable for some VW, Audi, and Porsche fitted heater applications when the heater model and exhaust size match

Technical

• Product Type: Exhaust silencer / muffler
• Brand: Espar / Eberspacher
• Heater Type: Hydronic coolant heater accessory
• Exhaust Size: 15/16 inch (24 mm)
• Part Number: 221000401900 / 22.1000.40.1900 / 22.1000.40.19.00 / 22 1000 40 1900 / 22 1000 40 19 00
• Fuel Type: Not fuel-specific - exhaust accessory only

Compatibility note: Match your heater model, exhaust pipe diameter, and part number before ordering. This muffler should not be assumed to fit heaters with a different exhaust size or unrelated Airtronic / Hydronic models unless compatibility is confirmed.

Heater Compatibility

• Eberspacher Hydronic B4S 201904050000
• Eberspacher Hydronic B4S 201909050000
• Eberspacher Hydronic E4S 201920050000
• Eberspacher Hydronic B5SC 20192805000
• Eberspacher Hydronic D5S 252506050000 Economy and Commercial
• Eberspacher Hydronic D5S 252507050000 Economy and Commercial
• Eberspacher Hydronic D4S 252554050000
• Eberspacher Hydronic D5S 252557050000
• Eberspacher Hydronic D4S 252558050000
• Eberspacher Hydronic D5SC 252598050000

Kit Includes

• Espar / Eberspacher 15/16 inch (24 mm) exhaust silencer muffler

FAQs

What does this exhaust silencer do?
It helps reduce exhaust noise and vibration from compatible Espar / Eberspacher Hydronic heater exhaust systems.

What exhaust size does this muffler fit?
This muffler is for 15/16 inch (24 mm) Hydronic heater exhaust applications. Check your exhaust pipe diameter before ordering.

Will this fit all Espar / Eberspacher heaters?
No. This listing is for the compatible Hydronic heater models listed above. Do not assume fitment for other Hydronic or Airtronic heaters unless the heater model, exhaust size, and part number match.

Can this be used on VW, Audi, or Porsche fitted heaters?
It may be suitable for some VW, Audi, and Porsche fitted heater applications when the installed heater model and 15/16 inch (24 mm) exhaust system match this part. Always confirm the heater identification label before ordering.

Is this a complete exhaust system?
No. This is the exhaust silencer muffler only. Exhaust pipe, clamps, mounting hardware, or other exhaust components may be required depending on the installation.

Can I install this muffler myself?
Heater exhaust routing is safety-critical. Follow the manufacturer instructions and use a qualified installer if you are unsure about exhaust placement, sealing, clearances, or routing.