Eberspächer/ESPAR 132439 Flexible Exhaust Pipe
The Eberspächer/ESPAR 132439 Flexible Exhaust Pipe is a replacement exhaust-system component for applicable Eberspächer/ESPAR Airtronic and Hydronic heater installations.
The exhaust pipe carries combustion exhaust away from the heater and is an important part of a properly installed heater system. Flexible exhaust tubing allows the exhaust system to be routed from the heater outlet to a safe discharge location while accommodating the installation requirements of the vehicle or equipment.
Exhaust components are exposed to heat, moisture, road debris, vibration, and corrosion. Inspect the exhaust system during heater service and replace exhaust components that are damaged, severely corroded, restricted, loose, or otherwise unsuitable for continued use.
Compatibility
The Eberspächer/ESPAR 132439 exhaust pipe is used in applicable air and coolant heater installations including:
- Airtronic D2 Gen 1
- Airtronic D2 Gen 2 / Airtronic 2 / AX2
- Airtronic D2 Gen 3 / Airtronic 3 / AX3
- Hydronic D5 Gen 1 – 12V
- Hydronic D5 Gen 1 – 24V
- Hydronic D5 Gen 2 / D5S
- Hydronic S3 D5E
- Hydronic S3 D6L
Exhaust-system requirements can vary by heater model and installation. Verify the heater model, exhaust connection, and installation requirements before ordering.
Product Details
- Part Number: 132439
- Brand: Eberspächer/ESPAR
- Product Type: Flexible Exhaust Pipe
- System: Heater Exhaust System
- Application: Combustion exhaust routing
- Heater Families: Airtronic and Hydronic
- Heater Type: Air and coolant heaters
Exhaust System Inspection
The heater exhaust system should be inspected whenever the heater is serviced. Damage or restriction in the exhaust system can interfere with proper heater operation and should be corrected before returning the heater to service.
Inspect the complete exhaust path from the heater outlet to the exhaust discharge location.
- Check the flexible exhaust pipe for damage, corrosion, crushing, or restriction.
- Inspect exhaust connections for loose or damaged components.
- Inspect clamps and mounting hardware for deterioration or corrosion.
- Verify that the exhaust pipe is securely supported and properly routed.
- Make sure the exhaust outlet has not become obstructed by debris.
- Confirm that exhaust components are appropriate for the specific heater model and installation.
Related Eberspächer/ESPAR Parts
- 130510 – Fuel Pump Screen / Filter
- 416829 – Fuel Metering Pump Connector
- 511235 – 11 mm Fuel Line Clamp
- 511236 – 9 mm Fuel Line Clamp
- 36075300 – Fuel Hose, 3.5 mm ID × 9.5 mm OD
- 251888800102 – Fuel Line Adapter, 3.5 mm to 5 mm
- 202900202004 – Threaded Fuel Standpipe
- 202900202010 – Universal Fuel Pickup Pipe
Part Number Cross Reference
- 132439 – Eberspächer/ESPAR Part Number
Important Compatibility Information
Eberspächer/ESPAR heaters have been produced in multiple generations and installation configurations. Verify the heater model and existing exhaust-system configuration before ordering replacement exhaust components.
If the exact heater model or generation is unknown, use the heater data label to identify the model and production information before selecting replacement parts.
Exhaust routing and installation are safety-critical. Install the exhaust system according to the requirements for the specific heater and vehicle application.

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