24mm Parking Heater Exhaust Pipe Muffler Aluminum Alloy Straight Heater Silencer for Eberspacher Airtronic D2 D4 D4S Blue Item Type: Parking Heater Exhaust Pipe Muffler Material: Aluminum Alloy Outer Diameter: Approx. 24mm (0.94inch) Inner Diameter: Approx. 18.5mm (0.73inch) Exhaust Funnel Type: Straight Internal Structure: Straight Line Description: Effectively improve the exhaust sound to give you a better riding experience Application: For 24mm exhaust pipe For Eberspacher Airtronic D2 For Eberspacher Airtronic D4 For Eberspacher Airtronic D4S For Eberspacher D1LC For Eberspacher D1LC Compact For Eberspacher D3LC For Eberspacher D3LC Compact For Eberspacher D5LC