Volvo Truck Exhaust Flex Pipe – OE 20709027 / 21838883

Replacement exhaust flex pipe for Volvo FH/FM truck exhaust systems, referenced to OE 20709027 and 21838883. Interlocked flexible construction allows controlled movement between exhaust sections while helping isolate vibration. The same part configuration is also cross-referenced under Volvo 22321908 and Renault Trucks 7420709027 / 7421838883 / 7422321908. Verify the OE number or VIN before ordering.

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Product Description

Product Description

Item	Specification
Product Name	Volvo Truck Exhaust Flex Pipe
Product Type	Interlocked Flexible Exhaust Section
Volvo OE Reference	20709027 / 21838883 / 22321908
Renault Trucks OE Reference	7420709027 / 7421838883 / 7422321908
Construction	Interlocked flexible exhaust hose with formed connection ends
Material	Aluminized Steel & Stainless Steel
Length	330 mm
Maximum Outside Diameter	147 mm
Net Weight	Approx. 1.9 kg
Emission Application	Euro 5 exhaust systems
Packing	12 pcs/carton
Application	Heavy-duty truck exhaust systems

Brand	Model Series	Typical Application
Volvo Trucks	FH Series	FH truck exhaust systems
Volvo Trucks	FM Series	FM truck exhaust systems
Volvo Trucks	FH12 / FH13 / FH16	Selected configurations depending on OE number
Volvo Trucks	FM9 / FM11 / FM12	Selected configurations depending on OE number
Renault Trucks	Magnum Series	Corresponding exhaust applications
Renault Trucks	Premium Series	Corresponding exhaust applications
Renault Trucks	Kerax Series	Corresponding exhaust applications

Interlocked Flexible Structure

Interlocked construction allows the flexible section to accommodate a certain range of vibration, thermal expansion and relative movement between adjoining exhaust sections during truck operation. Compared with a rigid pipe section, it provides the movement needed within the exhaust system and helps reduce direct load transfer to rigid pipes and connection points under repeated vibration and temperature changes.

During production, we focus on strip forming, interlocking consistency, end-forming dimensions and welded connection quality. Stable control of these details helps maintain consistent length, connection dimensions and overall structure for installation matching and repeat bulk orders.

OE Replacement & Custom Supply

For OE replacement orders, production can be based on confirmed product specifications, OE references, drawings or original samples so that length, connection dimensions and end structure remain aligned with the target application. For non-standard projects, overall length, end structure, connection dimensions, material combination and packing can also be reviewed according to your drawing or sample. Final options are confirmed based on order quantity and technical requirements before production.

For repeat orders, confirmed dimensions, structural details and packing requirements can be retained as reference for future replenishment. This helps reduce repeated confirmation and supports more consistent specifications between batches. Packing can also be arranged for bulk shipment, warehouse storage or long-term stock based on your purchasing needs.

Vehicle Fitment & OE Verification

OE 20709027, 21838883, 22321908 and related cross-reference numbers are mainly used for product identification and fitment verification. Vehicle configurations can vary by model year, engine and emission system, so model name or production year alone may not be sufficient to confirm compatibility.

Before ordering, we recommend checking the original OE number first. If the OE information is unavailable or uncertain, you can provide the VIN, original part photos, dimensional drawings or a physical sample for further confirmation. Volvo, Renault Trucks and the OE numbers shown on this page are provided for aftermarket product identification and compatibility reference only and do not indicate that the product is a genuine Volvo or Renault Trucks part.