Description
Front exhaust pipe for Citroën/Peugeot 1.8 16V and 2.0 16V engines. Removed from a vehicle with an honest 83,000 km. Original high-quality part.
This front exhaust pipe (part number 1706J1) is a direct-fit component suitable for a range of Citroën and Peugeot models equipped with 1.8 16V or 2.0 16V engines. Designed for professional workshops and competent DIYers, the pipe restores correct exhaust routing, helps maintain backpressure characteristics and prevents exhaust leaks at the front section of the system.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: For Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Peugeot 307, Peugeot 407
- Product Codes: 1706J1
- Additional Numbers: Removed From Vehicle Mileage: 83,000 km
Compatibility
Fits vehicles with 1.8 16V and 2.0 16V petrol engines from the Citroën/Peugeot family as listed above. Always check the part number 1706J1 against the part required for your specific model and engine variant before ordering.
Function
The front exhaust pipe routes exhaust gases from the engine and connects the manifold or downpipe to the subsequent sections of the exhaust system (catalyst/resonator). It must maintain a gas-tight seal at flanges and joints and withstand high temperatures, vibration and road conditions.
How To Replace
- Raise the vehicle safely and support it on axle stands with the parking brake engaged.
- Support the exhaust downstream of the section to be removed to avoid strain on mounts.
- Loosen and remove flange bolts or clamps connecting the front pipe to the manifold/catalyst and the mid/downpipe. Penetrating oil may be required on corroded fasteners.
- Remove worn gaskets and inspect flange faces for damage. Replace gaskets and any corroded or damaged bolts/studs.
- Fit the new pipe, hand-tighten connections, lower the vehicle slightly to settle the exhaust into hangers, then torque fasteners to manufacturer specifications.
- Start the engine and inspect for leaks, rattles and correct alignment. Re-torque fasteners after a short test drive if necessary.
Installation Recommendations
- Use new exhaust gaskets and new bolts/nuts or high-quality clamps when reassembling.
- Apply high-temperature anti-seize to bolts to ease future removal.
- Observe manufacturer torque specifications for flange fasteners; if unknown, consult official workshop manual.
- Inspect rubber hangers and replace any that are cracked or stretched to prevent undue stress on the new pipe.
- Check surrounding components (heat shields, brackets, catalyst connection) for wear and address as needed to avoid premature failure.
- If you are not confident with exhaust work or if fasteners are heavily corroded, have the replacement performed by a professional workshop.
Why The Part Most Commonly Fails
Front exhaust pipes usually fail due to corrosion from road salt and moisture, prolonged exposure to heat cycles that weaken material and welds, mechanical damage from road debris or bumps, and fatigue at flange areas or flex joints. Leaks often appear first at flanges, welded seams or where hangers allow excessive movement.
Order this 1706J1 front exhaust pipe to restore proper exhaust sealing and routing on compatible Citroën and Peugeot vehicles. Suitable for mechanics and experienced DIY installers looking for an OE-fit component.
