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exhaust system for Peugeot AK-AZU

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2CV old, rear mufflers for Citroen 2CV to year of construction 11/1963. Good reproduction! Round

d inlet, flattened outlet. Unfortunately, the rear silencer is a bit louder than the original! That's not nice, but unfortunately we haven't found any better ones yet.

2CV old, rear mufflers for Citroen 2CV, starting from year of construction 11/1963 to 07/1972

Round inlet, flattened outlet. Unfortunately, the rear silencer is a bit louder than the original! That's not nice, but unfortunately we haven't found any better ones yet.

2CV6, elbow pipe (S-pipe). Good reproduction. Brand manufacturer from Europe. Without fixing

material! Suitable for Citroen 2CV6 + 2CV4, Dyane, AMI and Mehari.

2CV6, rear silencer (long silencer). Good reproduction. Brand manufacturer from Europe. Without

mounting material! Suitable for Citroen 2CV6 + 2CV4, Dyane, AMI and Mehari.

2CV6, exhaust clip 49mm, for transition manifold to heat exchanger and transition heat exchanger to

the front muffler. Suitable for Citroen 2CV6 + 2CV4.

2CV6, front silencer. Brand manufacturer from Europe. Suitable for Citroen 2CV6, Dyane 6, AMI and

Mehari. According to our more than 35 years of experience, the only front silencer for the 2CV that fits really well.

2CV6, heat exchanger, left + right (1 pair). Good reproduction made of stainless steel. The heat

exchangers are like the original, and also have the foam on the flaps. But the 2CV with stainless steel heat exchanger sounds slightly different (louder, more metallic). Attention: The heat exchangers fit only on the Citroen 2CV6 (Dyane, Mehari, AK, AMI8), until 1990, not suitable for 2CV4.

2CV6, heat exchanger, left + right (1 pair). Good replica. The heat exchangers are like the

original, and also have the foam on the flaps. The heat exchangers are black powder coated. Attention: The heat exchangers fit only on the Citroen 2CV6 (Dyane, Mehari, AK, AMI8), until 1990. Not suitable for 2CV4.

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Exhaust system for the Citroën 2CV

What function must an exhaust system fulfill?

Every internal combustion engine produces a characteristic “exhaust note” due to the pulsating gas flow from the cylinders. To achieve this, it is necessary to reduce the sound energy of the exhaust gas flow. There are two ways to reduce noise: absorption and reflection. These processes primarily take place in a muffler.

Apart from its sound-dampening function, the exhaust system is also exposed to extreme conditions. The fuel-air mixture in the cylinders heats up suddenly to as high as 2,400 °C. As a result, the gas expands and shoots into the exhaust system at supersonic speeds. This produces explosion-like banging noises, which must be reduced by 50 dB(A) from the engine exhaust valve to the end of the exhaust system.

In addition to these temperature and pressure stresses, the exhaust system must absorb vibrations and oscillations originating from the road surface. Furthermore, the exhaust is exposed to corrosion from hot exhaust gases, acids, splashing water, and salt water.

The first exhaust systems for the Citroën 2CV

There are two different versions of the exhaust systems for the Citroën 2CV with 375 cm³ and 425 cm³ engines. Each consists of two components (mufflers). The 2CV, which was built between 1950 and 1963 (models AZ, AZL, and AZAM), had an exhaust with an inner diameter of 26 mm.

Starting in 1963, the system was changed to an exhaust with a 30 mm inner diameter (models from 1963 to 1972, types AZL and AZAM).

Both of these exhaust variants had their exhaust outlet located below the engine-transmission unit. This exhaust outlet sometimes led to significant exhaust fumes entering the passenger compartment if the exhaust was not properly sealed. Exhaust fumes particularly penetrated the passenger compartment in the increasingly congested urban traffic, as there was no airflow to blow the fumes away.

This exhaust system was also used on the Fourgonnette (a small van based on the 2CV) from these model years.

In the 1960s, however, there were already a few exhaust systems that were more complex in design. For example, there were right-side exhaust systems with exhaust pipes sometimes routed horizontally under the vehicle so that the exhaust gases could exit at the rear left.

We carry all these different exhaust systems in our lineup. This includes the rarely requested right-side exhaust systems. The AMI6 also had a unique exhaust layout, which we carry in our lineup.

Exhaust system for the Citroën Fourgonette

With the introduction of a new generation of engines with 435 cm³ (2CV4) and 602 cm³ (2CV6) displacement, there was also a switch to an exhaust system consisting of four individual parts (2x mufflers + 2x exhaust pipes). This is mounted on the left side of the vehicle, with the exhaust outlet at the rear left under the rear bumper.

For the 2CV6, we also carry a stainless steel exhaust system.