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The exhaust system ensures good air


The exhaust is an often underestimated part on the vehicle. The main tasks of the exhaust system are to dissipate the exhaust gases, dampen the noise of the engine and filter environmentally harmful residues. If the exhaust system has a defect, it can already have a big impact. Increased fuel consumption, pollution and noise pollution are the consequences when damage occurs. The exhaust system is constantly subjected to a high load in order to protect us and our environment. Every combustion in the engine produces loud banging noises, and the exhaust system must contain these noises. Added to this is the immensely high temperature of the exhaust gases. Vibrations from the outside of the vehicle also have an effect on the exhaust system, as do liquids or road salt from the road. In the lower section of the page, we go into more detail on the following topics:

Structure of an exhaust system
Detect defects in the exhaust system

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IMASAF Endschalldämpfer SMART ForTwo Coupe + Cabrio (451) 1.0 61 / 71 PS ab 2007

für Fahrzeuge mit EURO 5b-Norm

Item No.: A13813W100
Manufacturer: IMASAF
part number: 32.56.07
Verwendung: Endschalldämpfer
Laenge_mm: 980
Einbauseite: hinten
Mengeneinheit: Stück
Baugruppe: Abgasanlage
184,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

WAHLER AGR Ventil 710327D für BMW 1er 3er 5er X1 X3 X5 6er 7er 11717810871

für alle neueren 2l u. 3l Dieselmotoren (1995/2993ccm)

Item No.: A02213W337
Manufacturer: WAHLER
part number: 710327D
???item.ean.code???: 4029783011238
Verwendung: Abgasrückführung
Baugruppe: Abgasrückführung
64374267: with seal
Mengeneinheit: Stück
99,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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6x Drallklappen Ansaugbrücken ALU Ø 32 mm + ELRING Dichtungssatz + Stützring Set BMW M57

Ø 32 mm | für BMW 325d-335d 525-535d 635d 730d 30d 35d

Item No.: PKT472W126
Manufacturer: keine Angabe
part number: 228.690
Delivery:

  • 1x Swirl Flaps, suction pipe Piece
  • 1x Gasket Set, intake manifold Piece - ELRING 228.690
  • 1x Gasket Set, intake manifold Piece
53,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

IMASAF 09.44.14 Dichtung Abgasrohr SMART Fortwo 451 1.0 ALFA ROMEO 164 3.0 V6 / i.e.

Einschränkung beachten!

Item No.: A13313W900
Manufacturer: IMASAF
part number: 09.44.14
???item.ean.code???: 8033434011634
Durchmesser_2_mm: 9
Verwendung: Abgasrohr
Lochanzahl_2: 2
Lochanzahl_1: 1
Durchmesser_1_mm: 49
Mengeneinheit: Stück
Baugruppe: Abgasanlage
5,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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IMASAF Endschalldämpfer + Anbausatz SMART ForTwo (451) 1.0 61 / 71 PS ab 2007

inkl. Anschlagpuffer + Dichtung | nur für EURO 5b-Norm

Item No.: PKT972W213
Manufacturer: IMASAF
part number: 32.56.07, 09.12.77, 09.44.14
Delivery:

  • 1x End Silencer Piece - IMASAF 32.56.07
  • 2x Holder, exhaust system Piece - IMASAF 09.12.77
  • 1x Gasket, exhaust pipe Piece - IMASAF 09.44.14
195,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

2x BOSCH 0258003477 Lambdasonde VOR KAT für BMW E46 320-330i E39 E60 E61 E38 E65

auch für X3 E83 X5 E53 Z3 Z4 | BMW OE Nr. 11781742050

Item No.: PKT872W385
Manufacturer: BOSCH
part number: 0 258 003 477
???item.ean.code???: 3165142800189
Delivery:

  • 2x Lambda Sensor Piece - BOSCH 0 258 003 477
91,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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IMASAF Reparaturrohr Abgasrohr DPF KAT Katalysator für OPEL ZAFIRA B 1.9 CDTI

verwendbar bei allen drei Motoren: 100 / 120 / 150 PS

Item No.: A16813W738
Manufacturer: IMASAF
part number: 53.85.94
Einbauseite: nach Rußpartikelfilter, vor Endschalldämpfer
Verwendung: Katalysator
Mengeneinheit: Stück
Baugruppe: Abgasanlage
Laenge_mm: 800
23,30 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

IMASAF Katalysator + Krümmer OPEL Astra H Signum Vectra C Zafira B 1.6 1.8

inkl. MONTAGEMATERIAL | + ALFA 159 939 FIAT CROMA 19)

Item No.: A16813W953
Manufacturer: IMASAF
part number: 53.81.53
???item.ean.code???: 8033434098123
64375630: 8 49 296
Einbauseite: vorne
Laenge_mm: 450
Mengeneinheit: Stück
Baugruppe: Abgasanlage
357,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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NOx-Sensor Lambdasonde OPEL Zafira Tourer C 1.6 CDTI 855608 / 55487677

vom OPEL Erstausrüster

Item No.: A16214W585
Manufacturer: OPEL
part number: 55501897
Verwendung: NOx-Wert (Harnstoffeinspritzung)
Mengeneinheit: Stück
Baugruppe: Abgasanlage
instead of 495,06 EUR 245,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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IMASAF Mittelschalldämpfer + Anbausatz VW Touran 1T1 1T2 1.4 FSI 1.4 TSI 2.0 FSI

IMASAF = Qualität aus Leidenschaft | mit E-Prüfzeichen

Item No.: PKT972W149
Manufacturer: IMASAF
part number: 71.64.56, 114-952, 921-961, 183-703, 113-946
Delivery:

  • 1x Middle Silencer Piece - IMASAF 71.64.56
  • 1x Pipe Connector, exhaust system Piece - FA1 114-952
  • 1x Pipe Connector, exhaust system Piece - FA1 921-961
  • 2x Holder, exhaust system Piece - FA1 183-703
  • 1x Holder, exhaust system Piece - FA1 113-946
110,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

PIERBURG AGR Ventil Abgasrückführungsventil AUDI A4 A5 A6 Q5 Q7 2.7/3.0 TDI

OE-Nr. 059 131 502 B, für 163/190/211/240 PS-Motoren

Item No.: A18213W323
Manufacturer: PIERBURG
part number: 7.02132.07.0
???item.ean.code???: 4028977716942
Ventilart: Steuerventil
Verwendung: Abgasrückführung
Betriebsart: elektrisch
Baugruppe: Abgasrückführung
64374267: with seal
64374570: SI 0100
Mengeneinheit: Stück
127,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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PIERBURG Druckwandler Magnetventil Turbolader für Ford Focus II Galaxy S-Max

PIERBURG 7.01771.01.0, für 2.0 TDCi 130/136/140 PS

Item No.: A06513W707
Manufacturer: PIERBURG
part number: 7.01771.01.0
???item.ean.code???: 4028977672187
Spannung_v: 12
Ventilart: Magnetventil
Verwendung: Turbolader
Baugruppe: Luftversorgung
64374570: SI 0096
Mengeneinheit: Stück
Betriebsart: elektrisch-pneumatisch
37,05 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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The structure of the exhaust system

The exhaust system starts with the exhaust manifold and the associated manifold gasket. An exhaust manifold usually lasts the life of a car. From the manifold, the exhaust gases are directed through the individual openings into the so-called Y-pipe. Installed on or in the Y-pipe is the flex pipe, which consists of a wire mesh. It can move easily and thus absorb and cushion the vibrations of the engine block. At the same time, it is also susceptible to damage and corrosion. In most vehicles, the Y-pipe also houses the lambda sensor. This reports the composition of the exhaust gases and so the mixing ratio of air and fuel can be optimized.

In gasoline engines, the catalytic converter now follows and serves as a filter, which filters out large parts of the toxins. In diesel engines, this is usually followed by the soot particle filter. In both diesel and gasoline engines, the AGR valve is also installed between the exhaust system and the intake tract. In the case of diesel, exhaust gas recirculation serves to reduce nitrogen oxide by lowering the combustion temperature. Gasoline engines benefit from EGR because the admixture of exhaust gases reduces fuel consumption.

A brief overview of the exhaust gas purification of the two engines:

Gasoline engines:
The formation of carbon dioxide cannot be prevented in gasoline engines. The catalytic converter, however, reduces the pollutants by converting carbon monoxide into carbon dioxide and nitrogen oxides into nitrogen. The catalytic converter contains a body made of ceramic, which is constructed in the form of a honeycomb. The precious metals platinum, rhodium and palladium are built into the ceramic, which additionally bind the harmful substances.

Diesel engines:
Soot formation is the biggest problem in diesel engines. The soot particle filter or diesel particulate filter (DPF) filters the particles out of the exhaust gas. A sensor determines the regeneration phase. Then the DPF heats up and the fine dust particles are burned off.

The catalytic converter or diesel particulate filter is followed by the pre- and mid-silencer, where mainly the vibrations are reduced and the exhaust gas flow is reduced. The final component in the exhaust system is the final muffler. Here, vibrations are further reduced by damping material and the exhaust gases are divided into several chambers, reducing each other's sound waves. Condensation collects in the exhaust system, which is spewed out at the end together with the exhaust gases.

How can defects in the exhaust system be detected and what are they?

The high loads on the exhaust system can lead to defects. These are either broken components such as the lambda sensor, soot particle filter or catalytic converter, or leaks in the exhaust pipe and exhaust. The latter is noticeable by louder noises at the exhaust or also by wet spots under the car. A rattling at the exhaust system is often an indication of a loose bracket or a broken catalytic converter. A visual inspection will often show where the damage is. Small open or leaking areas can be sealed with a exhaust repair paste or, alternatively, welded. Brackets are also quickly changed on an exhaust system.

However, if the defect is not on the outside of the visible parts of the exhaust system, the repairs are somewhat more complex. Increased fuel consumption or loss of power, for example, indicate broken parts such as the lambda sensor and DPF. Also dark exhaust gases are an indication of a defect located in the exhaust system. In the cases, the repair of the exhaust system is possible only with appropriate expertise.

In any case, rely on high-quality spare parts. These do not necessarily have to be original parts from the vehicle manufacturer. These often only obtain parts from reputable suppliers. It is therefore worth buying branded goods in OEM quality. It is significantly cheaper than the original parts but still of the same quality. Thus, the newly installed spare parts from the exhaust system last a long time and you still save money. To find the right parts for the exhaust system, it is best to select your vehicle with us. Then you will be shown only suitable parts. If you are unsure which spare part you need for your exhaust system, simply contact our customer service with the 17-digit chassis number.