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Porsche > 996 (911) (1997-2005) > Exhausts >

Standard Silencers / Mufflers

Standard Silencers / Mufflers

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DISPLAYING 1 to 5 (of 5 products)
Exhaust muffler / silencer REAR OE style with TÜV/EEC approval. Porsche 996 - 99611112155, 99611112156, 99611112157, 99611113154, 99611113157, 99611113168, 99611112255, 99611112256, 99611112257, 99611113254, 99611113257, 99611113268 - 1620609570, 1620609580, 96.335S-1, 96.335S-2
3
Exhaust muffler / silencer REAR OE style with TÜV/EEC approval. Porsche 996
99622096335SKIT
Product Information
Product Information
Replacement Rear exhaust box OE style - Left & Right set. Bead blasted stainless steel. With TUV/EEC approval (3.4ltr)

dansk   tuv

Fits:
Porsche 996 C2 / C4 3.4ltr - 1997 to 08/2001 -  With TÜV/EEC approval for 3.4ltr engine
Porsche 996 C2 / C4 / C4S 3.6ltr - 09/2001 to 2005






Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99622096335SKIT
99611112155
99611112156
99611112157
99611113154
99611113157
99611113168
99611112255
99611112256
99611112257
99611113254
99611113257
99611113268

The product you are viewing cross references to these numbers
Exhaust muffler / silencer replacement OE Porsche 996 Gen2 - 99611113168, 99611113268, 99611113157, 99611113257
3
Exhaust muffler / silencer replacement OE Porsche 996 Gen2
EXHAUSTKIT72
Product Information
Product Information
Exhaust muffler / silencer replacement OE Porsche 996 Gen2 (SET OF 2)

porsche

Standard specifications exhaust

Standard Replacement exhaust back boxes set of 2 left & right, not for cars fitted with factory sports exhaust.

Fits:
Porsche 996 C2 / C4 / C4S 3.6L 2002-2005
Fits Tiptonic & Manual

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

EXHAUSTKIT72
99611113168
99611113268
99611113157
99611113257

The product you are viewing cross references to these numbers
Exhaust muffler / silencer Rear OE Style. With TÜV/EEC approval Porsche 996 - 996335S2, 996335S1, 1620609570, 1620609580, 96.335S-1, 96.335S-2, 99611112155, 99611112156, 99611112157, 99611113154, 99611113157, 99611113168, 99611112255, 99611112256, 99611112257, 99611113254, 99611113257, 99611113268 - 96.335S-1, 93.335S-2, 1620609570, 1620609580
7
Exhaust muffler / silencer Rear OE Style. With TÜV/EEC approval Porsche 996
Special Offer
99622096335S
Product Information
Product Information
Replacement Rear exhaust box OE style - left or right. Bead blasted stainless steel. With TUV/EEC approval (3.4ltr)

dansk   tuv

Fits:
Porsche 996 C2 / C4 3.4ltr - 1997 to 08/2001 -  With TÜV/EEC approval for 3.4ltr engine
Porsche 996 C2 / C4 / C4S 3.6ltr - 09/2001 to 2005



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99622096335S
996335S2
996335S1
1620609570
1620609580
96.335S-1
96.335S-2
99611112155
99611112156
99611112157
99611113154
99611113157
99611113168
99611112255
99611112256
99611112257
99611113254
99611113257
99611113268

The product you are viewing cross references to these numbers
Exhaust muffler / silencer. Porsche 996 Carrera 2/4 2000-01 - 99611112270, 99611112170
2
Exhaust muffler / silencer. Porsche 996 Carrera 2/4 2000-01
Special Order item
99611112
Product Information
Product Information
Exhaust muffler / silencer.

porsche

Fits:
Porsche 996 Carrera 2/4 3.4L 2000 - 2005
with M480 (6-speed manual transmission) and with engine code M96.01, 96.02 and 96.04

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99611112
99611112270
99611112170

The product you are viewing cross references to these numbers
Exhaust Muffler. Porsche 996 3.6L 2002-05 - 99611113177, 99611113157, 99611113168, 99611113277, 99611113257, 99611113268
3
Exhaust Muffler. Porsche 996 3.6L 2002-05
Special Order item
99611113
Product Information
Product Information
Exhaust Muffler.
Restore the rear exhaust system of your Porsche 911 (996-series) with these genuine OEM mufflers. Designed for 2002-05 Porsche 911 Carrera/Carrera 4 models, these silencers deliver direct-fit replacement, correct hanger mounting, factory tail-pipe alignment and authentic acoustic performance.  

Fits:
  • Porsche 996 C2 3.6L 2002-2005
  • Porsche 996 C4 3.6L 2002-2005
  • Porsche 996 C4S 3.6L 2002-2005

Diagram Ref No 20 And 26

What This Product Does:

  • The muffler (silencer/back-box) is the final large component in the exhaust system: it reduces noise, completes the exhaust flow path, and ensures the exhaust gases are safely expelled under the rear of the vehicle.
  • It helps maintain the correct back-pressure, supports the exhaust hangers and alignment, and plays a role in sound tuning (ensuring the vehicle meets factory acoustic specification).
  • Correct fitment ensures the tailpipes, hangers, connections and appearance align with factory standards—especially important for OEM look, sound, and performance.

Symptoms Of Wear, Damage Or Need For Replacement:

  • Excessive noise, harsh exhaust tone, or sudden change in sound (potential sign of internal baffle damage or leaks).
  • Visible corrosion, holes, cracks or rust on the muffler body or tail-pipe connections—common on older 996 cars.
  • Poor fitment or misalignment of the muffler/tailpipe assembly (exhaust shifting, visible sagging or melted brackets).
  • Reduced performance / overheating of nearby components due to exhaust misalignment or exhaust gases contacting bodywork.
  • Bad or broken mounting/hanger points causing vibration or movement under load.


Why Replacement Matters:

  • Replacing worn or damaged mufflers restores correct sound, fit and backing support of the full exhaust system.
  • Maintains factory appearance and acoustic characteristics — important for value, authenticity and drive-quality in the 996 series.
  • Prevents further damage: a failing muffler may lead to hanger failure, alignment issues or heat damage to nearby components.
  • Enhances reliability: a fresh muffler assembly means fewer leaks, less corrosion risk and better longevity of the rear exhaust section.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99611113
99611113177
99611113157
99611113168
99611113277
99611113257
99611113268

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
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About Standard Silencers / Mufflers

Porsche Standard Silencers & Mufflers - OEM Exhaust Replacement Solutions

Standard Silencers / Mufflers are factory-style exhaust components designed to manage exhaust flow, reduce noise, and maintain the original driving characteristics of your Porsche. Engineered to meet strict quality and performance standards, standard mufflers provide balanced exhaust backpressure, refined sound levels, and reliable long-term operation.

Available from Design911, this category includes genuine Porsche exhaust mufflers as well as high-quality aftermarket standard replacements, offering Porsche owners reliable options for maintenance, restoration, and everyday driving.

What Do Standard Silencers / Mufflers Do?

Standard exhaust silencers control sound levels and exhaust flow to deliver smooth, refined performance.

Core Functions:

  • Reduce exhaust noise to factory-approved levels.
  • Manage exhaust gas flow efficiently.
  • Maintain correct backpressure for engine performance.
  • Support smooth drivability and comfort.
  • Preserve original exhaust sound characteristics.

Proper silencer operation is essential for quiet, reliable, and compliant vehicle operation.

Why Do Standard Exhaust Silencers Fail?

Despite being designed for longevity, exhaust mufflers are exposed to heat, moisture, and corrosion. Common failure causes include:

  • Internal corrosion from condensation and heat cycles.
  • Rusting of outer casing or welds.
  • Internal baffle deterioration or rattling.
  • Exhaust leaks due to material fatigue.
  • Age-related wear in high-mileage vehicles.

Failing silencers can result in excessive noise, poor sound quality, and reduced exhaust efficiency.

Why Upgrade or Replace Standard Silencers / Mufflers?

Replacing worn exhaust silencers restores factory performance and reliability.

Upgrade Benefits:

  • Restores original exhaust sound and refinement.
  • Ensures correct exhaust flow and backpressure.
  • Maintains authenticity and originality of your Porsche.
  • Improves durability compared to ageing components.
  • Ideal for servicing, restoration, and daily use.

Choosing OEM or high-quality aftermarket replacements ensures long-term reliability and peace of mind.

Highlights

  • Porsche standard silencer and muffler replacements
  • Genuine Porsche and premium aftermarket options
  • Factory-style fitment and sound characteristics
  • Designed for comfort, reliability, and longevity
  • Ideal for maintenance and restoration       

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