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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

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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Related, superseded, cross reference or alternative numbers for comparison.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
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Related, superseded, cross reference or alternative numbers for comparison.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
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Related, superseded, cross reference or alternative numbers for comparison.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
DISPLAYING 1 to 3 (of 3 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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