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Porsche > 356 (1950-1965) > 356C 1963-65 > Exhausts >

2 IN / 2 OUT
Standard Silencers

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DISPLAYING 1 to 4 (of 4 products)
Exhaust Muffler / Silencer Rear box. Porsche 356 A/B/C - 1620603900, PO-92103, 61654103, 616 54103 - 1620603900
5
Exhaust Muffler / Silencer Rear box. Porsche 356 A/B/C
1620603900
Product Information
Product Information
Rear Exhaust, Sport, with two straight tailpipes in Carrera style. Deep sporty sound. Tail pipes constructed to fit perfectly with Carrera rear lower panel, but will come out just under the car body on "non Carreras".

danskmotorsport

Fits:
Porsche 356 A 1.6L 08/1950-07/1964
Porsche 356 B model T.5 Europe 1.6L 08/1950-07/1964
Porsche 356 B all/C export - USA 1.6L 08/1950-07/1964

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Related, superseded, cross reference or alternative numbers for comparison.

1620603900
1620603900
PO-92103
61654103
616 54103

The product you are viewing cross references to these numbers
Exhaust muffler / silencer rear box. Porsche 356 B / C - 1620610300, PO-92106, PO92106, 61611101005, 61611122103, 61611122303
3
Exhaust muffler / silencer rear box. Porsche 356 B / C
1620610300
Product Information
Product Information
Sport rear exhaust box with twin tail pipes for bumper. Ø 40 mm. Supplied with two clamps. Painted steel.

danskmotorsport

Fits:
Porsche 356 B/C 1.6-2.0L 01/1959-12/1965

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Related, superseded, cross reference or alternative numbers for comparison.

1620610300
1620610300
PO-92106
PO92106
61611101005
61611122103
61611122303

The product you are viewing cross references to these numbers
Exhaust muffler / silencer rear box. Porsche 356 B/C / 912 - 92.301, 92301, 1620600400, 61611101605 - 92.301, 1620600400
4
Exhaust muffler / silencer rear box. Porsche 356 B/C / 912
61611101605/1
Product Information
Product Information
Rear exhaust box. Made of steel with grey heat resistant paint

dansk

Fits:
Porsche 356B model T6 Europe
Porsche 356C Europe
Porsche 912 1965-69 Europe

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Related, superseded, cross reference or alternative numbers for comparison.

61611101605
92.301
92301
1620600400
61611101605

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Rear box. Porsche 356B/C / 912 USA - 61611101005, 61611101005S, 92.311, 92311, 1620600500 - 1620600500
2
Exhaust Muffler / Silencer Rear box. Porsche 356B/C / 912 USA
61611101005/1
Product Information
Product Information
Exhaust Muffler / Silencer Rear box. Steel Painted

dansk

Fits:
Porsche 356 B model T.5 Europe 1.6-2.0L
Porsche 356 B all / C export - USA 1.6-2.0L
Porsche 912 export model USA 1.6L

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

61611101005
61611101005
61611101005S
92.311
92311
1620600500

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 4 products)
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About 2 IN / 2 OUT
Standard Silencers

Porsche 2 IN / 2 OUT Standard Silencers - OEM-Style Exhaust Replacement

2 IN / 2 OUT Standard Silencers are factory-style exhaust components designed to manage exhaust flow and noise levels on Porsche models with dual inlet and dual outlet exhaust systems. Engineered to match original equipment specifications, these silencers restore correct exhaust function, sound balance, and drivability while maintaining a refined, road-focused exhaust note.

Available from Design911, Porsche 2 IN / 2 OUT standard silencers are ideal for owners seeking reliable OE-style replacements or a direct-fit solution that preserves factory exhaust characteristics.

What Do 2 IN / 2 OUT Standard Silencers Do?

Standard silencers control exhaust flow and sound while maintaining factory performance levels.

Core Functions:

  • Manage exhaust gas flow from dual exhaust banks.
  • Reduce exhaust noise to OEM levels.
  • Maintain balanced exhaust backpressure.
  • Support smooth engine operation.
  • Preserve factory sound and drivability.

Proper silencer function ensures quiet, efficient exhaust operation.

Why Do Standard Exhaust Silencers Fail?

Even OE-style silencers are exposed to extreme heat and moisture, leading to eventual degradation. Common failure causes include:

  • Internal corrosion from condensation and heat cycles.
  • Rusting of external casing or pipe joints.
  • Internal baffle breakdown 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 exhaust leaks.

Why Upgrade or Replace Standard Silencers?

Replacing worn silencers restores exhaust performance and reliability.

Upgrade Benefits:

  • Restores original exhaust sound and function.
  • Ensures correct exhaust flow and backpressure.
  • Improves durability compared to aged components.
  • Maintains factory refinement and comfort.
  • Ideal solution for maintenance or restoration.

Upgrading ensures long-term exhaust reliability while preserving original driving characteristics.

Highlights

  • Porsche 2 IN / 2 OUT standard silencer replacements
  • OEM-style fitment and performance
  • Maintains factory exhaust sound levels
  • Designed for road comfort and reliability
  • Ideal for restoration and daily driving       

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