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connecting rod Genuine Porsche part 997103020A1
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
Price is for EACH (must be purchased as a set of 6).
Fits:
Porsche 997 3.8L C2 S / C4 S 2005-08 Coupe S / Cabrio S
Engine Type: M97.01
Weight Groups: 542-548G
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710303031
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
6 sets per engine. Price is for 1 set.
These are better than the original & have been tested by many engine rebuilds.
Top Ring and Bottom rings = Stainless CAS Nitrided
Middle Ring = Cast Iron
Fits:
Porsche 997 3.8L M97.01
ø99 mm, Ring 1,20 x 1,50 x 2,00 mm
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710305305
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

Fits:
Porsche 997 (911) Carrera S & 4S 3.8L 24v
Please note, pistons not suitable for Alusil or Lokasil coated bores
Suitable to use with Nikasil liners.
Specification
Technical information is sourced from Wössner's latest catalogue:
Part Number: K9474
Engine Type: M97.01
OE Bore Size: 99.00mm
Bore Sizes Available:
- 99.00mm - 3824.21, Compression Ratio: 11.8:1
- 99.50mm - 3862.93, Compression Ratio: 11.9:1
- 100.00mm - 3901.85, Compression Ratio: 12.0:1
Bore Size 99.00mm
Piston Size: 98.93mm
Over Size: 0mm
Displacement CC: 3824cc
Dome / Bowl Volume: 13.8cc
Wössner Comp Ratio: 11.8:1
Ring Part Number: 960XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 99.50mm
Piston Size: 99.43mm
Over Size: 0.5mm
Displacement CC: 3862cc
Dome / Bowl Volume: 13.8cc
Wössner Comp Ratio: 11.9:1
Ring Part Number: 965XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 100.00mm
Piston Size: 99.93mm
Over Size: 1mm
Displacement CC: 3901cc
Dome / Bowl Volume: 13.8cc
Wössner Comp Ratio: 12.0:1
Ring Part Number: 970XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Standard
Stroke: 82.8mm
Dome/Bowl Volume: -13.8cc
OE Comp. Ratio: 11.8:1
Comp. Height : 33mm
Valves Per Cylinder: 4
Cylinders: 6
Please CLICK HERE for Technical release – Piston / Con rod
orientation.
Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.
Price shown is for complete engine set.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
K9474
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Price is for EACH (must be purchased as a set of 6).
Fits:
Porsche 997 3.8L C2 S / C4 S 2005-08 Coupe S / Cabrio S
Engine Type: M97.01
Weight Groups: 536-542G
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710303030
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
6 sets per engine. Price is for 1 set.
Fits:
Porsche 997 3.8L M97.01
ø99 mm, Ring 1,20 x 1,50 x 2,00 mm
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710305305
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Price is for EACH (must be purchased as a set of 6).
Fits:
Porsche 997 3.8L C2S / C4S 2005-08 Coupe S / Cabrio S
PORSCHE Engine code M 97.01
99.00 Ø 6 Cylinder
24 valve
3,824
261 KW
355 HP
OE reference : 99710303028, 99710303030, 99710303031,
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710303030
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Price is for 1 set.

Fits:
Porsche 997.1 Turbo 3.6L 2007-2009
Porsche 997.2 Turbo 3.6L 2010-2013
Cylinder Bore: 100,00 mm
Component Number:
1.2mm 005 NT KV1
1.75mm 026 P F14
2.0mm 231 NT F14
Standard Size [STD]
Click 'Zoom in' for large parts diagram.
Diagram ref no 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710307170
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
Price is for 1 set.

Fits:
Porsche 997.1 Turbo 3.6L 2007-2009
Porsche 997.2 Turbo 3.6L 2010-2013
Cylinder Bore: 100,00 mm
Component Number:
1.2mm 005 NT KV1
1.75mm 026 P F14
2.0mm 231 NT F14
Standard Size [STD]
Click 'Zoom in' for large parts diagram.
Diagram ref no 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710307170
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
6 sets per engine. Price is for 1 set.
Fits:
Porsche 997 3.8L M97.01
Click 'Zoom in' for large parts diagram.
Diagram ref no 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710305305
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
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