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Catalytic converter repair flanges and mounting hardware kit. Porsche 964 C2 / C4 / RS ❭ 9M96411104205KIT
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Fits:
Porsche 964 (911) C2 1989-93
Porsche 964 (911) C4 1989-93
Porsche 964 (911) RS 3.6L 1991-93
Porsche 964 (911) RS 3.8L 1991-93
Kit Includes
2 x Catalytic converter / heat exchanger cross over flange
1 x Catalytic converter gasket
1 x Heat exchanger gasket
6 x Heat exchanger to cylinder head seal ring
4 x Heat exchanger barrel nut
16 x Exhaust lock nut
8 x Exhaust bolt M8 x 40
Ninemeister Converter Repair Flange
Over time, age, heat cycles, and corrosion take their toll on Porsche exhaust systems. A common weak point is the catalytic converter flange, which can corrode and eventually disintegrate. When this happens, it compromises the seal in your exhaust system, leading to exhaust leaks, loss of performance, and increased noise.
The Ninemeister repair flange is a high-quality replacement solution designed specifically to restore your Porsche’s exhaust integrity.
Key Features
- Direct
Repair Solution – allows you to remove the corroded flange and re-weld
this precision-machined replacement in place.
- Durable
Construction – built to withstand the extreme heat and corrosive
conditions of Porsche exhaust systems.
- Restores
Exhaust Sealing – eliminates leaks, restores back pressure, and
ensures smooth engine performance.
- Cost-Effective
Repair – no need to replace the entire catalytic converter when only
the flange is damaged.
- Tailored Fitment – engineered to match Porsche specifications for proper alignment and fit.
Why Replace a Corroded Converter Flange?
- Eliminate
Exhaust Leaks – prevent harmful gases from escaping and affecting
cabin safety.
- Restore
Performance – exhaust leaks reduce back pressure, causing poor
throttle response and reduced efficiency.
- Prevent
Further Damage – corrosion at the flange can spread, leading to costly
catalytic converter or exhaust system replacements.
- Long-Term Reliability – a fresh flange ensures your exhaust remains structurally sound for years to come.
The Ninemeister catalytic converter repair flange provides a reliable, cost-effective fix for corroded catalytic converter
flanges, helping you keep your Porsche exhaust system safe, efficient, and true
to factory performance.
Section of diagram ref no 1, 3, 4, 5, 6, 7, 8 and 12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9M96411104205KIT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche Boxster 718 2.0L Manual (300 Bhp)
- Porsche Boxster 718 2.0L PDK (300 Bhp)
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster T 718 2.0L Manual (300 Bhp)
- Porsche Boxster T 718 2.0L PDK (300 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman 718 2.0L Manual (300Bhp)
- Porsche Cayman 718 2.0L PDK (300Bhp)
- Porsche Cayman S 718 2.5L Manual (350Bhp)
- Porsche Cayman S 718 2.5L PDK (350Bhp)
- Porsche Cayman T 718 2.0L Manual (300Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)

Fits
2016 onwards
Porsche 718 Boxster 2.0Ltr
Porsche 718 Boxster S 2.5Ltr
Porsche 718 Boxster T 2.0Ltr
Porsche 718 Boxster GTS 2.5Ltr
Porsche 718 Cayman 2.0Ltr
Porsche 718 Cayman S 2.5Ltr
Porsche 718 Cayman T 2.0Ltr
Porsche 718 Cayman GTS 2.5Ltr
Stainless steel Sports Exhaust catalytic converter.
TFL Italy is a company specialising in the production of exhaust systems for sports cars.
At the basis of our achievements there are skills and experience, attention and professionalism.
We have the most innovative and cutting edge equipment that allows us to carry out all metal
processing in house.
We have machinery for laser cutting of sheet metal and tubes; for punching, bending and
calendaring sheet metal; for band and disc cutting.
We use the best tools for TIG and MIG welding and liquid and powder painting.
In our design office we take care of rapid prototyping through the use of innovative 3D scanners.
All this allows us to guarantee precise workmanship capable of ensuring resistance and quality.
This allows us to produce exhaust systems for sports cars of all sizes and types,
suitable for the best vehicles on the market.
We carry out each job with the utmost professionalism, from design to testing
for road homologation.
We value the performance and technical characteristics of sports car exhausts
but we do not put design aside.
TFL Italy offers a wide range of solutions to meet the different needs and preferences
of each customer
Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
P0.010.C01
The product you are viewing cross references to these numbers
- Porsche Boxster 718 2.0L Manual (300 Bhp)
- Porsche Boxster 718 2.0L PDK (300 Bhp)
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster T 718 2.0L Manual (300 Bhp)
- Porsche Boxster T 718 2.0L PDK (300 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman 718 2.0L Manual (300Bhp)
- Porsche Cayman 718 2.0L PDK (300Bhp)
- Porsche Cayman S 718 2.5L Manual (350Bhp)
- Porsche Cayman S 718 2.5L PDK (350Bhp)
- Porsche Cayman T 718 2.0L Manual (300Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)

Fits
2016 onwards
Porsche 718 Boxster 2.0Ltr
Porsche 718 Boxster S 2.5Ltr
Porsche 718 Boxster T 2.0Ltr
Porsche 718 Boxster GTS 2.5Ltr
Porsche 718 Cayman 2.0Ltr
Porsche 718 Cayman S 2.5Ltr
Porsche 718 Cayman T 2.0Ltr
Porsche 718 Cayman GTS 2.5Ltr
Stainless steel Sports Exhaust catalytic converter delete pipe
TFL Italy is a company specialising in the production of exhaust systems for sports cars.
At the basis of our achievements there are skills and experience, attention and professionalism.
We have the most innovative and cutting edge equipment that allows us to carry out all metal
processing in house.
We have machinery for laser cutting of sheet metal and tubes; for punching, bending and
calendaring sheet metal; for band and disc cutting.
We use the best tools for TIG and MIG welding and liquid and powder painting.
In our design office we take care of rapid prototyping through the use of innovative 3D scanners.
All this allows us to guarantee precise workmanship capable of ensuring resistance and quality.
This allows us to produce exhaust systems for sports cars of all sizes and types,
suitable for the best vehicles on the market.
We carry out each job with the utmost professionalism, from design to testing
for road homologation.
We value the performance and technical characteristics of sports car exhausts
but we do not put design aside.
TFL Italy offers a wide range of solutions to meet the different needs and preferences
of each customer
Please note: sports catalytic converters or bypass pipes do have type approval and may not be legally installed on vehicles manufactured after 1st March 2001. They can not be used on a public road and are not MOT compliant, they are designed for race and track cars only.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
P0.011.C01
The product you are viewing cross references to these numbers
- Porsche Boxster 718 2.0L Manual (300 Bhp)
- Porsche Boxster 718 2.0L PDK (300 Bhp)
- Porsche Boxster S 718 2.5L Manual (350 Bhp)
- Porsche Boxster S 718 2.5L PDK (350 Bhp)
- Porsche Boxster T 718 2.0L Manual (300 Bhp)
- Porsche Boxster T 718 2.0L PDK (300 Bhp)
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman 718 2.0L Manual (300Bhp)
- Porsche Cayman 718 2.0L PDK (300Bhp)
- Porsche Cayman S 718 2.5L Manual (350Bhp)
- Porsche Cayman S 718 2.5L PDK (350Bhp)
- Porsche Cayman T 718 2.0L Manual (300Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)

Fits:
Porsche 718 Boxster / Cayman 2.0ltr
Porsche 718 Boxster / Cayman T 2.0ltr
Porsche 718 Boxster / Cayman S 2.5ltr
Porsche 718 Boxster / Cayman GTS 2.5ltr
To be installed only as a full kit with
248721 or 248711 - Downpipe (with or without Catalytic converter)
248934 - Rear silencer "Racing"
248926 x 1 / 248956 x 1 / 248976 x 1 - Tailpipes
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
248712
The product you are viewing cross references to these numbers
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