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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
The OE Match Engine Mount Kit is a complete replacement solution for Porsche 993 Coupe and Targa models, including Carrera 2, Carrera 4 (non-Cabrio), and Turbo variants. It includes two OE Match engine mounts along with genuine Porsche bolts and locknuts for proper installation.
SET OF 2, with bolts, washers and nuts
Fits:
Porsche 993 (911) C2 / C2S 1994 - 1997 not Cabrio
Porsche 993 (911) C4 / C4S 1994 - 1997 not Cabrio
Porsche 993 (911) Turbo 1994 - 1996
Diagram ref no 21, 22 and 10
This complete kit is designed to replace both engine mounts and associated fixing hardware in one package, ensuring a correct and reliable installation.
The kit includes:
• 2 × OE Match engine mounts (99337504909)
• 4 × Genuine Porsche bolts (90037805501)
• 2 × Genuine Porsche locknuts (99908421501)
The engine mounts are manufactured to OE specifications, providing the correct balance between support and vibration damping. Built using high-quality elastomer and metal construction, they are designed to withstand heat, load, and long-term use while maintaining consistent performance.
These mounts are suitable for both left and right positions (two required per vehicle) and replace earlier part numbers including 99337504905 and 99337504907.
Including genuine Porsche bolts and locknuts ensures proper torque retention and secure mounting - critical for maintaining drivetrain stability and avoiding issues caused by reused or stretched hardware.
This kit secures the engine to the chassis while isolating vibration and controlling engine movement during driving. It restores smooth operation, reduces noise, and improves overall drivetrain stability.
Replacing both mounts and fixings together ensures consistent performance and eliminates common causes of vibration and misalignment.
Function
• Supports and positions the engine within the chassis
• Absorbs vibration and reduces cabin noise
• Maintains correct drivetrain alignment
• Ensures secure installation with OE-spec hardware
This kit is essential for preserving both performance and comfort in classic Porsche models.
Over time, engine mounts degrade due to heat, load, and material fatigue. This can lead to excessive vibration, engine movement, and reduced driving comfort. Replacing both mounts along with new genuine hardware ensures proper installation, restores smooth engine operation, and protects surrounding drivetrain components from unnecessary stress.
When to replace
• Increased vibration felt in cabin or steering
• Clunking noises during acceleration or gear changes
• Visible wear or deterioration of mounts
• Engine movement or misalignment
• During engine or gearbox service
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99337504909
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche 992.2 Turbo 3.6L 2024>>
Sold individually; two are required per vehicle, and they fit either the left or right side.
Fits:
Models With Dynamic Engine Mounts (PR JQ3)
Porsche 992-1 Carrera 2019-24
Porsche 992-1 Turbo 2020>>
Diagram ref. 2.
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992199384F
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- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Sypder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche 992.1 (911) Dakar 3.0L 2023-24
- Porsche 992.1 GT3 CUP 4.0L 2021-24
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- 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)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 Clubsport
- Porsche Cayman GT4 RS Clubsport 2020-2024
The M10 hex nut is a versatile, high-strength fastener used across a wide range of Porsche models and assemblies. From suspension links to engine brackets, exhaust components, body fittings, and drivetrain hardware, this M10 nut ensures secure fastening and reliable torque retention where precision and durability are essential.
Manufactured to meet stringent automotive engineering standards, this nut provides excellent resistance to vibration, temperature variation, and long-term mechanical stress. Whether carrying out routine maintenance, restoring a classic model, or replacing aged hardware, this M10 hex nut is an essential component for maintaining structural integrity and correct assembly torque throughout your Porsche.
What Do M10 Hex Nuts Do?
M10 hex nuts are critical fasteners used to clamp, secure, and stabilise components throughout the vehicle.
Core Functions:
Provide
secure threaded fastening in suspension, engine, exhaust, and chassis
assemblies.
Maintain
clamping force during high-load or high-vibration conditions.
Support
correct alignment of mechanical components.
Ensure
safety and structural strength across various mounting points.
Maintain
torque settings essential for performance and reliability.
Why Do M10 Hex Nuts Fail?
Over time, fasteners experience wear, stress, and environmental exposure that can compromise their performance.
Common Causes of Failure Include:
- Corrosion from moisture, salt, or road debris.
- Thread wear from repeated installation or overtightening.
- Loss of clamping force from heat cycling or vibration.
- Rounded edges caused by incorrect tools or age.
- Metal fatigue leading to cracking or deformation.
A compromised nut can lead to loose fastenings, misalignment, and in some cases, component damage or safety issues.
Why Replace or Upgrade Your M10 Hex Nuts?
Replacing aged or worn nuts ensures proper fastener tension and maintains the reliability of the components they secure.
Key Benefits:
- Restores proper torque retention and fastening integrity.
- Prevents vibration-related loosening and component failure.
- Ensures corrosion resistance for long-term durability.
- Suitable for multiple Porsche applications across generations.
- Ideal for restoration projects, rebuilds, and preventative maintenance.
- Precision-engineered for a perfect, secure fit.
Fresh hardware is particularly important when servicing high-stress areas such as suspension mounts, exhaust fixtures, and drivetrain assemblies.
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PAF008868
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