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Porsche > Cayman 987C/981C (2005-2016) > Cayman GT4 3.8L 2015-16 > Gearbox / Transmission >

Rear Differential

Rear Differential

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DISPLAYING 1 to 5 (of 5 products)
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman - 016409399B
3
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman
Special Order item
016409399B
Product Information
Product Information
Differential output shaft seal.

porsche

Fits:
For cars with manual transmission
Porsche 924 1976-88
Porsche 944 1982-91
Porsche 986 / 987 / 981 / 982 Boxster 1997>>
Porsche 987 / 981 / 982 Cayman 2005>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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Related, superseded, cross reference or alternative numbers for comparison.

016409399B
016409399B

The product you are viewing cross references to these numbers
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman - 016409399B, 314096090323, 016409399B, 15195, 190035410, 108768 - V103335
3
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman
Special Offer
016409399B/1
Product Information
Product Information
Differential output shaft seal.

oematch

Fits:
For cars with manual transmission
Porsche 924 1976-88
Porsche 944 1982-91
Porsche 986 / 987 / 981 / 982 Boxster 1997>>
Porsche 987 / 981 / 982 Cayman 2005>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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Related, superseded, cross reference or alternative numbers for comparison.

016409399B
016409399B
314096090323
016409399B
15195
190035410
108768

The product you are viewing cross references to these numbers
Friction plate upgrade kit for lsd. Porsche 997 / 991 / 981 / 718 with PDK gearbox - RD4034
2
Friction plate upgrade kit for lsd. Porsche 997 / 991 / 981 / 718 with PDK gearbox
9G130020100/1
Product Information
Product Information
Friction plate upgrade kit for limited slip differential (LSD) 


Fits:
Porsche 997 PDK
Porsche 991 PDK
Porsche 981 Boxster / Cayman PDK
Porsche 718 (982) PDK
For cars with Porsche LSD fitted - Option Code M220 (Locking differential 40 %)

Enhance Your Porsche PDK Transmission with RacingDiffs Clutch Pack
RacingDiffs LSD clutch pack fits seamlessly into the Porsche PDK Transmission (ZF 7DT-45HL), providing superior performance and durability. This kit is a must-have for Porsche Carrera 997, 991, Boxster/Cayman 981, 982, and 718 models equipped with PDK transmissions, especially for those who frequent the track.

Kit Includes:

  • Moly-Ceramics Clutch/friction discs x 4
  • Hardcore dog ear steel plates x 4

Key Features:

Superior Cooling and Viscosity:
Clutches are perforated for better cooling and excellent viscosity, effectively resisting oil build-up in the holes between dog ear plates. This design improves cooling efficiency, similar to drilled brake discs.

Enhanced Grip and Durability:
RacingDiffs plates provide more grip and superior durability, making them an absolute must-have for everyone who visits the track regularly.

High-Quality Construction:
Our clutch plates are made from top-quality materials, designed to withstand extreme conditions and provide long-lasting performance.

Why Choose RacingDiffs LSD Clutch Pack?

  • Improved Cooling: Perforated design enhances cooling efficiency.
  • Durability: Constructed from high-quality materials for exceptional longevity.
  • Enhanced Performance: Provides better traction and handling for your Porsche.

Recommended for Track Use:
For those who regularly visit the track, our clutch pack ensures your Porsche performs at its best, providing the grip and durability needed for high-performance driving.

Upgrade Your Porsche Differential:
Ensure your Porsche is equipped with the best. Upgrade to RacingDiffs LSD Clutch Pack for superior handling and performance. Order now!

Part Numbers: 0501328312, ZF 7DT-45HL, 1079 201 301

Please Note:
Friction plate upgrade kit should only be fitted by someone with the relevant knowledge and experience.

Friction plate upgrade kit for Porsche oe lsd. Porsche 987 / 981 / 718 manual - RD4033
1
Friction plate upgrade kit for Porsche oe lsd. Porsche 987 / 981 / 718 manual
Special Offer
99730002033/1
Product Information
Product Information
Friction plate upgrade kit for Porsche OE limited slip differential (LSD). 

Fits:
Porsche 987 Boxster / Cayman 2005 - 2012 - Manual gearbox
Porsche 981 Boxster / Cayman 2012 - 2016 - Manual gearbox
Porsche 718 (982) Boxster Cayman 2016>> - Manual gearbox
For cars with Porsche LSD fitted - Option Code M220 (Locking differential 40 %)

Upgrade Your Porsche Manual Gearbox with RacingDiffs Clutch Pack
RacingDiffs LSD clutch pack fits seamlessly into the Porsche Manual gearbox, providing superior performance and durability. This kit is essential for Porsche Boxster and Cayman models, ensuring enhanced traction and handling, especially for track enthusiasts.

Kit Includes:
Clutch/friction discs x 4
Hardcore dog ear steel plates x 4

Key Features:

Superior Cooling and Viscosity:
Clutches are perforated for better cooling and excellent viscosity, effectively resisting oil build-up in the holes between dog ear plates. This design improves cooling efficiency, similar to drilled brake discs.

Enhanced Grip and Durability:
RacingDiffs plates provide more grip and superior durability, making them an absolute must-have for everyone who visits the track regularly.

High-Quality Construction:
Our clutch plates are made from top-quality materials, designed to withstand extreme conditions and provide long-lasting performance.

Why Choose RacingDiffs LSD Clutch Pack?

  • Improved Cooling: Perforated design enhances cooling efficiency.
  • Durability: Constructed from high-quality materials for exceptional longevity.
  • Enhanced Performance: Provides better traction and handling for your Porsche.

Recommended for Track Use:
For those who regularly visit the track, our clutch pack ensures your Porsche performs at its best, providing the grip and durability needed for high-performance driving.

Upgrade Your Porsche Differential:
Ensure your Porsche is equipped with the best. Upgrade to RacingDiffs LSD Clutch Pack for superior handling and performance. Order now!

Please Note:
Friction plate upgrade kit should only be fitted by someone with the relevant knowledge and experience.


Hexagon head bolt M12 x 1,5 x 90mm. Porsche 981 / 718 / 991 / 992 / 970 - 9A700820900
2
Hexagon head bolt M12 x 1,5 x 90mm. Porsche 981 / 718 / 991 / 992 / 970
Special Order item
9A700820900
Product Information
Product Information
Hexagon head bolt M12 x 1,5 x 90mm
Sold each - Used in various locations

porsche

Fits:
Porsche 981 Boxster / Cayman - 2012 to 2016
Porsche 718 Boxster / Cayman - 2017 Onwards
Porsche 991.1 / Porsche 991.2 - 2012 to 2019
Porsche 992 - 2019 to 2024
Porsche 970.1 / 970.2 Panamera - 2009 to 2016 

Porsche 981 / 718 / 991 / 992 - Used for lower control arm mounting
Porsche 970 Panamera - Used for steering rack mounting and rear differential mounting

Click 'Zoom in' for large parts diagram.
Diagram ref no 4




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

9A700820900
9A700820900

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
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About Rear Differential

Porsche Rear Differentials | Precision Power Distribution for Maximum Traction and Performance

The rear differential is one of the most critical components in your Porsche’s drivetrain. It transfers engine power from the transmission to the rear wheels while allowing them to rotate at different speeds during cornering. This ensures balanced handling, traction, and stability — essential for Porsche’s trademark driving dynamics.

At Design911, we supply high-quality rear differentials and differential components engineered to meet or exceed original performance standards. Built from precision-machined gears, hardened steel housings, and performance-grade bearings, each unit ensures smooth torque distribution and dependable strength under demanding conditions.

Whether you’re maintaining a daily driver or upgrading for track use, our Porsche rear differential parts deliver improved traction, cornering precision, and long-term reliability.

What Does the Rear Differential Do?

The rear differential balances rotational speed between the rear wheels while transmitting power from the gearbox to the axles.

Core Functions:

  • Distributes torque evenly between rear wheels.
  • Allows independent wheel rotation during turns.
  • Prevents wheel slip and loss of traction.
  • Reduces drivetrain stress and enhances stability.
  • Supports optimal cornering control and handling balance.

Without a properly functioning differential, your Porsche may experience wheel spin, vibrations, or loss of power transfer — reducing both performance and safety.

Why Do Rear Differentials Fail or Wear Out?

Over time, continuous stress, torque, and heat exposure can cause differential components to wear, leading to poor lubrication and gear damage.

Common Causes of Failure Include:

  • Low or contaminated differential oil causing friction and overheating.
  • Bearing wear leading to excessive noise or vibration.
  • Gear tooth pitting or chipping from torque overload.
  • Seal failure causing oil leaks.
  • Corrosion or fatigue from moisture intrusion.

Signs of a failing differential include whining noises, clunking on acceleration, fluid leaks, or uneven tyre wear.

Why Replace or Upgrade Your Porsche Rear Differential?

Replacing a worn or damaged differential restores power delivery, traction, and drivetrain balance. Upgrading to a performance-spec or limited-slip differential (LSD) enhances handling and control — ideal for spirited road or track driving.

Key Benefits:

  • Restores smooth, balanced power distribution.
  • Eliminates noise, vibration, and gear chatter.
  • Improves traction and acceleration out of corners.
  • Extends drivetrain longevity through precise engineering.
  • Suitable for Porsche 911, Cayman, Boxster, Panamera, and classic models.
  • Available in performance or standard specifications.

Replacing the differential during gearbox or axle servicing ensures long-term reliability and optimum drivetrain efficiency.

Highlights

  • Premium Porsche rear differentials and components.
  • Precision-engineered for torque balance and durability.
  • High-strength materials for road, race, or restoration builds.
  • Reduces noise, vibration, and harshness (NVH).
  • Ideal for upgrades, rebuilds, or performance applications.
  • Compatible with manual, Tiptronic, and PDK systems.       

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