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Rear Differential

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014301485D
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Cap for transmission breather.

porsche

Fits:
Porsche (9J1) Taycan 2020>>

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Diagram ref no 21

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014301485D
014301485D

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PAD315249A
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Rear Differential Oil Pump.
Maintain dependable rear differential lubrication and original drivetrain performance with this Genuine Porsche Rear Differential Oil Pump. Manufactured to Porsche's specifications, the oil pump is designed to circulate the required lubricant within the rear differential system, helping ensure critical internal components receive adequate lubrication during operation.

Fits:
  • Porsche 9J1.1 Taycan 2020-24
  • Porsche 9J1.1 Taycan Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan 4 Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan 4S 2020-24
  • Porsche 9J1.1 Taycan 4S Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan 4S Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan GTS 2020-24
  • Porsche 9J1.1 Taycan GTS Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo 2020-24
  • Porsche 9J1.1 Taycan Turbo Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo S 2020-24
  • Porsche 9J1.1 Taycan Turbo S Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo S Sport Turismo 2020-24  

Diagram Ref No 7

The rear differential transfers torque to the driven wheels while allowing them to rotate at different speeds when cornering. This places considerable loads on internal gears, bearings, clutches, and other components. The differential oil pump supports the lubrication system by moving oil through the required areas of the differential, helping reduce friction, control operating temperatures, and protect internal components against accelerated wear.  

What This Product Does:

  • Circulates lubricant within the rear differential system.
  • Helps deliver oil to critical internal differential components.
  • Supports lubrication of gears, bearings, and associated components.
  • Helps reduce friction and mechanical wear.
  • Assists with controlling differential operating temperatures.
  • Supports correct operation of applicable differential clutch mechanisms.
  • Helps maintain dependable rear drivetrain performance.
  • Replaces a weak, intermittent, damaged, or failed differential oil pump.
  • Provides genuine Porsche fit, function, and compatibility.

Symptoms Of Wear Or Failure:
  • Rear differential or drivetrain warning messages.
  • Diagnostic fault codes relating to the differential oil pump.
  • Reduced or inconsistent differential functionality.
  • Abnormal noises from the rear differential.
  • Whining, humming, or grinding from the differential area.
  • Differential overheating or unusually high operating temperatures.
  • Changes in vehicle behaviour during acceleration or cornering.
  • Intermittent operation of electronically controlled differential functions.
  • Pump failing to operate when commanded.
  • Contaminated differential oil containing excessive metallic debris.
  • Evidence of internal differential wear associated with inadequate lubrication.

Why Replacement Matters:

  • The differential operates under substantial mechanical loads, and effective lubrication is essential for protecting its internal gears, bearings, clutch components, and other moving parts. Where an oil pump is used, reduced or failed circulation can compromise lubrication and cooling, potentially increasing friction and operating temperatures.
  • Continued operation with insufficient oil circulation may accelerate wear of expensive differential components. Excessive heat and inadequate lubrication can damage bearings, gear surfaces, clutch assemblies, seals, and other internal parts, potentially turning a pump-related fault into a considerably more extensive differential repair.
  • A faulty pump may also affect electronically controlled differential functions where hydraulic or lubricant circulation is required for correct operation. This can lead to warning messages, stored fault codes, or changes in drivetrain behaviour.
  • Replacing a worn or failed unit with this Genuine Porsche Rear Differential Oil Pump PAD315249A restores dependable oil circulation and helps maintain correct differential lubrication, temperature control, and drivetrain operation. Manufactured to Porsche's exacting standards, this genuine component provides precise fit, correct system compatibility, and dependable long-term performance.



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

PAD315249A
0ME315249B
0ME315249C
0ME315249D
PAD315249A

The product you are viewing cross references to these numbers
PAD315249A/1
Product Information
Product Information
Rear Differential Oil Pump.
Maintain reliable rear differential lubrication and dependable drivetrain performance with this Valeo Rear Differential Oil Pump. Valeo is a recognised Original Equipment supplier of automotive electrical and mechanical systems, producing high-quality replacement components designed for accurate fit, dependable operation, and long service life.

Fits:
  • Porsche 9J1.1 Taycan 2020-24
  • Porsche 9J1.1 Taycan Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan 4 Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan 4S 2020-24
  • Porsche 9J1.1 Taycan 4S Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan 4S Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan GTS 2020-24
  • Porsche 9J1.1 Taycan GTS Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo 2020-24
  • Porsche 9J1.1 Taycan Turbo Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo Sport Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo S 2020-24
  • Porsche 9J1.1 Taycan Turbo S Cross Turismo 2020-24
  • Porsche 9J1.1 Taycan Turbo S Sport Turismo 2020-24  

Diagram Ref No 7

The rear differential is responsible for distributing torque to the driven wheels while allowing them to rotate at different speeds during cornering. Its internal gears, bearings, clutch components, and other moving parts operate under significant mechanical loads and require effective lubrication. The differential oil pump helps circulate the specified lubricant through the system, supporting lubrication, heat management, and correct operation of applicable differential functions.  

What This Product Does:

  • Circulates lubricant within the rear differential system.
  • Helps deliver oil to critical internal differential components.
  • Supports lubrication of gears, bearings, and associated components.
  • Helps reduce friction and accelerated mechanical wear.
  • Assists with managing differential operating temperatures.
  • Supports applicable differential clutch or control functions.
  • Helps maintain consistent rear drivetrain operation.
  • Replaces a weak, intermittent, damaged, or failed oil pump.
  • Provides an OE-quality fit for compatible applications.


Symptoms Of Wear Or Failure:
  • Rear differential or drivetrain warning messages.
  • Diagnostic fault codes relating to the differential oil pump.
  • Pump failing to operate when commanded.
  • Intermittent differential system operation.
  • Reduced or inconsistent differential functionality.
  • Abnormal whining, humming, or grinding from the differential area.
  • Differential operating temperatures becoming unusually high.
  • Changes in vehicle behaviour during acceleration or cornering.
  • Electronically controlled differential functions becoming unavailable.
  • Contaminated differential oil containing excessive metallic debris.
  • Evidence of internal differential wear associated with inadequate lubrication.

Why Replacement Matters:

  • Correct lubrication is essential to the reliability and service life of the rear differential. Its internal gears, bearings, and other moving components operate under substantial loads, generating friction and heat during normal driving. Where an oil pump is used to provide controlled lubricant circulation, deterioration of the pump can compromise the differential's lubrication and temperature management.
  • Continued operation with insufficient oil circulation can accelerate wear and potentially damage expensive internal components. Excessive friction and temperature may affect gear surfaces, bearings, clutch assemblies, seals, and other differential parts, potentially turning a relatively isolated pump fault into a more extensive drivetrain repair.
  • Where the differential uses electronically controlled clutch or torque-management functions, a pump-related fault may also affect system operation and trigger drivetrain warnings or stored diagnostic fault codes.
  • Replacing a worn or failed unit with this Valeo Rear Differential Oil Pump restores dependable lubricant circulation and helps maintain correct differential lubrication, temperature management, and drivetrain performance. Manufactured to Valeo's high-quality standards, this replacement pump provides accurate fit, reliable operation, and dependable long-term service for Porsche maintenance and repair.



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

PAD315249A
0ME315249B
0ME315249C
0ME315249D
PAD315249A

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 products)
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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