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CV Boots and Kits

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8153600310
Product Information
Product Information

Rear Axle Boot Kit
Sold each - 2 required per car

Protect the rear driveline of your classic Porsche with this Rear Axle Boot Kit. This high-quality axle boot kit seals the rear swing axle assembly, preventing dirt, water and road debris from entering while retaining the essential gearbox oil that lubricates the axle components. Manufactured from durable, oil-resistant rubber, it offers excellent flexibility and long service life, making it ideal for routine maintenance, restorations or gearbox repairs.

Fits:

  • Porsche 356 1950-55
  • Porsche 356A 1955-59
  • Porsche 356B 1959-63
  • Porsche 356C 1963-65

Replacing worn axle boots before they fail helps protect expensive transmission components and ensures reliable performance for years to come.

What Does the Rear Axle Boot Do?

The rear axle boot forms a flexible seal around the swing axle, allowing the suspension to move freely while preventing gearbox oil from escaping and contaminants from entering the axle housing.

Its key functions include:

  • Retaining gearbox lubricant
  • Preventing dirt and water entering the axle assembly
  • Protecting internal driveline components
  • Allowing full suspension movement without compromising the seal

A sound axle boot is essential for maintaining the reliability of the rear transmission assembly.

Why Do Rear Axle Boots Fail?

Axle boots are constantly exposed to heat, oil, road dirt and continual suspension movement. Over time, the rubber naturally hardens and deteriorates.

Common causes of failure include:

  • Age-related cracking
  • Heat and oil contamination
  • Rubber hardening
  • Splits caused by repeated flexing
  • Damage from road debris
  • Incorrect installation or overtightened clips

Once the boot splits, gearbox oil can leak out while dirt and moisture enter the axle housing, accelerating wear of internal components.

When Should They Be Replaced?

Replacement is recommended if the boot shows any signs of deterioration, including:

  • Cracks or splits
  • Oil leaks around the axle
  • Perished or hardened rubber
  • Loose or damaged retaining clips
  • During gearbox or rear suspension repairs
  • As preventative maintenance during a restoration

Replacing a worn axle boot early is considerably less expensive than repairing damage caused by lubricant loss or contamination.

Porsche 356 Transmission & Driveline Components

The rear axle boots are among the hardest-working rubber components on a classic Porsche 356. Constant suspension movement and exposure to heat and oil eventually cause the original boots to crack, allowing lubricant to escape and contaminants to enter the driveline.

Replacing axle boots as part of routine maintenance or during gearbox servicing helps preserve the condition of expensive transmission components while ensuring reliable operation and preventing unnecessary oil leaks.

OE Match driveline components provide factory-style fitment and dependable performance, making them an excellent choice for both road cars and concours restorations.

Benefits of Replacing the Rear Axle Boot Kit

  • Prevents gearbox oil leaks
  • Protects internal driveline components
  • Keeps dirt and moisture out
  • Restores the integrity of the axle seal
  • Helps extend transmission life
  • Ideal for restoration and preventative maintenance




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

8153600310
111598021A
598200001

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About CV Boots and Kits

Porsche CV Boots & CV Boot Kits | Protect Your Driveshafts and Extend Drivetrain Life

CV boots (Constant Velocity boots) are essential components that protect your Porsche’s CV joints from dirt, debris, and moisture while retaining the grease needed for smooth operation. A properly sealed CV boot ensures consistent joint lubrication and prevents costly drivetrain wear or failure.

At Design911, we supply premium CV boots and complete CV boot kits designed to match or exceed original standards. Each boot is made from high-strength rubber or thermoplastic elastomer (TPE) materials for maximum flexibility, heat resistance, and durability. Our CV boot kits include clamps, grease, and hardware for easy installation and long-lasting protection.

Whether you’re restoring a classic Porsche or maintaining a modern model, replacing worn or damaged CV boots prevents joint damage, eliminates noise, and keeps your driveline operating smoothly.

What Do CV Boots Do?

CV boots are protective covers fitted over the CV joints on your Porsche’s driveshafts. They keep grease inside the joint while preventing dirt and contaminants from entering.

Core Functions:

  • Protect CV joints from dirt, dust, and water intrusion.
  • Retain essential lubrication for smooth articulation.
  • Maintain flexibility across suspension travel and steering angles.
  • Prevent premature wear of CV joints and driveshaft components.

Without a properly functioning CV boot, grease leaks out and contaminants enter — leading to CV joint wear, clicking noises, and eventual driveshaft failure.

Why Do CV Boots Fail or Wear Out?

Over time, CV boots are exposed to constant movement, road debris, heat, and environmental conditions, causing them to crack or split. Once damaged, they quickly lose their protective function.

Common Causes of Failure Include:

  • Age-related cracking and hardening of the rubber or TPE.
  • Tears from road debris or impact damage.
  • Heat degradation near exhaust or engine components.
  • Improper installation or stretched material.
  • Contamination leading to grease loss and corrosion.

When a CV boot splits, grease leaks out and dirt gets in — rapidly wearing down the CV joint and leading to clicking sounds, vibration, and potential driveline failure.

Why Replace Your Porsche CV Boots & Kits?

Replacing your CV boots at the first signs of wear prevents expensive CV joint or driveshaft replacement. High-quality replacement boots or complete CV boot kits ensure your Porsche’s drivetrain remains protected and operating smoothly.

Key Benefits:

  • Protects CV joints and driveshafts from premature wear.
  • Prevents grease leaks and contamination.
  • Restores quiet, smooth driveline operation.
  • Available as individual boots or complete kits with fittings.
  • Manufactured from premium rubber or thermoplastic for longevity.
  • Suitable for standard, restoration, or performance applications.

It’s always recommended to replace CV boots in pairs (inner and outer) during driveline servicing for balanced wear protection and consistent reliability.

Highlights

  • Premium-quality Porsche CV boots and CV boot kits.
  • Protects CV joints from dirt, heat, and wear.
  • Supplied with grease, clamps, and fittings for easy installation.
  • Resistant to cracking, splitting, and high temperatures.
  • Direct-fit solutions for Porsche 911, Cayman, Boxster, and other models.
  • Essential for driveline maintenance and longevity.       

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