CV Boot clamp plate. Porsche 911 / 912 / 914  ›  90133219100

CV Boot Clamp Plate, For M8 CV Bolts.

The OE Match CV Boot Clamp Plate is a replacement retaining and load-spreading plate used with M8 constant-velocity joint bolts on selected classic Porsche driveshaft assemblies.

Fits:

• Porsche 911 1965-69
• Porsche 912 1965-69
• Porsche 914 1970-76

Diagram Ref No 13

Installed as part of the CV joint and boot mounting hardware, the plate sits beneath the appropriate CV bolts and helps distribute the clamping force across the boot flange and CV joint attachment area.

Although small and simple in appearance, this plate performs an important mechanical function. The CV joint connection is subjected to continuous torque, vibration, suspension movement and drivetrain loads. Correctly installed fastening hardware helps keep the joint securely attached and the CV boot correctly positioned.

A bent, corroded, cracked or damaged clamp plate can prevent the bolts from loading the joint evenly. This can contribute to poor clamping, movement around the boot flange, grease leakage or accelerated wear of the surrounding attachment hardware.

Replacing damaged or unsuitable plates during CV joint or driveshaft servicing helps restore the correct factory-style fastening arrangement.

What This Product Does:
The CV Boot Clamp Plate works with the M8 CV joint bolts to provide a firm and even clamping surface.

Its main functions are to:

• Work with M8 CV joint bolts.
• Spread bolt clamping force across the CV boot flange.
• Support secure CV joint installation.
• Help maintain even loading around the joint.
• Support correct positioning of the CV boot flange.
• Reduce concentrated loading around individual bolt holes.
• Help maintain a secure driveshaft-to-flange connection.
• Replace bent, damaged, corroded or missing original plates.
• Restore the original-style CV fastening arrangement.

Symptoms Of Wear Or Failure:
Because the plate has no moving parts, failure symptoms are usually physical or related to the joint fastening.

Signs may include:

• Bent clamp plate.
• Cracked plate.
• Heavy corrosion.
• Elongated bolt holes.
• Distorted bolt holes.
• Plate no longer sitting flat.
• Missing plate.
• Incorrect plate fitted.
• Visible movement around the CV boot flange.
• Uneven boot flange clamping.
• Grease leakage around the CV joint area.
• Loose or repeatedly loosening CV bolts.
• Damage discovered during driveshaft removal.

Why Replacement Matters:
Replacing a damaged CV Boot Clamp Plate helps restore:

• Correct bolt-load distribution.
• Proper boot flange clamping.
• Secure CV joint installation.
• Factory-style fastening hardware.
• Reduced risk of local flange distortion.
• Reliable driveshaft attachment.
• Long-term CV joint serviceability.

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

90133219100

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