Hose Clamp, B19 X 12. Porsche 955 / 957 / 958 Cayenne / 970 Panamera 2003-18  ❭  99951265209

Hose Clamp, B19 X 12.
The Hose Clamp B19 x 12 is a genuine Porsche OEM clamp designed to securely fasten hoses to pipes and fittings across the vehicle’s cooling, heating, and fluid systems. Manufactured to Porsche specifications, it applies consistent clamping force to create a reliable, leak-free seal and keep hoses firmly in place under pressure, heat, and vibration.  
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Fits:

• Porsche 955 Cayenne S 4.5L V8 2003-06
• Porsche 955 Cayenne Turbo 4.5L 2003-06
• Porsche 955 Cayenne Turbo S 4.5L 2006>>
• Porsche 957 Cayenne S/GTS 4.8L 2007-10
• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
• Porsche 958 Cayenne S V8 4.8L Petrol 400HP 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol 400HP 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol 500HP 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol 550HP 2010-17
• Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
• Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
• Porsche 970.1 Panamera S V8 4.8L 2009-13
• Porsche 970.1 Panamera 4S V8 4.8L 2009-13
• Porsche 970.1 Panamera GTS V8 4.8L 2011-13
• Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
• Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
• Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
• Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
• Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
• Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
• Porsche 970.2 Panamera Turbo V8 Executive 2014-16
• Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16  

Diagram Ref No 8

What This Product Does:

• Clamps hoses in place so they do not slip off under pressure or vibration.
• Creates a tight seal between the hose and the connection point to prevent fluid or air leaks.
  
• Maintains proper system pressure, especially in coolant, heater, and other fluid or vacuum hose circuits.

Symptoms Of Wear Or Failure:

• Coolant or other fluid may seep from the hose connection if the clamp loses tension.
• A weak clamp may allow the hose to move or partially slide off the fitting.
• The clamp may become stretched, stripped, or deformed, preventing it from holding the hose securely.
• Corrosion weakens the clamp and reduces clamping force, increasing the chance of leaks or failure.
• A damaged band may apply uneven pressure, resulting in an unreliable seal.
• If the clamp is used on coolant/heater hoses, failure can lead to low coolant level, weak cabin heating, overheating

Why Replacement Matters:

• Prevents fluid leaks by maintaining a tight, secure seal at the hose connection.
• Keeps hoses firmly in place, reducing the risk of hoses slipping off under pressure or vibration.
  
• Maintains proper system pressure, which is essential for cooling, heating, and other fluid circuits to work correctly.
  
• Helps avoid secondary damage, as leaking coolant or fluids can harm nearby components, sensors, and hoses.
  
• Ensures long-term reliability, especially in high-heat engine bay environments where clamps fatigue over time.

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

99951265209

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