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- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Sold each, 24 required.
Fits:
Porsche 993 1994-98
Diagram ref no 26
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90006734601
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
Price is for each.
Fits:
Porsche 957 Cayenne 3.0L DIESEL 2009-10
Porsche 958 Cayenne 3.0L DIESEL 2011>>
Porsche 958 Cayenne 4.2L V8 DIESEL 2013>>
Porsche Macan 3.0L V6 TDI 2014>>
Porsche 970 Panamera 3.0L DIESEL 2012>>
Click 'Zoom in' for large parts diagram.
Diagram Ref No 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510541720
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
Price is for each.
Fits:
Porsche 957 Cayenne 3.0L DIESEL 2009-10
Porsche 958 Cayenne 3.0L DIESEL 2011>>
Porsche 958 Cayenne 4.2L V8 DIESEL 2013>>
Porsche Macan 3.0L V6 TDI 2014>>
Porsche 970 Panamera 3.0L DIESEL 2012>>
Click 'Zoom in' for large parts diagram.
Diagram Ref No 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510541720
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 958 Cayenne S V8 4.2L Diesel (382Hp) 2010-17
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
Diesel Engine Hydraulic Tappet / Valve Lifter
This engine hydraulic tappet (also known as a hydraulic valve
lifter) is a precision component used in Porsche diesel engines to
maintain correct valve clearance automatically. By using engine oil pressure,
the tappet ensures smooth valve operation, quiet running and consistent
performance across all driving conditions.
Fits:
Diagram ref no 11
In modern Porsche diesel engines, hydraulic tappets play a crucial role in durability, refinement and emissions control—making them an essential service and repair component.
What Does an Engine Hydraulic Tappet Do?
Hydraulic tappets sit between the camshaft and valves, using oil
pressure to compensate for thermal expansion and component wear. This allows
the valve train to operate with:
- Correct valve timing and lift
- Reduced mechanical noise
- Improved combustion efficiency
- Lower internal engine wear
By automatically adjusting clearance, hydraulic tappets eliminate the need for manual valve adjustment and help maintain optimal engine performance throughout the rev range.
Why Do Hydraulic Tappets Fail on Porsche Diesel Engines?
Over time, hydraulic tappets are subject to heat, oil contamination
and mechanical stress, particularly in high-torque diesel engines.
Common
causes of failure include:
- Oil sludge or poor lubrication
- Wear to internal check valves
- Loss of hydraulic pressure retention
- Extended oil change intervals
- Contaminated or incorrect oil grades
Symptoms of worn or failing tappets may include:
Ticking or tapping noises from the cylinder head Rough idle or misfiring Reduced engine efficiency Increased valve train wearWhy Replace Worn Hydraulic Tappets?
Replacing worn hydraulic tappets restores:
- Quiet and smooth engine operation
- Correct valve timing and combustion
- Reduced wear on camshafts and valves
- Long-term engine reliability
Ignoring tappet wear can lead to accelerated damage to the camshaft and valve train, resulting in significantly higher repair costs.
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958109521
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