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Porsche 924 (1977-1988) Engine Rebuild Parts

Rocker Arms & Tappets

Rocker Arms & Tappets

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Hydraulic lifter / tappet. Porsche 924S / 928 / 944 - 92810531108
2
Hydraulic lifter / tappet. Porsche 924S / 928 / 944
Special Order item
92810531108
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Product Information
Hydraulic lifter / tappet.

Fits:
Porsche 924S 1986-88
Porsche 928 1978-82
Porsche 928S 1980-86
Porsche 944 1982-89
Porsche 944 Turbo 1986-91
Porsche 944 Turbo S 1987-88

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

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Related, superseded, cross reference or alternative numbers for comparison.

92810531108
92810531108

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Hydraulic lifter / tappet. Porsche 924S / 928 / 944 - 92810531108
3
Hydraulic lifter / tappet. Porsche 924S / 928 / 944
92810531108/1
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Product Information

Match Hydraulic Lifter / Tappet
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The OE Match Hydraulic Lifter, also known as a hydraulic tappet, is a replacement engine valve train component.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86

Diagram ref no 7

Using engine oil pressure, it automatically compensates for valve clearance, helping maintain smooth, quiet and efficient engine operation without regular manual tappet adjustment.

Confirm compatibility with the engine specification and original part number before ordering.

What Does It Do?

The hydraulic lifter automatically maintains the correct valve clearance using engine oil pressure.

This helps the camshaft operate the valves accurately while reducing mechanical noise and unnecessary valve train wear.

Why Does It Fail?

Common causes include:

  • Contaminated or ageing engine oil
  • Blocked internal oil passages
  • Insufficient oil pressure
  • Internal wear or sticking mechanisms
  • High mileage and prolonged engine use

When Should It Be Replaced?

Replace if the lifter is worn, seized, damaged or no longer maintains correct valve clearance.

Common symptoms include persistent tappet ticking, excessive valve train noise and uneven engine operation.

Checks & Diagnosis

Check engine oil level, condition and pressure before replacing the lifter.

Inspect the camshaft and associated valve train components for wear. Confirm that the noise originates from a faulty lifter rather than another engine component.

Follow Porsche workshop procedures when installing replacement tappets.

Key Features

  • OE Match replacement hydraulic lifter
  • Suitable for selected Porsche 924S, 928 and 944 engines
  • Automatically compensates for valve clearance
  • Helps reduce valve train noise
  • Supports accurate valve operation
  • Suitable for engine servicing and rebuilding

Porsche 924S / 928 / 944 Hydraulic Lifters & Engine Valve Train Parts

Hydraulic lifters are important components of the Porsche engine valve train, helping maintain correct valve clearance and consistent camshaft operation.

Replacing worn or faulty tappets can help restore quieter engine operation and reduce unnecessary wear to associated components.



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

92810531108
92810531108

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LIQQUI MOLY Hydraulic Lifter Additive 300ml - 2770
2
LIQQUI MOLY Hydraulic Lifter Additive 300ml
LM2770
Product Information
Product Information

LIQUI MOLY Hydraulic Lifter Additive – 300ml

LIQUI MOLY Hydraulic Lifter Additive is an engine oil treatment designed to reduce noisy hydraulic tappets and improve the operation of oil-fed valve train components.

Its cleaning formula helps remove deposits from oil passages and valve bores, supporting smoother engine operation and improving the function of oil-pressure-operated timing chain tensioners.

What Does It Do?

The additive cleans oil passages and valve bores, helping hydraulic lifters operate correctly. It may also reduce noise from oil-pressure-operated timing chain tensioners.

Why Do Hydraulic Lifters Become Noisy?

Common causes include:

  • Deposits restricting oil passages
  • Contaminated or ageing engine oil
  • Poor lubrication during cold starts
  • Low engine oil pressure
  • Internal lifter wear

When Should It Be Used?

Use when hydraulic tappet noise may be caused by deposits or restricted oil flow.

It can be added during routine servicing. Persistent mechanical noise requires diagnosis, as additives cannot repair worn or damaged components.

Application & Dosage

  • Add directly to the engine oil.
  • One 300ml container treats up to 6 litres of oil.
  • Adjust the dosage proportionally for larger oil capacities.
  • Can be added at any time.
  • Warm the engine after adding.
  • LIQUI MOLY recommends use after each oil change for a lasting effect.

Key Features

  • Helps reduce hydraulic tappet noise
  • Cleans oil passages and valve bores
  • Improves engine oil lubrication properties
  • Supports oil-pressure-operated timing chain tensioners
  • Suitable for compatible petrol and diesel engines
  • Tested for turbochargers and catalytic converters
  • Suitable for engines with diesel particulate filters
  • Compatible with commercially available engine oils
  • 300ml container

LIQUI MOLY Hydraulic Lifter Additives for Porsche Engines

Hydraulic lifters rely on clean engine oil and unrestricted oil passages for reliable operation.

LIQUI MOLY Hydraulic Lifter Additive helps remove deposits that can contribute to noisy tappets and restricted lubrication in compatible Porsche petrol and diesel engines.

Design911 supplies LIQUI MOLY engine additives, lubricants, oil filters and Porsche maintenance products.

DISPLAYING 1 to 3 (of 3 products)
About Rocker Arms & Tappets

Rocker Arms (Cam Followers) & Tappets – Precision Valve Train Components for Porsche Engines

The rocker arms (also known as cam followers) and tappets are crucial components within your Porsche’s valvetrain system. They convert the rotational movement of the camshaft into the vertical motion that opens and closes the engine’s valves, allowing precise control of air, fuel, and exhaust flow.

At Design911, we offer a complete range of rocker arms and tappets developed for Porsche engines across all generations. Manufactured from high-strength, wear-resistant alloys, these components ensure smooth operation, minimal friction, and long-lasting durability. Whether you’re restoring a classic air-cooled 911 or upgrading a modern GT engine, our quality valvetrain components deliver the accuracy and reliability your Porsche demands.

What Do Rocker Arms & Tappets Do?

Rocker arms and tappets form the mechanical link between the camshaft and the valves — controlling the timing and lift that determine engine breathing efficiency.

Core Functions:

  • Transmit camshaft movement to open and close the intake and exhaust valves.
  • Maintain precise valve timing for efficient combustion.
  • Reduce friction and wear through precise geometry and lubrication.
  • Ensure smooth, quiet operation across the rev range.
  • Support consistent power delivery and optimal performance.

Well-functioning rocker arms and tappets are essential for maintaining engine efficiency, throttle response, and durability.

Why Do Rocker Arms & Tappets Fail?

Continuous exposure to high temperatures, pressure, and friction makes rocker arms and tappets susceptible to wear over time.

Common Causes of Failure Include:

  • Oil starvation due to blocked passages or poor lubrication.
  • Surface wear or pitting from high mileage or contamination.
  • Excessive valve clearance leading to noise and impact damage.
  • Camshaft wear causing uneven contact and mechanical stress.
  • Material fatigue from prolonged high RPM use.

Symptoms of failure include ticking or knocking noises, loss of power, misfires, or excessive valve noise, all indicating the need for inspection and replacement.

Why Replace Valvetrain Components?

Replacing worn rocker arms or tappets restores accurate valve timing, reduces friction, and prevents camshaft or valve damage. Our high-performance, precision-engineered replacements are designed for exact fitment and long-term durability under extreme conditions.

Key Benefits:

  • Restores proper valve timing and smooth operation.
  • Reduces engine noise and friction losses.
  • Prevents premature wear of the camshaft and valves.
  • Manufactured from heat-treated, wear-resistant materials.
  • Direct-fit compatibility for a wide range of Porsche engines.
  • Ideal for rebuilds, restorations, or performance upgrades.

A reliable valvetrain system ensures your Porsche runs smoother, quieter, and more efficiently — preserving both performance and longevity.

Highlights:

  • High-strength rocker arms, cam followers, and tappets for Porsche engines.
  • Precision-machined for durability and accurate valve control.
  • Reduces noise, friction, and wear under extreme conditions.
  • Perfect for rebuilds, tuning, and classic restoration projects.
  • Direct-fit, manufacturer-quality parts for 911, Cayman, Boxster and other models.
  • Essential for smooth, consistent engine performance.

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