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Camshafts

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DISPLAYING 1 to 7 (of 7 products)
99310524
Product Information
Product Information
Camshaft.

oematch

Fits:
Porsche 993 C2 / C4 1994-95
with engine: 6405, 6406, 6407, 6408

Click 'Zoom in' for large parts diagram.
Diagram ref no 23


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99310524
99310524607
99310524611
99310524613
99310524716
99310524713
99310524711
99310524707

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99310524
Product Information
Product Information
Camshaft.

porsche

Fits:
Porsche 993 C2 / C4 1994-95
with engine: 6405, 6406, 6407, 6408

Click 'Zoom in' for large parts diagram.
Diagram ref no 23


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Related, superseded, cross reference or alternative numbers for comparison.

99310524
99310524607
99310524611
99310524613
99310524716
99310524713
99310524711
99310524707

The product you are viewing cross references to these numbers
99310524
Product Information
Product Information
Camshaft.

oematch

Fits:
Porsche 993 C2 / C4 1996-98
with engine: 6421, 6422, 6423, 6424

Click 'Zoom in' for large parts diagram.
Diagram ref no 23


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Related, superseded, cross reference or alternative numbers for comparison.

99310524
99310524614
99310524612
99310524609
99310524715
99310524714
99310524712
99310524709

The product you are viewing cross references to these numbers
Special Order item
99310524
Product Information
Product Information
Camshaft.

porsche

Fits:
Porsche 993 C2 / C4 1996-98
with engine: 6421, 6422, 6423, 6424

Click 'Zoom in' for large parts diagram.
Diagram ref no 23


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Related, superseded, cross reference or alternative numbers for comparison.

99310524
99310524614
99310524612
99310524609
99310524715
99310524714
99310524712
99310524709

The product you are viewing cross references to these numbers
99970731340/1
Product Information
Product Information
O-ring - 67.2 x 5.77 - for front camshaft flange. 

Sold individually; fits left or right camshaft. 

Fits:
Porsche 964 Carrera / RS 1989-94
Porsche 964 Turbo 3.6L 1993-94*

Porsche 993 Carrera / RS 1994-98
Porsche 993 Turbo / GT2 1995-98

Diagram ref. 1.

*NOTE: This o-ring is intended for later 3.6L 964 Turbo models and is not compatible with the earlier 3.3L engine.

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Related, superseded, cross reference or alternative numbers for comparison.

99970731340
99970731340

The product you are viewing cross references to these numbers
Special Order item
99970144940
Product Information
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O-ring - 8.3 x 2.4 - for the camshaft pressure pipe. 

Sold individually; x4 required per vehicle. 

Fits:
Porsche 993 Carrera 1994-98 
Porsche 993 Carrera RS 1995-96
Porsche 993 Turbo 1995-98 
Porsche 993 GT2 1995-98

Diagram ref. 13. 

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99970144940
99970144940
99310090200

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1880020005
Product Information
Product Information
Sport Camshaft Set.

schrick

Fits:
Porsche 964 Carrera 2 / Carrera 4 - 1989 to 1994
Porsche 993 Carrera 2 / Carrera 4 - 1994 to 1997
Porsche 993 Carrera S / Carrera 4S - 1994 - 1997

This is specifically designed for the 964 and 993 engines running mechanical rocker arms (MRA). It is ideal for those after performance throughout the entire rev range on the road or for light track use. 

This is a mild-mannered road camshaft that won't be too lumpy at idle. 

We source this camshaft from Schrick AVL in Germany to ensure quality, performance, reliability and precise fitment.

Camshaft Specs

Intake Cams:
Cam Lift (mm)= 8.8mm
Valve Lift (mm) = 13.2 mm
Opening Duration °CRA = 288°
Peak Timing °CRA = 114°
Valve Timing °CRA (IO-IC) = 30-78
Valve Lift at TDC (mm) = 2.1mm
Valve Clearance (mm) – 0.2mm
Bearing - Ø 49 mm with drive for power steering pump

Exhaust Cams:
Cam Lift (mm)= 8.8mm
Valve Lift (mm) = 13.2 mm
Opening Duration °CRA = 280°
Peak Timing °CRA = 114°
Valve Timing °CRA (EO-EC) = 74-26
Valve Lift at TDC (mm) = 1.7mm
Valve Clearance (mm) – 0.2mm
Bearing - Ø 49 mm with drive for power steering pump

Please note: 
These camshafts are for naturally aspirated 964 and 993 models with mechanical rocker arms (MRA). Different manufacturing tolerances require an inspection of the free clearance of all parts



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

1880020005
0005L1880-02
0005R1880-02 S2
99310524707
99310524716
99310524709
99310524715
99310524712
99310524607
99310524613
99310524609
99310524614
99310524612
96410524706
96410524724
96410524707
96410524609
96410524611

The product you are viewing cross references to these numbers
DISPLAYING 1 to 7 (of 7 products)
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About Camshafts

Precision-Engineered Camshafts – Performance, Reliability, and Power for Porsche Engines

Camshafts are the heartbeat of any Porsche engine, controlling the timing and lift of the intake and exhaust valves to ensure precise combustion and efficient power delivery. A well-tuned camshaft defines how your engine breathes, responds, and performs — whether it’s a daily-driven 911 or a track-focused GT model.

At Design911, we supply a complete range of high-quality and performance-grade camshafts engineered to meet or exceed manufacturer specifications. Each camshaft is precision-machined for exact tolerances, ensuring smooth valve operation, consistent timing, and optimal performance across all driving conditions.

What Do Camshafts Do?

Camshafts regulate how air and fuel enter and exit the combustion chamber. By controlling valve timing, lift, and duration, they play a crucial role in engine power and efficiency.

Core Functions:

  • Control valve timing for optimal engine breathing.
  • Determine power characteristics, from low-end torque to high-rpm performance.
  • Synchronise intake and exhaust cycles for smoother operation.
  • Enhance efficiency, combustion stability, and throttle response.

High-performance camshafts are often tuned to deliver sharper throttle response, higher power output, and improved torque delivery for modified or rebuilt engines.

Why Do Camshafts Fail?

Even with Porsche’s engineering excellence, camshafts are subject to wear over time. Common causes of camshaft failure include:

  • Oil starvation leading to friction and surface wear.
  • Excessive heat or poor lubrication degrading cam lobes.
  • Improper timing belt/chain tension causing misalignment or damage.
  • Mechanical fatigue due to extended mileage or racing conditions.
  • Contaminated oil introducing abrasive particles into the valvetrain.

A worn or damaged camshaft can cause loss of power, misfires, rough idle, and reduced engine efficiency — making timely replacement essential to restore peak performance.

Why Replace with Performance-Grade Camshafts?

Replacing worn components with precision-engineered camshafts restores engine reliability and maximises output. Upgraded camshafts can also provide noticeable gains in horsepower and responsiveness.

Key Benefits:

  • Restores valve timing accuracy and smooth engine operation.
  • Increases power and torque, especially in performance-tuned engines.
  • Improves fuel combustion efficiency for cleaner running.
  • Ensures long-term reliability with precision-machined surfaces and premium materials.
  • Perfect fitment with no modification required on compatible Porsche engines.

Whether maintaining a classic flat-six or upgrading a modern turbocharged engine, these camshafts are designed to deliver manufacturer-level precision with motorsport-grade durability.

Highlights:

  • Precision-engineered camshafts for Porsche models old and new.
  • Enhanced performance and reliability, meeting manufacturer standards.
  • Motorsport-grade construction ensures durability under extreme loads.
  • Improved airflow and combustion efficiency for optimal power delivery.
  • Ideal for restorations, rebuilds, and performance tuning projects.
  • Designed for seamless compatibility with Porsche flat-six, turbo, and hybrid engines.       

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