Camshaft Lines

Cam line olive nut.



Fits:
Porsche 911 1978-89
Porsche 964 Turbo 1989-94

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Diagram ref no 10

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90010400303

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Cam line for cars with the tensioners upgraded. Cam lines tend to leak between rubber & metal joints.



Fits:
Porsche 911 1978-89

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Diagram ref no 14.

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93010734817

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Cam Line For Cars With Tensioners Upgraded.
The OE Match Cam Line for Cars with Upgraded Chain Tensioners is a high-quality replacement oil feed line designed for Porsche engines fitted with pressure-fed hydraulic chain tensioner upgrades. This critical component delivers engine oil to the chain tensioners, enabling them to maintain correct timing chain tension and ensuring reliable valve timing operation.
  

PLEASE NOTE: When Ordering This Pipe Also Order 93010734818/1 (Diagram Ref No 15) Which Is The Extension.

Fits:

• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)  

Diagram Ref No 14

Manufactured to OE specifications for fit, function and durability, this cam oil line is engineered to withstand high oil pressures, engine temperatures and vibration. It is an essential component for maintaining the performance and reliability of upgraded timing chain tensioner systems found on many classic Porsche 911 models.  

What This Product Does:

• Supplies pressurised engine oil to hydraulic chain tensioners.
• Helps maintain correct timing chain tension at all engine speeds.
• Supports accurate valve timing and engine performance.
• Reduces timing chain movement and associated wear.
• Forms a vital part of the upgraded pressure-fed chain tensioner system.
• Helps improve engine reliability and longevity.

Symptoms Of Wear Or Failure:

• Visible oil leaks around the cam housing or timing chain covers.
• Oil seepage from pipe unions or fittings.
• Cracked, corroded or damaged oil line sections.
• Reduced oil supply to chain tensioners.
• Timing chain rattling or excessive chain noise.
• Increased engine mechanical noise during start-up.
• Oil pressure loss within the tensioner circuit.
• Premature wear of timing chain and tensioner components.

Why Replacement Matters:

• The cam oil line operates in a high-temperature environment and is continuously exposed to engine vibration, oil pressure fluctuations and age-related deterioration. Over time, corrosion, fatigue or damaged fittings can lead to oil leaks or reduced oil flow to the chain tensioners.
• A failing oil feed line can compromise the operation of the hydraulic chain tensioners, potentially allowing excessive timing chain movement. If left unchecked, this can accelerate wear of the timing chain system and may affect engine timing accuracy. Replacing a worn or damaged cam line helps maintain proper oil delivery, supports reliable chain tensioner operation and protects critical engine timing components from unnecessary wear and potential failure.

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93010734817

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Cam line for cars with the tensioners upgraded. Cam lines tend to leak between rubber & metal joints.
in Yellow passivated.

Fits:
Porsche 911 1978-89

* Note when ordering this pipe also order
93010734818/1 (diagram ref no 15) which is the extension

Diagram ref no 14

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93010734817

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Cam Line Support Screw. M4 x 10.



Fits:
Porsche 911 1978-89
Porsche 964 Turbo 1989-94

This product supersedes Porsche's old part numbers:
- 90011905902

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Diagram ref no 26

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90011908801

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Left hand Cam line
Cam line for cars with the tensioners upgraded, Cam lines tend to leak between rubber & metal joints.

Fits:
Porsche 911 1978-89

Diagram ref no 1

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9301073471Y

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Left Hand Cam Line, For Cars With Tensioners Upgraded.
The OE Match Left Hand Cam Line for Cars with Upgraded Chain Tensioners is a high-quality replacement oil feed line designed specifically for the left-hand side of Porsche engines equipped with pressure-fed hydraulic chain tensioner upgrades. This vital oil line delivers pressurised engine oil directly to the left-hand chain tensioner, ensuring consistent chain tension and reliable valve timing performance.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)  

Diagram Ref No 1

Manufactured to OE specifications, this replacement cam line offers precise fitment, durability and dependable oil delivery under demanding engine operating conditions. It is an essential component for maintaining the effectiveness of the upgraded chain tensioner system commonly fitted to classic Porsche 911 models.

What This Product Does:

• Supplies pressurised engine oil to the left-hand hydraulic chain tensioner.
• Maintains correct timing chain tension throughout the engine's operating range.
• Supports accurate valve timing and engine efficiency.
• Helps reduce timing chain vibration and movement.
• Forms part of the upgraded pressure-fed chain tensioner system.
• Contributes to the long-term reliability of the engine timing assembly.

Symptoms Of Wear Or Failure:

• Oil leaks around the left-hand cam housing or timing chain cover.
• Oil seepage from unions, fittings or pipe connections.
• Corrosion, cracking or physical damage to the oil line.
• Reduced oil flow to the hydraulic chain tensioner.
• Timing chain rattle, particularly during start-up.
• Increased engine mechanical noise.
• Oil contamination around surrounding engine components.
• Premature wear of timing chain tensioner components.

Why Replacement Matters:

• The left-hand cam line operates in a high-temperature, high-vibration environment and is subjected to constant oil pressure. Over time, ageing, corrosion and fatigue can weaken the line or its fittings, resulting in oil leaks or restricted oil flow.
• A failing cam line can reduce the effectiveness of the hydraulic chain tensioner, potentially allowing excessive timing chain movement and accelerated wear of critical engine components. In severe cases, inadequate tensioner operation may affect engine timing accuracy and reliability.
• Replacing a worn or damaged left-hand cam line helps maintain proper oil delivery to the chain tensioner system, reduces the risk of oil leaks and supports reliable engine timing performance. An OE Match replacement restores the integrity of the lubrication circuit and helps protect valuable Porsche engine components from unnecessary wear.

Related reference numbers
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9301073471Y

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Camshaft oil line bracket.



Fits:
Porsche 911 1978-89
Porsche 964 Turbo 3.3L 1991-92

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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93010734100

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Camshaft Oil Line Bracket.



Fits:
Porsche 911 1978-89
Porsche 964 Turbo 3.3L 1991-92

Click 'Zoom in' for large parts diagram.
Diagram ref no 25

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93010734201

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Camshaft to chain tensioner oil feed line extension.

Fits:
Porsche 911 1978-83
** Chassis no M63Dv4070>>, M64D 3717>>, M63D 8155>> and M67D 0712>>
Porsche 911 1984-89

Diagram ref no 9

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93010734715

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Camshaft to chain tensioner oil feed line extension.

Fits:
Porsche 911 1978-83
** Chassis no M63Dv4070>>, M64D 3717>>, M63D 8155>> and M67D 0712>>
Porsche 911 1984-89

Diagram ref no 9

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93010734715

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Camshaft To Chain Tensioner Oil Feed Line Extension.
Restore the precise oil supply path for your Porsche 911’s timing chain assembly with this feed line extension. Designed for left-side feed from camshaft to chain tensioner in 911 models (1978-83 3.0 L/SC and 1984-89 3.2 L), this oil line ensures correct oil delivery, tensioner performance and timing stability.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram Ref No 9

What This Product Does:

• This oil line extension carries high-pressure oil from the camshaft feed (or appropriate oil gallery) to the timing chain tensioner mechanism. The tensioner ensures correct chain slack and timing of the engine’s valve train.
• Because the timing chain system is under constant stress (heat, RPM, vibration), the feed line must maintain integrity, correct diameter, correct routing, correct fittings and leak-free operation to protect the chain drive system.

Symptoms & Signs It May Need Replacement:

• Oil leakage around the chain-cover region, especially on the driver’s side near the timing chain housing or tensioner.
  
• Excess chain noise or slapping from the timing chain area — a failing feed line could reduce tensioner performance, allowing slack.
  
• Low oil pressure or warning associated with engine timing assembly (though this is less direct).
  
• During engine rebuild or timing chain service: if the original line is old, has suffered heat damage, is bent, kinked, or the wrong specification, replacement is highly recommended.

Why Replacement Matters:

• Protects critical components: The timing chain and tensioner are essential for proper valve timing; a failure here can lead to engine damage. A compromised oil feed line undermines that.
  
• Cost-effective preventative maintenance: Since access to the timing chain housing is complex (engine removal or major cover removal), replacing this feed line while you’re already working on the engine is much cheaper than later diagnosing a failure.

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93010734715

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Camshaft to tensioner oil line, Right

Fits:
Porsche 911 1978-89
Porsche 964 Turbo 3.3L 1991-92

Diagram ref no 15

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93010734818

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Camshaft to Tensioner Pipe - Banjo Bolt LL 3-5.



Fits:
Porsche 911 1978-83
*** Chassis numbers: M 63D 4070>>, M 64D 3717>>, M 63D 8155>> and M 67D 0712>>
Porsche 911 1984-89
Porsche 964 Turbo 3.3L 1991-92

Click 'Zoom in' for large parts diagram.
Diagram ref no 9

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N0210731

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Camshaft to Tensioner Pipe - Cutting Ring LL 8.



Fits:
Porsche 911 1978-89
Porsche 964 Turbo 3.3L 1991-92

Diagram ref no 7

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N0208251

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Camshaft to Tensioner Pipe - Pipe clamp.

Fits:
Porsche 911 1978-89
Porsche 964 Turbo 3.3L 1991-92

Diagram ref no 4

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PCG51117402

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