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Engine Tinware

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91110640601/1
Product Information
Product Information
Air duct for oil cooler
Designed for classic air-cooled engines, this duct plays a crucial role in managing airflow within the engine bay. It ensures that sufficient cooling air reaches the oil cooler, which is essential for maintaining proper oil temperature and overall engine health.

Fits:
Porsche 911 - 1972 to 1989
Porsche 914-6 - 1970 to 1976

Diagram ref no 3

The air duct channels cooling air directly to the oil cooler, ensuring efficient heat dissipation from engine oil. This helps maintain stable oil temperatures and prevents overheating in air-cooled engines. Proper airflow management is critical for consistent engine performance and longevity.

Function
  Directs cooling air to the oil cooler
  Improves heat dissipation from engine oil
  Supports stable engine operating temperatures
  Ensures efficient airflow within engine tinware system

Over time, air ducts can crack, warp, or go missing during engine work. A damaged or missing duct reduces airflow to the oil cooler, leading to higher oil temperatures and potential engine wear. Replacing this component ensures proper cooling airflow, protects engine components, and maintains optimal performance - especially important for air-cooled engines.

When to replace:
  Cracked, broken, or missing duct
  Overheating or high oil temperatures
  During engine rebuild or restoration
  Poor airflow or incorrect engine tinware setup
  Preventative maintenance on classic vehicles

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Related, superseded, cross reference or alternative numbers for comparison.

91110640601
91110640600
91110640601

The product you are viewing cross references to these numbers
Special Order item
99907503903
Product Information
Product Information
M6 x 12 Bolt With Washer For Engine Cover And Fan Shroud. 

Fits: 
Porsche 911 SC 3.0L 1978>>1983
Porsche 911 3.2L 1984>>1989   
Porsche 911 Turbo (930) 3.3L 1978>>1989   

Porsche 964 Carrera 3.6L1989>>1994*
Porsche 964 Turbo 3.3L 1991>>1992 
Porsche 964 Turbo 3.6L 1993>>1995 

Porsche 993 Carrera 3.6L 1994>>1998*
Porsche 993 Turbo 3.6L 1995>>1998*

Porsche 959 2.8L 1987>>1988

*NOTE: On 964 Carrera And All 993 Models, This Bolt Is Used Only For The Engine Cover—Not For The Fan Shroud.

Diagram Ref No 10 | Fan Shroud 
Diagram Ref No 11 | Engine Cover
- The Diagrams Shown Are From A 1989 911 3.2L. Placement And Quantities Will Vary Slightly By Model. 

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

99907503903
99907503902
99907503901
9990750390C
99914300408
99914300401

The product you are viewing cross references to these numbers
99907503903/1
Product Information
Product Information
M6 x 12 bolt with washer for engine cover and fan shroud. 

Fits: 
Porsche 911 SC 3.0L 1978-83
Porsche 911 3.2L 1984-89   
Porsche 911 Turbo (930) 3.3L 1978-89   

Porsche 964 Carrera 3.6L1989-94*
Porsche 964 Turbo 3.3L 1991-92 
Porsche 964 Turbo 3.6L 1993-95 

Porsche 993 Carrera 3.6L 1994-98*
Porsche 993 Turbo 3.6L 1995-98*

Porsche 959 2.8L 1987-88

*NOTE: On 964 Carrera and all 993 models, this bolt is used only for the engine cover—not for the fan shroud.

Diagram Ref. 10 | Fan Shroud 
Diagram Ref. 11 | Engine Cover
- The diagrams shown are from a 1989 911 3.2L. Placement and quantities will vary slightly by model. 

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

99907503903
99907503902
99907503901
9990750390C
99914300408
99914300401

The product you are viewing cross references to these numbers
SC1
Product Information
Product Information
Carbon fibre fan shroud

classica

Fits
Porsche 911 - 2.4ltr
Porsche 911 - 2.7ltr / 3.0ltr
Porsche 911 - 3.2ltr

Improve the look of your engine bay with this full carbon fibre fan shroud.

These come in a high gloss finish and are a perfect fit.

These can have a 6 week lead time from order

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

SC1
93010604109
93010604113
93010604100
PCG10604104
91110690106
91110690105
91110690103
91110690102
91110690100
91110690101
91110690104

The product you are viewing cross references to these numbers
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About Engine Tinware

Engine Tinware – Precision Fit, Cooling Efficiency, and Protection for Porsche Engines

Engine tinware plays a crucial role in maintaining the cooling performance and efficiency of air-cooled Porsche engines. These panels, shrouds, and covers are designed to channel air precisely around the cylinders and heads, ensuring even temperature control and optimal performance. Without properly fitted tinware, your Porsche’s engine can overheat, lose efficiency, or suffer premature wear.

At Design911, we supply a comprehensive range of precision-engineered engine tinware crafted to match original design specifications. Each piece is manufactured from high-quality pressed steel or aluminium, ensuring accurate fitment, corrosion resistance, and durability.

Perfect for restoration projects and rebuilds, our heritage-grade tinware helps maintain proper airflow management and engine bay protection — essential for both performance and longevity.

What Does Engine Tinware Do?

In air-cooled Porsche engines, tinware serves as a thermal management system, directing airflow from the cooling fan to vital engine areas while shielding components from debris and heat.

Core Functions:

  • Directs airflow to cool cylinders, heads, and vital engine parts.
  • Prevents heat soak into the intake system and engine bay.
  • Shields electrical and mechanical components from dirt and debris.
  • Maintains efficient combustion through stable engine temperatures.

Properly fitted tinware ensures your Porsche runs at the correct operating temperature, maximising efficiency, power output, and engine life.

Why Does Engine Tinware Fail?

Although made from durable materials, tinware is constantly exposed to vibration, moisture, oil, and heat. Over time, this environment can lead to corrosion, cracking, or warping.

Common Causes of Failure Include:

  • Corrosion and rust, especially in older or unrestored vehicles.
  • Warping or fatigue from repeated heat cycles.
  • Vibration damage or poor fitment during previous rebuilds.
  • Oil contamination, softening paint or coatings.
  • Missing or ill-fitting panels, disrupting airflow and cooling balance.
Damaged or missing tinware can cause uneven cooling, leading to overheating, reduced performance, and premature engine wear — particularly in classic Porsche air-cooled engines.

Why Replace with Precision-Fit Engine Tinware?

Installing high-quality replacement tinware ensures that your Porsche’s cooling system performs as intended. Each component is precision-stamped and finished for accurate alignment and long-lasting corrosion protection.

Key Benefits:

  • Restores proper airflow and cooling efficiency.
  • Prevents overheating and extends engine life.
  • Improves under-bonnet appearance and authenticity.
  • Manufactured from premium-grade steel or aluminium.
  • Perfect fitment for classic air-cooled Porsche engines.
  • Ideal for restoration, rebuilds, or preventative maintenance.

Whether you’re restoring a 356, 911, 964 or 993 precision-engineered tinware is vital to achieving both period-correct presentation and peak mechanical performance.

Highlights:

  • Full range of engine tinware, shrouds, and panels for Porsche engines.
  • Precision-formed components for excellent fit and finish.
  • High-strength, corrosion-resistant materials for long-term reliability.
  • Restores efficient cooling and protects internal components.
  • Ideal for restoration and engine rebuild projects.
  • Designed for classic air-cooled and early water-cooled Porsche models.

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