Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram
Porsche specialists based in the UK
Porsche > 993 (911) (1994-1998) > 993 (911) GT2 1994-97 > Engine Tuning >

Camshaft Covers

DISPLAYING 1 to 1 (of 1 products)
Valve covers (SET OF 2) UPPER. Porsche 993 Billet aluminium - 99310511505 - M13
5
Valve covers (SET OF 2) UPPER. Porsche 993 Billet aluminium
M13
Product Information
Product Information
Rennline Billet Aluminium Valve Cover replaces OE 99310511505 UPPER.
SET OF 2

rennline

Fits:
Porsche 993 1995-98
Porsche 993 Turbo

Tired of oil puddles in the driveway? Rennline has the solution with our new billet, fully CNC machined valve covers. These valve covers are a direct bolt on replacement for your flimsy leaking factory covers, and are machined to accept the reusable OEM gaskets (available separately). With the corrosion resistant finish, chamfered edges, and tight gasket fitment, these valve covers are simply the best on the market. Available in Anodized clear or black finishes, or powdercoat red all with or without the fins brushed. Also included are the spark plug wire retainers and retainer hardware for a clean installation.

Note: Pictures may not show actual product.

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Related, superseded, cross reference or alternative numbers for comparison.

M13
99310511505

The product you are viewing cross references to these numbers
DISPLAYING 1 to 1 (of 1 products)
Also found on these pages
About Camshaft Covers

Porsche Camshaft Covers | Engine Sealing & Reliability Upgrades

Camshaft Covers seal and protect the camshaft housings, retaining engine oil while shielding vital valvetrain components from contamination. In Porsche engines, camshaft covers play a critical role in maintaining correct oil pressure, preventing leaks, and ensuring long-term valvetrain reliability—particularly in high-mileage or performance-driven vehicles.

Available from Design911, this range of Porsche camshaft covers includes upgraded and performance-focused solutions designed to improve sealing, durability, and resistance to heat-related distortion under demanding operating conditions.

What Do Camshaft Covers Do?

Camshaft covers enclose the camshaft housings and maintain a sealed lubrication environment.

Core Functions:

  • Retain engine oil within the camshaft housing.
  • Protect camshafts and valvetrain components.
  • Maintain correct oil pressure to the top end.
  • Prevent contamination from dirt and debris.
  • Support reliable valve timing and operation.

Properly functioning camshaft covers are essential for engine health and efficiency.

Why Do Camshaft Covers Fail?

Over time, standard camshaft covers can degrade due to heat, pressure, and material fatigue. Common failure causes include:

  • Warping or distortion from repeated heat cycles.
  • Gasket failure leading to oil leaks.
  • Cracking of plastic or composite covers.
  • Seal hardening due to age and temperature exposure.
  • Increased crankcase pressure in tuned engines.

Failed camshaft covers can cause oil loss, misfires, and accelerated valvetrain wear.

Why Upgrade Camshaft Covers?

Upgraded camshaft covers are designed to improve durability and sealing performance.

Upgrade Benefits:

  • Improved resistance to heat distortion.
  • Enhanced sealing surfaces to reduce oil leaks.
  • Stronger materials for long-term reliability.
  • Ideal for high-mileage or performance engines.
  • Supports clean, consistent top-end lubrication.

Upgrading camshaft covers helps protect the valvetrain and maintain engine performance under demanding conditions.

Highlights

  • Porsche camshaft covers and sealing upgrades
  • Improved oil retention and leak prevention
  • Designed for performance and reliability
  • Ideal for rebuilds and high-mileage engines
  • Supports long-term valvetrain health       

You may also like
Popular Models