

The Porsche Headlamp Back Cover is a genuine OEM part designed to protect and seal the rear of the headlight unit on Porsche 911 (997) models equipped with Xenon headlights and directional beam systems.
Fits:
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
603 - Xenon Plus Dynamic Cornering Light
What This Product Does:
Protects the rear of the headlamp unit. It covers the bulb/opening at the rear of the headlight housing to keep out dust, moisture, debris, and other contaminants. Without a proper cover, the headlamp internals (bulb base, electrical connections, reflectors) can get exposed and degrade.
Symptoms Of A Worn, Missing Or Faulty Cover:
- There is visible dust, dirt, or moisture inside the headlamp (fogging of lens, condensation).
- The bulb wiring or connectors are getting dirty, corroded, or oxidising.
- The headlamp bulb is more likely to fail prematurely because of exposure to moisture or debris.
- Unwanted noise or slight leaks from the headlamp housing area.
- The cover is missing, cracked, warped, or doesn’t seal properly.
Why Replacement Matters:
- Protects light output and longevity of bulbs: keeping moisture and contaminants out helps the Xenon bulbs perform correctly and last longer.
- Maintains the integrity of the headlamp unit (reflectors, lens, internal wiring) by keeping the internal environment sealed.
- Prevents electrical / corrosion issues in bulb socket, connectors, internal reflectors or aim/beam adjusters.
- Avoids more expensive issues: sometimes a poor seal can lead to water damage that’s more costly than just replacing the cap.
Diagram Ref No 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99763120
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13