Porsche PDLS Plus LED Headlights 99163117213, 99163117212
OEM Porsche 911 (991.1) Full LED Headlights with PDLS+ (Porsche Dynamic Light System Plus) represent the flagship lighting technology for the first-generation 991.
The part numbers 991.631.172.13 (Right) and 991.631.171.12 (Left—noting the sequence for the pair) identify the Silver/Chrome internal housing variant. These are the highly desirable “four-dot” LED units that debuted on the 991.1 Turbo S and were optional across the Carrera and GT3 range.
Technical Specifications & Identification
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Technology: Full LED (Static and Dynamic).
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PDLS+ Features: * Dynamic High Beam: Automatically adjusts the light range and width based on oncoming traffic and vehicles ahead.
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Intersection Assistant: Broadens the light beam when approaching junctions (requires PCM navigation data).
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Four-Point DRL: The signature Porsche “four-dot” daytime running light design.
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Aesthetics: Silver internal shroud (standard on Turbo and high-spec Carrera models).
Fitment & Compatibility
These headlights are specific to the 991.1 generation (2012–2016).
| Model | Year Range | Compatibility Note |
| 911 Carrera / S / GTS | 2012–2016 | Direct upgrade (requires coding/conversion harness if moving from Bi-Xenon). |
| 911 Turbo / Turbo S | 2014–2016 | Standard equipment or direct replacement. |
| 911 GT3 / RS | 2014–2016 | Direct fit. |
| 991.2 (2017+) | 2017–2019 | No. Housing shape and wiring pins are different. |
Headline: Genuine Porsche 911 (991.1) Full LED PDLS+ Headlights (L+R) | 99163117112 99163117213
“For sale is a premium pair of OEM Porsche 991.1 Full LED Headlights equipped with PDLS+ technology. These units feature the iconic silver-shrouded four-point LED daytime running lights, providing a modern and high-tech front-end aesthetic. Fully functional with active cornering and dynamic high-beam assistance. Removed from a low-mileage vehicle; lenses are clear and free of major stone chips or UV yellowing.
Part Numbers: 991.631.171.12 (L) & 991.631.172.13 (R).
Condition: Grade A / Like New. Perfect for a high-end replacement or front-end refresh.”
Technical Installation & Inspection
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Modules/Ballasts: These assemblies utilize three separate control modules bolted to the back of the housing. If you are selling these as “complete,” verify that the LED Power Modules are included.
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Conversion Note: Upgrading a 991.1 from Bi-Xenon to Full LED is a popular modification, but it is not a simple swap. It requires a dedicated conversion harness and PIWIS III coding to ensure the fans and dynamic motors function correctly.
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Lens Integrity: Check for “crazing” (internal heat-related micro-cracks) which can sometimes occur on early LED units.
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