The part numbers A117M0091S (Left) and A117M0092S (Right) refer to the OEM Lotus headlamp bracket and projector assemblies for the Series 2 (S2) Elise and Exige (2005–2007).

While the original units use halogen bulbs, there are two distinct ways to achieve “LED headlights” for these specific brackets.

1. The “Legal” Way: Complete LED Projector Kits

Since the A117M part numbers represent the bracket and housing, the most effective upgrade is to replace the entire internal projector unit with a dedicated LED projector. Unlike a simple bulb swap, these are road-legal in most regions because they have a tested and defined beam pattern.

• Greg’s Race Parts (GRP) LED Upgrade Kit: A popular plug-and-play solution specifically for 2005–2007 models. It replaces the stock halogen projectors within your existing clamshell mounts.

  • Features: Includes DRL (Daytime Running Light) functionality and high/low beam LED projectors.

  • Price: Approximately $1,349 – $1,499.

• Elise Shop / PNM LED Kits: These European-based specialists offer complete sealed LED units. They are E-marked and DOT/SAE approved, ensuring they pass MOT or equivalent inspections.

  • Price: Roughly €320 – €400 per pair.

2. The “Budget” Way: LED Bulb Conversions

You can retain your original A117M0091S/92S housings and simply swap the H1 (Dipped) and H7 (Main) halogen bulbs for LED versions.

Warning: In many regions (including the UK and parts of Europe), fitting an LED bulb into a housing designed for halogen is technically a failure for road inspections (MOT) because the light scatter can blind oncoming traffic.

• Fitment Note: S2 Lotus headlamps are extremely tight. Many high-output LED bulbs have large cooling fans on the back that will hit the inside of the front clamshell, making it impossible to re-install the access panel. Look for “fanless” or “compact” LED bulbs specifically.

3. Price & Availability for A117M0091S / A117M0092S

If your actual brackets are broken, finding brand new OEM replacements is difficult as they are often backordered or discontinued.

Installation Insight

To access these units, you must remove the front wheels and the plastic wheel arch liners. There are three main adjustment/mounting studs. If your original studs are rusted or snapped, you may need a Headlight Refurbishment Kit, which includes stainless steel studs and adjustment springs, as the A117M assemblies do not always include new hardware.