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This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
Restore reliability to your E9x Headlights with ECS Tuning’s Premium Replacement Harness Kit.
Headlight electrical issues are a common headache for many E9x owners. Over time, the factory wiring inside Pre-LCI BMW E92 and E93 3 Series headlights, as well as all E9x M3 models equipped with factory Xenon adaptive lighting, tends to become brittle and crack. This well-known problem can lead to flickering lights, adaptive headlight malfunction warnings, or even internal shorts that cause costly damage. With genuine Xenon headlights becoming increasingly scarce, maintaining them has never been more important.
ECS Tuning offers a long-lasting solution with its Headlight Wiring Harness Repair Kit, engineered specifically to eliminate this failure point. Each harness is built from modern, heat-resistant materials and fitted with pre-terminated, OEM-style connectors for a clean, straightforward installation. The result is improved reliability and restored confidence in your lighting system.
Don’t wait until your lights fail or an adaptive headlight error appears. Replace your deteriorating factory harness with ECS Tuning’s upgraded repair kit and keep your lighting system performing as it should.
Key Features
Designed for Xenon Adaptive Headlights
OE-style fitment with enhanced insulation to resist cracking and heat damage
Complete set includes both left and right harnesses, plus integrated jump wire for full functionality
Detailed installation instructions provided for easy DIY installation
Fitment & compatibility:
All E90, E92, E93 M3
E92 Pre-LCI 328i, 328xi, 335i
E92 Pre-LCI 328i, 335i
Kit Contents:
Two headlight wiring harnesses (complete both left and right)
5x - heat shrink sleeves
18x - 22-24 gauge butt connectors
Product Development:
This headlight repair harness was developed, engineered, and quality-tested by ECS Tuning’s in-house Research & Development team. Every detail reflects ECS’s commitment to precision and durability, utilizing advanced tools and technology, including FARO laser scanning, SolidWorks 3D CAD modeling, in-house 3D printing for rapid prototyping, and long-term performance testing.
Installation & Support:
ECS Tuning provides a comprehensive installation guide that covers the entire process, from opening your OEM headlights to installing the new harness.
Griot's Ceramic Headlight Restoration Kit offers an effective solution for restoring severely oxidized and yellowed headlights to pristine clarity. Designed by Griot's Garage, this comprehensive kit is engineered to address foggy, ineffective headlights without the need for power tools. It includes proprietary oxidation removing wipes, a comfortable foam contour grip, and high-quality abrasives to eliminate failed factory coatings. The restoration process is finished with a lifetime ceramic coating from Cerakote Ceramics, ensuring long-lasting protection. The kit contains everything needed: 2 Ceramic Headlight Coating Wipes, a Contour Grip Applicator, foam-backed sanding discs (2x 1000 grit, 1x 2000 grit, 1x 3000 grit), 2 Oxidation Remover Wipes, and 2 protective nitrile gloves.
CA residents - WARNING: This product can expose you to chemicals including Methanol which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
Restore Reliability to Your E9x Headlights with ECS Tuning’s Premium Replacement Harness
Headlight electrical issues are a common headache for many E9x owners. Over time, the factory wiring inside Pre-LCI BMW E92 and E93 3 Series headlights—as well as all E9x M3 models equipped with factory Xenon adaptive lighting—tends to become brittle and crack. This well-known problem can lead to flickering lights, adaptive headlight malfunction warnings, or even internal shorts that cause costly damage. With genuine Xenon headlights becoming increasingly scarce, maintaining them has never been more important.
ECS Tuning offers a long-lasting solution with its Headlight Wiring Harness Repair Kit, engineered specifically to eliminate this failure point. Each harness is built from modern, heat-resistant materials and fitted with pre-terminated, OEM-style connectors for a clean, straightforward installation. The result is improved reliability and restored confidence in your lighting system.
Don’t wait until your lights fail or an adaptive headlight error appears. Replace your deteriorating factory harness with ECS Tuning’s upgraded repair kit and keep your lighting system performing as it should.
Key Features
Designed for Xenon Adaptive Headlights
OE-style fitment with enhanced insulation to resist cracking and heat damage
Complete set includes both left and right harnesses, plus integrated jump wire for full functionality
Detailed installation instructions provided for easy DIY installation
Fitment & compatibility:
All E90, E92, E93 M3 E92 Pre-LCI 328i, 328xi, 335i E92 Pre-LCI 328i, 335i Kit Contents:
One headlight repair harness (Fits left or right) 3x - heat shrink sleeves 9x - 22-24 gauge butt connectors Product Development:
This headlight repair harness was developed, engineered, and quality-tested by ECS Tuning’s in-house Research & Development team. Every detail reflects ECS’s commitment to precision and durability, utilizing advanced tools and technology, including FARO laser scanning, SolidWorks 3D CAD modeling, in-house 3D printing for rapid prototyping, and long-term performance testing.
Installation & Support:
ECS Tuning provides a comprehensive installation guide that covers the entire process, from opening your OEM headlights to installing the new harness.
- CLICK HERE FOR INSTALLATION INSTRUCTIONS -
Over time, road grime, salt, and moisture take a toll on the factory rear leveling rod. The original equipment often corrodes, seizes, and eventually snaps—or worse, binds up and breaks your expensive headlight leveling sensor. With this issue in mind, ECS has engineered a heavy-duty, bulletproof solution designed to outlast the car it’s installed on.
Instead of brittle OE plastic that degrades and snaps over time, this rod is constructed from high-strength, flexible polyurethane. Paired with corrosion-resistant stainless steel ball studs, it guarantees smooth articulation and prevents the binding that destroys expensive sensors. Precision-manufactured for a perfect, bolt-on fit, this upgrade requires zero modifications to replace your fragile OEM unit.
This is a direct-fit replacement for Genuine BMW part number 37146752797, restoring proper suspension-to-sensor geometry so your headlights adjust perfectly to changing loads and road conditions.