Subaru Legacy Outback BP9 Genuine HID Headlight KOITO Left Side

Subaru Headlights — Genuine KOITO HID Legacy Outback BP9 Left Side

For precision fitment and industry-leading OEM optical performance, subaru headlights sourced directly from the Japanese domestic market represent the definitive standard. This genuine KOITO HID unit — part number 100-20952, left side — is a fresh JDM import from Japan, tested before removal and supplied in the condition expected of a properly sourced OEM component. Compatible with Subaru Legacy and Outback BP and BL series vehicles across multiple chassis designations.

⚠️ Compatibility Note: Always verify your vehicle’s chassis code and match the part number before purchase. Part number 100-20952 must match your existing unit.

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Table of Contents

1. Product Specifications
2. KOITO OEM Quality Standards
3. HID Technology Overview
4. Compatibility Reference
5. Fitment Verification Guide
6. FAQ

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Product Specifications

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KOITO OEM Quality Standards

KOITO is one of Japan’s premier automotive lighting manufacturers and the primary OEM supplier to Subaru and other leading Japanese manufacturers. As an original equipment manufacturer, KOITO produces lighting components built to the precise optical, electrical and durability specifications defined by the vehicle manufacturer — ensuring full compatibility with existing vehicle systems without the adaptation or compromise associated with aftermarket alternatives.

Genuine KOITO subaru outback headlight units are constructed to withstand the operational demands of daily driving across the full range of weather conditions — sealed to OEM specification, aligned to the beam pattern geometry required by the vehicle’s original design intent and wired to the exact connector and control system standards of the BP/BL series chassis.

This unit has been tested in Japan prior to removal — the standard quality verification step for properly sourced JDM components that ensures electrical and functional integrity before export.

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HID Technology Overview

High-Intensity Discharge (HID) lighting — also designated Xenon lighting — produces illumination through an electrical arc between two tungsten electrodes within a xenon gas-filled discharge chamber. This process generates a significantly brighter, whiter light output compared to conventional halogen technology.

The optical performance advantages of HID are well-documented in automotive lighting research — greater effective illumination distance, improved peripheral coverage and a colour temperature closer to natural daylight that improves driver perception and reduces eye fatigue in extended night driving.

As a genuine OEM HID unit from KOITO, this headlight maintains the exact beam geometry and control system compatibility specified by Subaru for the BP9 and related chassis — ensuring that the HID system operates as designed within the vehicle’s ballast and levelling control architecture.

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Compatibility Reference

This genuine KOITO HID headlight is compatible with the following Subaru chassis designations. Always match part number 100-20952 first:

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Fitment Verification Guide

To confirm correct fitment before purchase, follow this verification sequence:

1. Match the part number first — locate the part number on your existing headlight unit and confirm it matches 100-20952
2. Confirm chassis code — check your vehicle’s chassis plate and compare against the compatibility list above
3. Verify left/right side — this unit is left side only. Reference the photos to confirm orientation
4. Check wiring connector — reference the coupler photos to confirm your vehicle’s connector matches

Note: The model numbers for lights and mirrors are the same on both left and right sides. If the part number on one side is damaged or difficult to read, the number can be verified on the opposite side unit.

Explore additional genuine JDM lighting components in our JDM Lighting category, or browse JDM Engines and JDM Body Parts for other quality Japanese domestic market components.

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FAQ

Are these genuine subaru headlights or aftermarket? These are genuine OEM subaru headlights manufactured by KOITO — Subaru’s original equipment lighting supplier. They are not aftermarket reproductions. The KOITO part number 100-20952 confirms OEM specification. Genuine KOITO units are built to the precise optical and electrical standards defined by Subaru, ensuring full system compatibility with the original vehicle architecture.

What is the subaru outback headlight bulb type for this unit? This unit is a complete HID (High-Intensity Discharge / Xenon) headlight assembly — not a standard halogen bulb replacement. The subaru outback headlight in HID specification uses a Xenon discharge bulb rather than a conventional halogen element. If you require a replacement bulb for an existing HID unit, reference your vehicle’s service documentation for the correct D-series Xenon bulb specification. This listing is for the complete headlight assembly.

How do I verify this headlight fits my Legacy or Outback? The most reliable fitment verification method is matching the part number — locate 100-20952 on your existing headlight unit before purchasing. Additionally, confirm your vehicle’s chassis code against the compatibility list (BP, BP5, BP9, BPE, BL, BL5, BL9, BLE). If uncertain, consult a qualified Subaru specialist with your vehicle’s chassis plate details before purchase.

Is this headlight left or right side? This listing is for the left side unit only (x1). Always confirm side orientation against the product photos before purchasing. Note that the model numbers on KOITO headlight units are the same on both left and right sides — if the part number on one side is damaged, it can be verified on the opposite unit.

What condition is this JDM headlight in? This is a fresh import from Japan, tested for function before removal. JDM sourced components of this type are removed from vehicles that have been retired under Japan’s domestic inspection system — typically at relatively low mileage and in well-maintained condition. The pre-removal testing step confirms electrical and functional integrity before export and dispatch.