Two black L20 bulb adapter holders with circular centres, red outer rings and projecting mounting tabs on a red-grey background.

LED Bulb Adapter Holder

Riglow™ L20 D2S/D4S Bulb Adapter Holders – Pair

Regular price: $30.00 BBD
Sale price: $30.00 BBD
Regular price

L20 D2S/D4S Adapter HolderListed model

Check the selected option and compatibility before ordering. Open bulb guides ↗

RIG-L20-D2D4

Availability applies to the selected option.

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BEFORE YOU ORDER

The right upgrade starts with the right fit.

Confirm the bulb socket, dimensions, connections and application relevant to this product. If unsure, send us a photo before ordering.

Listed specifications

Brand: Riglow™
Model: L20 D2S/D4S Adapter Holder
Product Type: Headlight Bulb Retaining Adapter
Bulb Type: Listed D2S/D4S retaining accessory; D2R/D4R compatibility unverified
Material: Listed black high-temperature ABS plastic; color, resin grade and temperature limits unverified
Installation: Follow vehicle and bulb supplier application-specific instructions. Have a qualified installer assess suitability. Do not assume D2S, D2R, D4S and D4R arrangements are interchangeable. Confirm seating, retention and lighting operation after suitable installation.
Fitment: Listed BMW references: E39, E60, E61, F10 and F11. Unverified application references, not confirmed fitment for every year, trim or headlight assembly. Compare original holder, mounting tabs, locking geometry, bulb base and housing clearance.
Notes: Listed package: two L20 D2S/D4S adapter holders. Bulbs, electrical conversion components and additional accessories are not established as included. Mechanical mounting accessory, not a bulb, ballast, driver or complete headlight. Mechanical fit does not establish LED or xenon electrical compatibility with the vehicle, ballast or driver. Direct-fit, OEM equivalence, plug-and-play and no-modification installation are unverified. The adapter alone does not guarantee beam alignment, reduced glare, vibration-free retention, improved visibility or maximum light output. Actual weight is unverified. LED performance ratings do not apply to the adapter itself. Riglow confirms L20 has no warranty.

Will it fit my vehicle?

Confirm the bulb socket, dimensions, connections and application relevant to this product. If unsure, send us a photo before ordering.

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Installation & warranty guidance

We do not install on site. A referral to an external technician is available when needed.

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Full product details & package contents

L20 D2S/D4S adapter holders

The Riglow™ L20 is listed as a retaining adapter for selected D2S/D4S headlight bulb installations. It is a mechanical mounting accessory, not a bulb, ballast, driver or complete headlight.

Confirm the exact application

The earlier listing names BMW E39, E60, E61, F10 and F11. These are unverified application references, not confirmed fitment for every year, trim or headlight assembly. Compare your original holder, mounting tabs, locking geometry, bulb base and housing clearance before ordering.

The earlier specification list also names D2R and D4R, but compatibility with these applications is not verified. Do not assume D2S, D2R, D4S and D4R bulbs or mounting arrangements are interchangeable. Confirm the exact bulb and headlight combination with the supplier.

Mechanical fit is not electrical compatibility

A retaining adapter does not establish that an LED or xenon bulb is electrically compatible with the vehicle, ballast or driver. Follow the vehicle and bulb supplier's application-specific instructions. Have a qualified installer assess suitability when compatibility is uncertain.

Direct-fit, OEM-equivalent, plug-and-play and no-modification installation are not established. The adapter alone does not guarantee correct beam alignment, reduced glare, vibration-free retention, improved visibility or maximum light output. Confirm suitable seating, retention and lighting operation after installation.

Listed construction and package

The earlier listing describes black, high-temperature ABS plastic. Color and material are listing details; resin grade and temperature limits have not been independently verified.

Listed package: two Riglow™ L20 D2S/D4S adapter holders. Bulbs, electrical conversion components and additional accessories are not established as included.

Warranty

L20 has no warranty.

Guides and FAQs

Mechanical Bulb Retainer and Adapter Planning

Difficulty: Application-dependent; qualified assistance recommended

Installation time: Application-dependent; no verified time estimate

Tools required

Use only tools and materials specified by the exact supplier and vehicle procedures.

Step-by-step instructions

Confirm the exact adapter, original retainer, bulb and headlight assembly. Compare mounting tabs, locking geometry, dimensions and bulb and housing clearance using supplier and vehicle records. A matching bulb designation or vehicle-brand reference alone does not confirm fit. Obtain the exact adapter and vehicle fitting procedures before disassembly. Do not force mismatched parts, cut retainers or improvise attachment methods. Check electrical and driver compatibility separately; a mechanical adapter does not establish either. Have bulb seating, retention, dust-cover clearance and beam alignment checked by a qualified installer where needed. This is planning guidance, not a product-specific fitting or modification procedure.

Notes

Shared general planning guidance, not a supplier manual or vehicle-specific service procedure. Product-specific specifications, supported functions, package contents and warranty remain governed by the individual listing and verified supplier instructions.

Will this adapter fit my headlight and bulb?

Confirm the selected adapter against your original holder and exact headlight assembly. Compare shape, locking tabs, mounting geometry, dimensions, bulb retention and available clearance. A matching bulb label or listed vehicle brand alone does not establish fitment. A mechanical retainer is not an electrical converter and does not establish LED driver compatibility. Do not force mismatched parts or assume cutting or modification is appropriate. Follow the exact supplier and vehicle procedures. Check the individual product listing for supplied quantity and warranty; no warranty or included accessory is inferred from this shared FAQ.