21001661 headlamp – Description

21001661 headlamp is an RHD, manual-adjust left headlamp with a square connector, supplied without bulbs and suitable for and compatible with VOLVO FH and FM vehicles in the mid-2000s. Designed as a direct replacement assembly, it allows workshops to restore forward lighting performance on long-distance tractors and regional distribution trucks built on FH and FM platforms compatible with VOLVO.

The reflector, lens and housing geometry of the 21001661 headlamp are tuned to cab profiles used on FH and FM trucks suitable for and compatible with VOLVO, supporting a defined dipped-beam cut-off and strong main-beam reach without excessive glare. The square connector layout and RHD configuration make this lamp well suited to markets where vehicles compatible with VOLVO operate on the left-hand side of the road, while manual adjusters allow precise beam aiming during workshop setup.

In OE documentation the 21001661 headlamp is linked to related references 20861581, 20762996, 20713718, 20360896 as well as complementary left-side part families such as 20360898, 20752993, 20762992, 20861575, 20861583, 20862575, 21001663 , all associated with FH and FM chassis suitable for and compatible with VOLVO. Grouping these references into a single 21001661 headlamp stocking item simplifies inventory for distributors who support mixed-age fleets of Scandinavian heavy trucks.

Built on a durable housing with an E-marked optical system, the 21001661 headlamp is intended for professional repair and fleet maintenance programmes using vehicles suitable for and compatible with VOLVO. When combined with regulation-approved bulbs and correct alignment procedures, it helps restore both night-time visibility and the original visual signature of FH and FM cabs in demanding long-haul service.

Bulk Purchase Benefits

For distributors and fleets operating vehicles suitable for and compatible with VOLVO FH and FM trucks, the 21001661 headlamp provides an efficient right-hand-drive solution for left-side replacements. Because it is tied to multiple OE references across FH/FM model years, stocking this single item can cover a wide range of repair scenarios.

Clearly labelled cartons that highlight 21001661 headlamp and its cross-reference numbers help warehouse teams quickly identify the correct left lamp for VOLVO-compatible vehicles, reducing picking errors and downtime during urgent repairs. This is especially useful for parts hubs supporting international fleets where FH and FM trucks operate in mixed traffic and climate conditions.

Large fleet operators using vehicles suitable for and compatible with VOLVO can integrate the 21001661 headlamp into standard preventive-maintenance kits, replacing aged or UV-hazed lamps before they fail road inspections. Optimised outer packaging is suitable for palletisation, making it easier to ship larger quantities to regional depots and remote workshops.

DIY Replacement Guide

Before working on the 21001661 headlamp, park the vehicle suitable for and compatible with VOLVO FH or FM on level ground, apply the parking brake and follow local workshop safety rules. Switch off all exterior lights, and if required, isolate the battery according to your fleet procedures.

Access the left headlamp area by opening the service flap or removing any trim pieces specified for FH/FM cabs suitable for and compatible with VOLVO. Support the lamp body while loosening the fasteners, then gently withdraw the assembly from the aperture so that the square connector and any auxiliary plugs can be unplugged without stressing the wiring.

Examine the harness, connector pins and sealing surfaces for corrosion, moisture traces or damaged insulation on vehicles suitable for and compatible with VOLVO. Install suitable approved bulbs into the 21001661 headlamp, avoiding direct contact with glass. Position the new lamp in the aperture, ensure all locating points seat correctly and tighten the fixings evenly to keep the lens aligned with the surrounding panel.

Reconnect the square connector, restore power and test dipped beam, main beam and position lights on a beam-aiming screen. Adjust the manual aiming screws according to alignment data for FH/FM trucks compatible with VOLVO, and re-check lamp security after the first few hundred kilometres of operation.

Compliance Statement

The 21001661 headlamp uses automotive-grade reflector coatings, lens materials and housings chosen for long-term use on vehicles suitable for and compatible with VOLVO FH and FM platforms. When equipped with regulation-approved bulbs and aimed correctly, its E-marked optical system supports compliance with common European road-lighting requirements.

Robust sealing and drainage paths are designed to help limit dust and moisture ingress on high-mileage trucks suitable for and compatible with VOLVO, even in harsh climates and mixed on-/off-highway duty. Regular inspection of lens clarity, mounting hardware and beam setting is recommended as part of safety-focused fleet maintenance programmes.

This product is intended as a service replacement part for professional workshops and distributors supporting vehicles suitable for or compatible with VOLVO. Final legal conformity depends on correct installation, the use of approved bulbs and adherence to local headlamp aiming and inspection standards.

Suitable for and compatible with VOLVO FH & FM (RHD)