3980926 main mirror – Description

3980926 main mirror is a complete exterior mirror assembly designed for stable rear visibility and consistent adjustment on vehicles compatible with VOLVO truck platforms. OE references supported: 3980926, 21103766, 3980947.

In daily fleet service, a damaged mirror can cause vibration blur, unstable alignment after adjustment, and reduced confidence during lane changes and yard maneuvers. This 3980926 main mirror is intended to restore a steady view and reliable positioning by matching the original mounting configuration. For mixed inventories and cab variants, confirm arm interface, housing shape, and connector layout against the OE references before ordering.

Application suitable for (verify by OE reference and mounting configuration): vehicles compatible with VOLVO FH12 (1993), VOLVO FM10 (1998), VOLVO FM12 (1998), and VOLVO NH (1999). Packing weight: 4.85 kg. Quantity in box: 1.

Bulk Purchase Benefits

• 1 pc/box supports accurate receiving, shelf counting, and reduced handling damage.
• OE mapping helps reduce picking errors: 3980926 / 21103766 / 3980947.
• Suitable for depot service kits and scheduled mirror replacement programs.
• Packaging-friendly weight control (4.85 kg) helps warehouse handling and outbound shipping planning.

DIY Replacement Guide

■ Symptom-Based Replacement

■ Cracked housing or damaged mirror surface reducing visibility

■ Vibration blur at speed or mirror position drifting after adjustment

■ Loose seating at the arm interface or damaged fastener points

Workshop Steps

1. Support the mirror assembly and protect the door surface before loosening fasteners.
2. Disconnect any electrical connector(s) carefully (if present on your configuration), and check pins for corrosion.
3. Remove the old unit, clean the mounting faces, and compare bracket geometry to the replacement.
4. Install the new mirror, tighten evenly, then verify stable adjustment range and road-test for vibration blur.
5. Record the OE used for future picking: 3980926 / 21103766 / 3980947.

Compliance Statement

This replacement mirror assembly is intended for compatibility-focused service and maintenance use, with emphasis on consistent mounting geometry and stable positioning under commercial vehicle operating conditions.

Fitment should be confirmed by OE reference and mounting configuration before ordering.

OE Reference & Mounting Verification

Compatible with VOLVO FH12 / FM12 / FM10 / NH (EU, 1993–1999) as referenced by 3980926, 21103766, 3980947.