Bosch Reflector 1305314932 H4 Headlight Right Mercedes W123 S123 Round NOS
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Bosch reflector 1 305 314 932 (H4) for the round main headlights of the Mercedes W123 and S123, right side of the vehicle.
Professionally refurbished · Fits W123/S123 round headlights (up to 09/1982) · 5-year warranty
✓ Tested and functional
5-year warranty on this refurbished part
Should there be a problem: send in the part – we will repair or replace it. In addition, a 60-day return policy and free shipping within Germany apply.
Function and location
The reflector is the light-shaping heart of the headlight: the H4 dual-filament bulb sits in the wire-spring socket at the apex of the chromed paraboloid, which focuses the low and high beam. Dulled or hazy reflectors are the most common cause of weak light on classics – the lens can look flawless while the reflector cuts the light output in half. Only the insert is replaced; the housing and lens are retained.
The reflector sits in the round main headlight at the front right, behind the lens; alignment is done via the adjuster pins and adjusting screws.
Used part or refurbished part?
| Standard used part | This refurbished part |
|---|---|
| Age unknown, fitted untested | Professionally refurbished, tested and fully functional |
How can you tell a reflector is defective?
- Low and high beam are noticeably weaker even though the lens looks flawless.
- The chromed reflector base appears dulled or hazy rather than mirror-like.
- The overall light output appears cut in half compared with an intact reflector.
Compatible vehicles
W123 sedan and S123 T-model (round headlights, up to 09/1982):
- W123 sedan
- S123 T-model
The Bosch part number of this reflector insert is 1 305 314 932, designed for H4 bulbs and the right side of the round main headlights.
⚠ Important: compare the part number before buying
The side assignment is decisive: this version is intended for the right side (driver's side on left-hand-drive cars). Compare your old part with the number 1 305 314 932 – the corresponding left side carries the number 1 305 314 931.
The reflector is supplied exclusively as an insert, without a lens and without a bulb.
Does not fit:
- 280 / 280 E with wide-band headlights from the factory
- Coupe C123
- Vehicles with wide-band/rectangular headlights (series from 09/1982)
- Vehicles with headlight beam-height adjustment
- Hella headlights
Does this part fit your car? Send us the VIN (chassis number) and model year – we'll check it for free: 0179 8991069 (Mon–Fri 8 am–6 pm) or via our contact form.
FAQ
What's included in the scope of delivery?
Only the reflector insert is supplied, without a lens and without a bulb. The housing and lens of your vehicle are retained.
Does this reflector also fit wide-band headlights?
No. This round version (1 305 314 932) is intended exclusively for vehicles with round headlights up to model year 09/1982. It does not fit the 280/280 E and Coupe C123 with wide-band or rectangular headlights, or vehicles with beam-height adjustment.
Does the beam height need to be readjusted after installation?
Yes, alignment is done via the existing adjuster pins and adjusting screws of the headlight.
Related categories: W123
KFZTeile-Thot specialises in spare parts for Mercedes classic cars. Free shipping within Germany, 60-day return policy.
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