Direction Indicator 9738200221 MERCEDES BENZ Indicator Original

1.Quick Notice

9738200221 direction indicator (side repeater or front wing indicator) for Mercedes-Benz trucks and commercial vehicles. Direct OE replacement lamp unit. Clear lens with orange bulb appearance. No bulb or wiring harness included. Verify connector type and mounting hole spacing before ordering.

2.Description

The 9738200221 is an original equipment direction indicator lamp for Mercedes‑Benz Actros, Axor, Atego and Unimog model series. This indicator is typically mounted on the front wing (fender) or as a side repeater on the cab exterior. It provides visible turn signal indication to other road users from the side of the vehicle.

The housing is manufactured from impact‑resistant polycarbonate with a black textured finish. The lens is transparent polycarbonate with UV stabilizers to prevent yellowing or hazing over time. Inside, the reflector geometry is optimized for 24V truck electrical systems. The lamp accepts a single 24V amber bulb (typically P21W or WY21W), which is not included.

The mounting system uses either a rubber grommet push‑fit or two small screws depending on the specific chassis application. The electrical connection is a two‑pin female socket that mates with the vehicle harness. Some variants include an integrated resistor for LED compatibility, but the OE 9738200221 is designed for incandescent bulbs.

This replacement indicator is suitable when the original lens is cracked, the housing is faded or broken, or the internal reflector has corroded causing weak light output. Always replace in pairs if the opposite side shows similar age‑related deterioration.

3.Parameter Table

4.Custom Content

Before installation, confirm the original indicator mounting style. Remove the old unit by gently prying with a trim tool or unscrewing visible fasteners. Clean the mounting surface. Transfer the rubber gasket or sealing ring from the old lamp if present. Insert the new bulb into the holder before mounting the indicator. Apply a thin film of dielectric grease to the electrical connector pins to prevent corrosion. Push the indicator into place until it clicks or tighten retaining screws to 1‑2 Nm. Test the turn signal function with the hazard lights before road use.

5.FAQ (Q&A Format)

Q1: Which Mercedes-Benz vehicles use the 9738200221 indicator?

A1: This indicator fits Actros (MP2, MP3), Axor, Atego and Unimog trucks. Check your original part number or measure the mounting hole spacing to confirm fitment.

Q2: Does this lamp include the bulb?

A2: No. The bulb is sold separately. You need a 24V amber single‑filament bulb (P21W or WY21W).

Q3: Is this indicator compatible with LED bulbs?

A3: The housing accepts an LED replacement bulb, but you may need a load resistor to prevent hyper‑flash. The OE unit is designed for incandescent bulbs.

Q4: How do I remove the old indicator without breaking the paint?

A4: Use a plastic trim removal tool. Insert it gently between the indicator housing and the fender. Avoid metal tools that scratch the paint.

Q5: The new indicator fits loosely. What is wrong?

A5: The rubber grommet may be missing or damaged. Transfer the old grommet or order a replacement. Some installations use a foam gasket behind the housing.