HW4.0 Side Repeater Camera Assembly with Turn Signal 1820734-00-D / 1820735-00-D for Tesla Model 3 / Model Y

HW4 Side Camera and Turn-Signal Replacement Assembly

Replace a matching failed side repeater with a combined camera, signal light and outer housing. Choose one left or right assembly for the vehicle’s actual HW4 camera configuration. This is a new aftermarket replacement; the OE references identify applications and do not establish Tesla manufacture.

HW4 Replacement
1 Selected Assembly
Left or Right
Aftermarket Part

Key Features

Combined replacement assembly

The camera, turn-signal light and outer housing are supplied together.
One selected side

Left and right options each contain one assembly, not a pair.
Vehicle-side reference

Left and right are viewed from inside the car facing forward, regardless of steering side.
OE application references

Left is 1820734-00-D and right is 1820735-00-D; these references do not establish Tesla manufacture.
Existing HW4 hardware

The unit replaces matching HW4 side-camera hardware and does not convert an older camera system.

Highlights

Camera, Signal and Housing - TESVX Side Repeater Camera — Camera, Signal and Housing

One selected assembly combines the side camera, turn-signal light and outer housing. Wiring harnesses and installation tools are supplied separately.

Choose the Vehicle Side - TESVX Side Repeater Camera — Choose the Vehicle Side

Left and right are viewed from inside the car facing forward. The two-side image illustrates the choices; each ordered selection contains one assembly.

Match the Existing Shape - TESVX Side Repeater Camera — Same Shape as Original

Replaces the original HW4 side-camera assembly with the same housing, camera and turn-signal layout.

Compatibility

Model	Years / Version	Notes
Tesla Model 3 / Highland	Oct 2023+ / 2024+ options	HW4 only; Shanghai or Fremont.
Tesla Model Y	2024+ option	Shanghai; matching HW4 label and connector required.
Tesla Model Y	2023+ option	Austin/Fremont; matching HW4 label and connector required.
Tesla Model Y	May–Dec 2024 option	Berlin; matching HW4 label and connector required.
Tesla Model Y Juniper	2025+ option	Shanghai, Austin/Fremont or Berlin choices.

Fits HW4 (4.0 camera) vehicles only. Model 3 applications are Shanghai or Fremont builds, and this assembly does not upgrade a legacy system to HW4.

Specifications

Product Type	Side repeater camera and turn-signal assembly (new aftermarket replacement)
Compatible Models	Model 3 (2023.10+), Model 3 Highland (2024+), Model Y (2023+), Model Y (2024.5–2024.12), Model Y Juniper (2025+), all with 4.0 Version Camera
Position / Location	Left or right front fender (viewed from inside the car, facing forward)
Quantity	1 piece per selection (Left Side or Right Side)
OEM Part Number	OE application references only: LH 1820734-00-D; RH 1820735-00-D. New aftermarket part.
Shipping Weight	338 g (0.75 lb)

What's in the Box

1×Side repeater camera assembly (camera, turn-signal light and molded housing), left or right as selected

Installation

Difficulty: Advanced
Time: Depends on diagnosis, vehicle software and calibration
Tools: Vehicle-specific service and diagnostic tools, not included

Fit the assembly.
Complete the applicable camera update and calibration process, including required self-calibration, before relying on affected assistance features.

Good to Know

Caution

The combined Austin/Fremont option does not mean Model 3 was manufactured in Austin; Model 3 applications use the actual Shanghai/Fremont build.
A black feed can also arise from wiring or software; replacing an assembly is not a guaranteed diagnosis.

Care

Keep the camera lens clean.
Monitor the camera feed and signal after repair; investigate warnings rather than treating a replacement as an upgrade.

FAQ

Is this a pair or a decorative cover?

Each left or right selection supplies one complete camera, turn-signal and housing assembly. It is not a cover, and a pair requires ordering one of each side.

Is the part manufactured by Tesla?

The item is a new aftermarket replacement. The OE reference numbers identify applications and do not indicate that Tesla manufactured the supplied assembly.

Is left always the driver’s side?

Left is the vehicle’s left side when facing forward from inside. It is the driver’s side on LHD vehicles and the passenger’s side on RHD vehicles.

Will this add HW4 or unlock FSD?

No. It replaces compatible existing HW4 side-camera hardware. It does not convert a legacy camera system or unlock software features.

What is required after replacement?

The camera update and calibration process for the vehicle and software, including self-calibration.