Front Seat Belt Assembly for Model 3 (1105821-C1-I / 1105822-C1-I)

Description

Replace the Faulty Seat Belt, Restore Reliable Protection

Engineered as an OEM-grade direct replacement for Tesla Model 3. Designed to fit original mounting points seamlessly, it integrates with factory safety systems to instantly retract slack during emergency braking or impact—restoring original occupant protection.

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Product Specifications

SELECT SIDE

Precision OEM FitVEHICLE COMPATIBILITY Tesla Model 3(2017-2023)OE PART NUMBERS Left: 1105821-C1-I
Right: 1105822-C1-I

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*Please verify the part number on the original seat belt retractor label and confirm compatibility by VIN before ordering. LH/RH are determined while seated in the vehicle and facing forward; driver/passenger position varies by market.

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Key Features

OEM-Grade Safety Standard

Direct-fit replacement engineered to meet exact manufacturer structural and safety standards. Restores original crash protection performance and ensures full reliability for driver and front passenger safety.

Precision Integrated Pre-Tensioner System

Features an advanced retractor mechanism that instantly locks and tightens upon sudden deceleration or impact, minimizing occupant movement and maximizing cabin safety.

High-Tensile Tear-Resistant Webbing

Constructed from premium, heavy-duty woven polyester thread designed to withstand extreme pulling force, friction, and daily UV exposure without fraying or fading.

Flawless Plug-and-Play Electrical Connector

Includes factory-matched harness connectors for the seat belt warning sensor and restraint system, eliminating error codes and ensuring seamless communication with your Tesla’s onboard computer.

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Frequently Asked Questions (FAQ)

How do I know if I need to replace my front seat belt assembly?

DetailsYou should replace the assembly if the seat belt has locked up following a collision, if the webbing is frayed, cut, or damaged, if it fails to retract automatically, or if your Tesla dashboard displays a restraint system warning light.

Are part numbers 1105821-C1-I and 1105822-C1-I interchangeable?

DetailsNo. Part number 1105821-C1-I is specifically engineered for the Left / Driver Side, while 1105822-C1-I is designed for the Right / Passenger Side. Please ensure you select the correct side for your vehicle.

Will installing this seat belt trigger an airbag or restraint system error code?

DetailsNo, provided the low-voltage battery is properly disconnected during installation and the factory-style harness is securely plugged in. Once installed correctly, the unit communicates seamlessly with Tesla’s safety restraint system.

Can I install this seat belt assembly myself, or do I need professional service?

DetailsThis unit features a direct plug-and-play design and can be installed at home. If you are unfamiliar with interior trim panel removal or power-down procedures, installation by a qualified technician is recommended.