Avital 7143L Replacement Remote - 1-Way 4-Button Fob for 3300/5103/5303, 1/4-Mile Range

The Avital 7143L is a 1-way, 4-button replacement remote transmitter that restores lock, unlock, trunk release and remote-start control for compatible Avital systems up to a quarter-mile away.

This compact replacement fob is designed for owners of Avital remote-start and security systems who need a direct, reliable match for the factory transmitter. It pairs with Avital models 3300, 5103 and 5303 and gives you the familiar four-button layout—lock, unlock, trunk and remote start—so you can quickly regain full remote functionality without replacing the entire alarm or starter module. The unit operates as a 1-way transmitter with a stated effective range of up to 1/4 mile under ideal conditions.

How does this replacement remote restore my vehicle’s remote functions?

Pairing the Avital 7143L reinstates the original controls for your existing Avital system. Once programmed to your vehicle’s receiver, the remote sends one-way signals to lock and unlock doors, open the trunk and initiate the remote-start sequence, returning the convenience of remote operation.

• Compatible with Avital 3300, 5103 and 5303 receivers
• Four labeled buttons: lock, unlock, trunk, remote start
• 1-way transmission for simple, fast command delivery
• Typical programming steps match factory procedure for Avital systems

What kind of range and reliability can I expect?

The manufacturer specifies an effective range up to 1/4 mile in open environments; actual distance depends on obstacles, antenna placement and local radio interference. For everyday use—parking lots, driveways and short distances around the home—the remote provides reliable response when line-of-sight and interference are minimal.

• Rated up to 1/4 mile in ideal conditions
• Performance varies with buildings, terrain and radio noise
• Replace battery if signal weakens over time
• 1-way design means the remote does not confirm command receipt

Will this remote fit my Avital system and how do I program it?

This transmitter is intended as a like-for-like replacement for Avital systems listed in the product compatibility. Programming typically follows the receiver’s jumper or learning sequence; many installers or dealer service centers can program it if you prefer not to do it yourself.

• Direct replacement for Avital 3300, 5103 and 5303 systems
• Programming uses the vehicle or alarm receiver’s standard learn mode
• Professional installation available from car alarm shops or dealers
• Instructions usually provided by the receiver’s manual or installer

What are the physical features and power requirements?

The 7143L is a compact fob with four tactile buttons arranged for quick access. It runs on a standard internal battery (replaceable) and is sized to fit on a key ring. The housing matches Avital’s style so it integrates seamlessly with existing key setups.

• Compact, key-fob form factor with four button caps
• Replaceable internal battery for long-term use
• Key ring loop for convenient carry
• Durable plastic housing designed for everyday handling

Who is this for: The Avital 7143L is aimed at vehicle owners already equipped with Avital 3300, 5103 or 5303 remote-start/security systems who need an original-style replacement fob. It’s a practical choice for drivers wanting to restore remote start, door lock/unlock and trunk release without replacing the alarm receiver. Choose this remote if you want a direct, easy-to-program transmitter that matches factory functions and keeps your current system intact.