431-951-253H VW 12V 40A 4-Prong Horn & Multi-Purpose Relay

Multi-Purpose 12V 40A Relay – 431-951-253H

The 431-951-253H is a vital spare part for any Volkswagen electrical system. Relays act as remote-controlled switches, allowing a low-current trigger (like a horn button) to control a high-current device without damaging the interior wiring or switches. If your horn has stopped working but the fuse is intact, a failed relay is often the primary cause.

Because of its 40A rating, this relay provides a higher safety margin than standard 20A or 30A versions, ensuring long-term reliability even under heavy usage.

Detailed Vehicle Compatibility

VW Beetle (Standard):

• 1971, 1972, 1973, 1974, 1975, 1976, 1977

VW Super Beetle:

• 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979

VW Bus (Type 2):

• 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979

VW Vanagon:

• 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991

VW Type 3:

• 1968, 1969, 1970, 1971, 1972, 1973

VW Rabbit / Golf:

• 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992

Product Highlights & Features

• 40A Heavy Duty Rating: Built to withstand constant use and high-amperage spikes.

• Universal Interchange: Compatible with applications requiring part number 141-951-253B.

• Sealed Housing: Protects the internal copper coils and contact points from engine bay moisture and dust.

Technical Specifications

• Part Number: 431-951-253H

• Voltage: 12V

• Amperage: 40A

• Pins: 4-Prong

• Housing: High-impact plastic

Installation & Maintenance Tips

• The "Click" Test: You can verify a relay's function by having someone activate the horn while you touch the relay housing. You should feel a mechanical "click" as the internal contacts close.

• Clean the Sockets: Before installation, ensure the relay panel sockets are free of corrosion or signs of melting. Heat damage in the socket can lead to premature relay failure.

• Carry a Spare: Since this 4-prong relay is used for multiple systems (horn, fans, and sometimes fuel pumps), keeping a spare in your glovebox is a smart way to prevent being stranded.

431951253H

141951253B