Bosch 0332514120 Fuel Pump Relay (0-332-514-120) - VW & Porsche

Fuel Pump Relay – 0332514120 (0-332-514-120)

The 0332514120 (0-332-514-120) is a specialized electrical relay essential for the operation of the electric fuel pump in L-Jetronic and AFC fuel injection systems. This relay is a safety-critical component; it is designed to activate the fuel pump only when the engine is cranking or running. By monitoring the ignition signal, it ensures that the fuel pump shuts off immediately if the engine stalls, preventing fuel from being pumped in the event of an accident.

Failure of this relay is a common cause of "no-start" conditions in late-model air-cooled Volkswagens. Internal wear or heat-damaged solder joints can cause the relay to fail intermittently or stop sending power to the pump entirely. Replacing it with a genuine Bosch unit ensures the correct internal resistance and timing required to keep your fuel system pressurized and your engine running smoothly.

Detailed Vehicle Compatibility

Porsche 912 E:

• 1976

VW Beetle (Standard):

• 1975, 1976, 1977

VW Super Beetle:

• 1975, 1976, 1977, 1978, 1979

VW Transporter (Bus):

• 1975, 1976, 1977, 1978, 1979

Note: On the 1979 Bus, the California model only has 13 pins.  This relay WILL NOT work

VW Vanagon:

• 1980, 1981, 1982, 1983

Product Highlights & Features

• Safety Shut-Off: Automatically cuts power to the fuel pump if the engine stops rotating, a vital safety feature for fuel-injected vehicles.

• Heavy-Duty Design: Built to handle the high-amperage draw of external fuel pumps without the risk of internal melting or contact sticking.

• Direct OEM Fit: Manufactured by Bosch, the original equipment provider for the VW and Porsche fuel injection systems used during these years.

• Reliable Starting: Restores the "priming" function that builds initial fuel pressure for faster, more consistent cold starts.

Technical Specifications

• Part Number: 0332514120 / 0-332-514-120

• VW/Audi Interchange: 431-906-059

• Type: 11-Pin Electrical Relay

• Voltage: 12V

Installation & Maintenance Tips

• Locating the Relay: On Beetles and Buses, this relay is typically located in the engine compartment on the firewall or near the voltage regulator. On Vanagons, check the relay box above the fuse panel.

• Clean the Contacts: Before plugging in the new relay, inspect the wiring harness connector for corrosion. Clean terminals ensure the relay doesn't overheat due to poor electrical contact.

• Fuel Pump Troubleshooting: If your pump isn't running, you can test the relay by listening for a "click" when the key is turned. If the relay clicks but the pump doesn't move, the issue may be the pump or the wiring between the two.

• Check Your Ground: This relay requires a solid ground connection to function. If the mounting bracket or ground wire is loose, the fuel pump will not activate.

0332514120