Genuine BMW Bosch Green Multi-Purpose Relay – 61311373156

Original used green BMW/Bosch electrical relay for various switching functions in selected classic BMW models.

This relay is used to switch an electrical consumer through a separate control circuit. Depending on the vehicle, production date and relay position, this type of relay may be used for the fuel pump, auxiliary cooling fan, air-conditioning system, lighting, horn or another main-current circuit.

The relay has the standard terminal designations 30, 85, 86 and 87 and functions as a normally open make-contact relay.

The corresponding BMW catalogue number is 61311373156. The short BMW marking is 1 373 156.3, and the associated Bosch reference is 0 332 204 401.

BMW used several visually similar relays with different terminal arrangements. Always compare the complete switching diagram and pin positions before installation.

Product details

• Product: Multi-purpose electrical relay
• Alternative description: Main-current relay
• German description: Arbeitsstromrelais
• Manufacturer: Bosch for BMW
• BMW part number: 61311373156
• Formatted BMW number: 61 31 1 373 156
• Short BMW reference: 1373156
• Associated Bosch number: 0 332 204 401
• Operating voltage: 12V
• Switching capacity: Approximately 20/30A, depending on production version
• Relay type: Normally open make-contact relay
• Terminal designations: 30, 85, 86 and 87
• Connections: Four blade terminals
• Housing colour: Green
• Installation: Plug-in
• Position: Depends on vehicle and electrical application
• Condition: Used
• Quantity: One

Vehicle compatibility

This relay type was used in several electrical positions on selected classic BMW models, including:

BMW 02 Series / E10

• BMW 1502
• BMW 1600-2
• BMW 1602
• BMW 1802
• BMW 2002
• Selected additional 02 Series versions

BMW E3

• BMW 2500
• BMW 2800
• BMW 3.0 S
• BMW 3.0 Si
• BMW 3.3 L
• BMW 3.3 Li
• Selected additional E3 versions

BMW E9

• BMW 2.5 CS
• BMW 2800 CS
• BMW 3.0 CS
• BMW 3.0 CSi
• BMW 3.0 CSL
• Selected additional E9 versions

BMW E12

• Selected BMW 518, 520, 520i, 525, 528, 528i and 530i versions
• Application depends on production date and electrical equipment

BMW E21

• Selected BMW 315, 316, 318, 318i, 320, 320i and 323i versions
• Application depends on production date and electrical equipment

BMW E23

• Selected BMW 728, 728i, 730, 732i, 733i, 735i and 745i versions
• Application depends on production date and electrical equipment

BMW E24

• Selected BMW 630 CS, 630 CSi, 633 CSi, 635 CSi and M635 CSi versions
• Application depends on production date and electrical equipment

BMW E28

• Selected BMW 518, 518i, 520i, 524d, 524td, 525e, 525i, 528i, 533i, 535i, M535i and M5 versions
• Frequently found in the fuse and relay box

BMW E30

• Selected BMW 315, 316, 316i, 318i, 318is, 320i, 323i, 324d, 324td, 325e, 325i and M3 versions
• Frequently found in the fuse and relay box

This is a multi-purpose relay and is not assigned to one single function or BMW model. The exact application depends on the wiring configuration, relay position, vehicle specification and production date.

BMW used relays with similar colours and external dimensions but different internal circuits and pin arrangements. Never select a replacement based solely on housing colour.

Always compare the BMW or Bosch reference, switching diagram, terminal numbers and physical pin positions with the original relay before ordering.

BMW and Bosch numbers

• 61311373156 – BMW main-current relay
• 61 31 1 373 156 – Formatted BMW catalogue number
• 1 373 156.3 – Short marking found on this relay type
• 1373156 – Short BMW reference number
• 0 332 204 401 – Associated Bosch relay number

The photographed side does not show a legible manufacturer or part number. Identification is based on the green housing, four-terminal configuration and matching internal switching diagram.

Some replacement catalogues list other relay numbers as electrically comparable. However, the physical locations of terminals 30, 85, 86 and 87 can differ between relay versions. The pin arrangement must therefore always be checked before installation.

Condition

This is an original used relay with visible age- and use-related wear, including:

• Dirt and storage marks
• Surface discolouration
• Fading of the green plastic housing
• Light scratches and cosmetic wear
• Oxidation and discolouration on the electrical terminals
• General wear consistent with an original classic BMW electrical component

No obvious major damage to the plastic housing is visible in the photographs.

The relay has not been electrically or function-tested. Its switching operation and contact resistance must be checked before installation.

Included

• One green BMW/Bosch-type multi-purpose relay
• Supplied exactly as shown in the photographs

No relay socket, wiring, fuse-box components, mounting hardware or other electrical parts are included.

Installation recommendation

Before installation:

• Confirm the original BMW or Bosch relay number
• Compare the switching diagram carefully
• Check the position of terminals 30, 85, 86 and 87
• Clean the blade terminals if required
• Inspect the relay socket for corrosion or heat damage
• Test the relay coil and switched contacts with a multimeter
• Confirm the required amperage for the intended circuit

Do not install the relay solely based on its green housing colour. Incorrect terminal positioning can cause electrical malfunction, a short circuit or damage to the vehicle wiring.

Installation should preferably be carried out by someone familiar with classic BMW electrical systems.

Location: 201