BMW Electrical Sensors, Switches, & Relays for BMW 5 Series E34 (1987-1995)

Clear BMW chassis

Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.

Sub-Categories

Sort By:

Hitachi Voltage Regulator - BMW E31 E32 E34 E36

For vehicles with compact alternator

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:48850064

Part#: 12311747920

Ships in 6 Business Days

$ 37.99 USD

Add to Wish List

Qty

$ 37.99 USD

Add to Wish List

This voltage regulator is a crucial component that controls the alternator's output, preventing overcharging by adjusting the current to maintain a safe range of vehicle voltage, thereby protecting the battery and electrical system. Symptoms of failure include dim lights, battery warnings, or a dead battery, often requiring replacement, which can be internal or external to the alternator.

Show More Show Less

Battery Tender Plus Advanced Battery Charging System

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:49892371

Part#: BTT0210128

Back Ordered

$ 69.99 USD

Add to Wish List

Qty

$ 69.99 USD

Add to Wish List

Wire Pinning Kit - MLK 1.2 Female Jack

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:55281746

Part#: 125275WRKT

Ships in 9 Business Days

$ 37.40 USD

Add to Wish List

Qty

$ 37.40 USD

Add to Wish List

This Genuine BMW wiring repair kit is the ideal solution to refresh worn-out terminal connections in your Ultimate Driving Machine.

Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:54388428

Part#: H240

Ships on Jul 21, 2026

Sale - Save 17% $ 21.99

This product was last offered at the strikethrough price on
06-23-2026

$ 18.21 USD

Add to Wish List

Qty

Sale - Save 17%

$ 21.99

This product was last offered at the strikethrough price on
06-23-2026

$ 18.21 USD

Add to Wish List

Hitachi Voltage Regulator - BMW E36 Z3 E34

For 100A Valeo alternators

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:48850070

Part#: 12321739435

Back Ordered

$ 60.99 USD

Add to Wish List

Qty

$ 60.99 USD

Add to Wish List

Alternator voltage regulators are a crucial component that controls the alternator's output, preventing overcharging by adjusting the current to keep vehicle voltage within a safe range, protecting the battery and electrical system. Symptoms of failure include dim lights, battery warnings, or a dead battery, often requiring replacement, which can be internal or external to the alternator

Project Cars

SELECT YOUR BMW

BMW Electrical Sensors, Switches, & Relays for BMW 5 Series E34 (1987-1995)

Sub-Categories

Hitachi Voltage Regulator - BMW E31 E32 E34 E36

Battery Tender Plus Advanced Battery Charging System

Wire Pinning Kit - MLK 1.2 Female Jack

Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...

Hitachi Voltage Regulator - BMW E36 Z3 E34

Select Vehicle

Purpose

Category

Brand

Price

Special Offers

Shipping

Narrow Results