BMW 3 Series E46 Oil Pressure Switch | BSG 15-840-045

BMW E46 Oil Pressure Switch (Sensor)

BSG 15-840-045 | Compatible with M43 / M52 / M54 | Price/Performance Product

This oil pressure switch from the budget-friendly global spare part market brand BSG is manufactured for the most popular 4 and 6-cylinder (M43, M52, M54) engines of the E46 Chassis, which is the heart of the BMW 3 Series. This critical part, which stands guard on top of the oil filter housing, continuously checks whether the engine oil pressure is at a safe level. Over time, your old switch may fail due to excessive heat and the acidic nature of the engine oil, causing the red oil light on the dashboard to flash at idle, creating moments of panic, or leaking oil into its socket, risking your electrical system. Read your engine's health accurately with BSG's tested price/performance quality and avoid false alarms.

• False Oil Light Solution: Even if your oil pump is functioning properly, it will definitely extinguish that annoying red oil light at idle due to switch failure (if there is no mechanical pressure loss).
• Wiring Protection (Sealing): It eliminates the tendency of burst switches to push oil into the electrical socket, preventing your wiring harness and engine control unit (ECU) from being shorted out due to oil contamination.
• Economic First Response: Before incurring massive costs like engine overhaul or oil pump replacement, this is a great price/performance (P/P) product to test whether the issue is caused by just a small sensor.
• Wide Engine Compatibility: It provides full compatibility with both the legendary 4-cylinder M43 and the inline 6-cylinder kings M52 and M54 engines of the E46 at factory values (0.2 - 0.5 bar range).

Technical Details

Frequently Asked Questions (FAQ)