URO URO-017979 EVAP Leak Detection Pump for BMW

The URO URO-017979 Fuel Vapor Detection Pump is a critical component of the evaporative emissions control system (EVAP) designed for BMW vehicles. This pump monitors the fuel containment system for vapor leaks to the atmosphere, ensuring compliance with federal emissions regulations while maintaining optimal engine performance.

Key Features:

• Diagnostic Module for Tank Leakage (DMTL) functionality detects fuel vapor leaks in the EVAP system
• Replaces BMW OEM part number 16137448091 for direct fitment
• Located near the fuel tank and active charcoal filter for efficient vapor system monitoring
• Prevents check engine light activation caused by EVAP system leaks
• Features 4-pin electrical connector for seamless integration
• Constructed from durable industrial-grade plastic materials for long service life

How It Works:

The leak detection pump works as part of the EVAP system to test the fuel containment system for vapor leaks. It uses a series of internal components including a vent valve, main diaphragm, vacuum solenoid, and sensor to pressurize the system and detect leaks. When a leak is detected, the pump signals the engine control unit (ECU) to illuminate the check engine light and store diagnostic trouble codes such as P0442, P0455, P0456, P1447, or P2402.

Installation Notes:

Typically mounted behind the rear wheel near the EVAP canister, this pump requires disconnection of vacuum lines and electrical connector for replacement. A failed leak detection pump often triggers emissions-related fault codes and must be replaced to maintain proper EVAP system function and pass emissions inspections.

URO Parts manufactures this component to meet or exceed OEM specifications, providing reliable performance and accurate vapor leak detection for BMW fuel systems.