4-Pin 12V 40A SPST Automotive Multi-Purpose Relay (2-Pack) - Replacement for 4RA007791-20, 0332019150, 74443Number of Items: 2About this item TECHNICAL PARAMETERS: 12VDC 40A 4-Pin SPST (Single Pole Single Throw) automotive relay. This 645-type relay features high-conductivity copper terminals and silver-alloy contact points for stable current flow. VEHICLE COMPATIBILITY: Precision-engineered as a functional replacement for select [2011-2024] Volkswagen Jetta, Tiguan, Passat, and Golf models. Also compatible with Audi A3, A4, A6, Q5, and Q7 series where the "645" relay is specified in the fuse distribution panel. RELIABLE CIRCUIT SOLUTION: Helps resolve intermittent electrical issues such as clicking sounds during ignition or flickering exterior lights. Designed for high-draw applications, ensuring consistent power delivery to the AC blower motor, secondary air pump, and other critical systems. FAULT CODE REPAIR: Specifically addresses common OBD-II diagnostic trouble codes, including P0230 (Fuel Pump Primary Circuit), P068A, and P0256. Restores electrical communication between the fuel pressure regulator and the engine control unit (ECU). CONVENIENT 2-PIECE SET: Each package includes two relays to allow for an immediate repair plus a spare for emergency roadside use. Features a reinforced composite housing that resists engine bay heat and vibration for long-term service life. Size: 1.06 x 1 x 1.38 inches.