Standard Ignition EFL-21 Engine Water Pump Relay

Engine Water Pump Relay for Nissan and Mercury

Standard Ignition EFL-21 is an engine water pump relay application with a 3-terminal blade design, female connector gender, and male terminals. It is built for direct replacement use in select Nissan Sentra, Nissan Quest, and Mercury Villager vehicles, including electronic flasher applications where listed.

Key Features

• Engine water pump relay application
• Female connector gender with male blade terminals
• 3-terminal configuration
• Direct-fit replacement for listed Nissan and Mercury applications
• Standard Ignition EFL-21 part number for catalog matching

Detailed Description

The Standard Ignition EFL-21 relay is specified with a female connector, male blade terminals, and three terminals for the correct electrical interface in supported vehicles. This relay is listed for 2000-2006 Nissan Sentra, 2000-2002 Nissan Quest, 1999-2002 Mercury Villager with electronic flasher notes, and 1993-1998 Mercury Villager. For buyers searching for a 2000-2006 Nissan Sentra relay, a 2000-2002 Nissan Quest relay, or a Mercury Villager electronic flasher replacement, EFL-21 provides a cataloged match by application.

This part cross-references 257314Z000 and FC653 for the same application.

What It Helps Address

• Relay failure causing intermittent electrical operation
• No-response condition in the listed relay circuit
• Incorrect relay connector or terminal style during replacement
• Electrical mismatch when servicing Nissan Sentra, Nissan Quest, or Mercury Villager applications

Installation Notes and Tips

Verify the relay cavity, terminal count, connector gender, and blade-terminal layout before installation. Match the vehicle year, make, model, and any listed notes, especially the electronic flasher note for 1999-2002 Mercury Villager. Confirm the part number EFL-21 against the original relay or service catalog before replacement.

Quality Assurance

Standard Ignition parts are cataloged for application-specific replacement use, and EFL-21 is listed with defined connector and terminal specifications to support accurate fitment selection.