Standard Ignition RY-292 Diesel Glow Plug Relay

Diesel Glow Plug Relay for Mercedes-Benz 300SD

Standard Ignition RY-292 is a 12-volt diesel glow plug relay built for controlled glow plug operation in diesel starting systems. It features a rectangular connector shape, 10 male terminals with pin and bullet terminal types, and a mounting bracket included for direct replacement service.

Compatible With 1983-1985 Mercedes-Benz 300SD applications, this relay is specified for OE-style service where the original glow plug relay has failed or is no longer cycling correctly. The Standard Ignition RY-292 is rated at 140 amps and is not a continuous-duty relay.

Key Features

• Diesel glow plug relay for 12-volt systems
• 140-amp amperage rating for glow plug circuit control
• Rectangular connector shape with 10 male terminals
• Pin and bullet terminal types for application-specific connection
• Mounting bracket included for secure installation
• Not continuous duty
• Direct replacement part number: RY-292

Detailed Description

Standard Ignition RY-292 is an emission control relay used in diesel glow plug circuits to manage current flow during cold starts. On Mercedes-Benz 300SD models, the relay helps coordinate glow plug activation so the engine can build the heat needed for starting. This part cross-references Four Seasons 20092 for the same application. It also cross-references OE reference 0015459832 for the same application.

For buyers searching for a Mercedes-Benz 300SD glow plug relay, diesel relay replacement, or Standard Ignition RY-292, this unit matches the listed 1983, 1984, and 1985 vehicle applications and uses the specified 12-volt, 140-amp configuration.

What It Helps Solve

• Hard starting in cold weather on diesel engines
• Glow plugs not receiving proper relay control
• Intermittent or no glow plug activation
• Electrical relay failure in the glow plug circuit
• Replacement needs for an OE-style Mercedes-Benz 300SD relay

Installation Notes and Tips

Verify connector shape, terminal count, and terminal style before installation. Confirm the vehicle uses a 12-volt glow plug relay circuit and compare the existing relay to the listed rectangular, 10-terminal configuration. Inspect the mounting location and wiring condition before connecting the replacement part. Because this relay is not continuous duty, it should be used in the intended glow plug control application only.

Quality Assurance

Standard Ignition supplies electrical replacement parts for service applications, and this relay is built to match the listed electrical and connector specifications for the confirmed Mercedes-Benz 300SD fitment.