NGK 4705 Diesel Glow Plug

NGK Diesel Glow Plug 4705 Overview

The NGK diesel glow plug 4705 is an OE-equivalent replacement built for diesel cold-start performance and stable preheating. It is a fitment-based choice for Sprinter and E320 diesel applications that require the correct electrical and thread specifications.

Key Features

• OE-equivalent design for direct replacement use.
• 12-volt system with 11.50 voltage rating.
• Metal construction with a flat seat and pin terminal.
• M4 terminal thread size, 10 mm hex size, and 0.391 thread diameter.
• NGK Glow Plug line backed by NGK’s OE manufacturing background.

Detailed Description

NGK part number 4705, also identified as Y-745U, is a diesel glow plug engineered to match original equipment standards for diesel engine starting and warm-up performance. The flat-seat design, pin terminal, and listed dimensions support proper electrical connection and installation fitment where the application calls for this configuration. This part cross-references DENSO Auto Parts 4705 for the same application. For buyers searching for a Dodge Sprinter 2500 glow plug, Dodge Sprinter 3500 glow plug, Freightliner Sprinter 2500 glow plug, Freightliner Sprinter 3500 glow plug, or Mercedes-Benz E320 glow plug, NGK 4705 provides a fitment-specific replacement option.

Common Issues It May Address

• Hard starting in cold diesel conditions.
• Extended cranking before the engine fires.
• Uneven preheating from a worn glow plug.
• Faults caused by an incorrect terminal or seat style.
• Replacement needs for OE-equivalent diesel ignition hardware.

Installation Notes and Tips

Verify the vehicle’s glow plug specification, terminal style, seat type, and thread dimensions before installation. Confirm fitment for 2002-2006 Freightliner Sprinter 2500 and Sprinter 3500, 2003-2006 Dodge Sprinter 2500 and Sprinter 3500, and 2005-2006 Mercedes-Benz E320. Use the correct torque procedure for the cylinder head and inspect the electrical connector condition during service.

Quality Assurance

NGK is a long-established OE supplier with extensive North American and global manufacturing support. Part number 4705 is produced to original equipment standards for durability and operational performance.