Mercedes Late 616 617 Diesel High Performance Glow Plug Relay

Looking for better staring performance? This new pre-glow relay will work on all later 123 Chassis 240D (1981-1983 ONLY), 123 Chassis 300D 300TD 300CD Turbo models(1981 to 1985 ONLY),  and 126 chassis 300SD Turbo(1981 to 1985) that utilize pencil glow plugs. Cover not included. (Does not work with the 116 chassis 300SD or ANY 1980 models).

When installing this relay upgrade (longer glow times )we recommend that you also install new glow plugs and ream the carbon out of the glow plug holes. New plugs can better handle the higher heat generated by this relay's glow times.  And don't forget - when replacing pencil glow  plugs always ream out the glow plug holes to extend glow plug life. CLICK HERE to view our full line of glow plug kits, and kits with reamer.

If you are running SVO this relay with also help with smoother start ups on vegetable oil.

Please Note: NO Returns on electrical parts that have been installed.