NEW Top Quality 1000w Heavy Machined Steel & Nickel Chrome Plated Block Heater. Fits All 1987-2002 5.9 (6BT & 3.9 (4B & 4BT) Cummins Diesel Engines. Made By the OEM Manufacturer for Dodge/Ram We have been installing these special heaters in our engines for years. Many people have asked for them separately, so here they are! This little powerhouse heater can be a hard to find part ..... and worth every penny in a cold climate. This is the most powerful & durable block heater for the B series Dodge / Cummins 3.9 & 5.9 Diesels. Superior performance as compared to the 600w heaters available elsewhere. The longer and more powerful copper heating element and solid heavy cast steel, nickel chrome plated base casting are just some of what sets this heater apart from the cheap imitators. Made for us right here in the good 'ol USA, NOT China!