The 2018 Ram 2500 comes equipped with a block heater, but the cord is often not included. This guide will help you locate, install, and use your block heater cord effectively.

Locating the Block Heater

The block heater on a 2018 Ram 2500 with a 6.7L Cummins diesel engine is located near the oil filter. To find it:

  • Look for a small black rubber cap just behind the oil filter
  • This cap covers the block heater element
  • No need to remove any components to access it if you have slim arms

Installing the Block Heater Cord

To install the cord:

1. Remove the black rubber cap from the block heater element

2. Plug the two-pronged connector into the exposed element

3. Secure the threaded ring to ensure a tight connection

4. Route the cord along the frame, using zip ties to secure it

5. Bring the cord out through the front grille or near the license plate

Tip: You can purchase an OEM cord or a less expensive aftermarket option. Both work well, but the OEM version includes wire loom and mounting clips.

Routing the Cord

Follow this path to route your block heater cord:

  • Start at the block heater element behind the oil filter
  • Run the cord down along the AC lines
  • Secure it to existing wire looms with zip ties
  • Route along the frame towards the front of the vehicle
  • Bring the cord out near the front grille or license plate area

Caution: Ensure the cord doesn't interfere with moving parts or touch hot surfaces.

Using the Block Heater

To use your block heater effectively:

  • Plug in the cord when temperatures drop below 20°F (-6°C)
  • Use a heavy-duty, outdoor-rated extension cord
  • Connect to a 110-volt outlet
  • Plug in for 3-4 hours before starting the engine
  • Always unplug before driving away

Note: Using a timer can help automate the process and save electricity.

Benefits of Using a Block Heater

Using your block heater provides several advantages:

  • Easier engine starts in cold weather
  • Reduced engine wear during cold starts
  • Improved fuel economy in the first few minutes of operation
  • Faster cabin heat-up time
  • Decreased emissions during initial startup

By installing and using your block heater cord correctly, you'll ensure your 2018 Ram 2500 starts reliably and runs efficiently in cold weather conditions.

FAQs About 2018 Ram 2500 Block Heater Cords

    • Do all 2018 Ram 2500s come with a block heater?
      Yes, but the cord is often not included and must be purchased separately.
    • Can I install the block heater cord myself?
      Yes, it's a relatively simple DIY project that most owners can handle.
    • How long should I plug in my block heater?
      Generally, 3-4 hours before starting the engine is sufficient.
    • Is it safe to leave my block heater plugged in overnight?
      Yes, but using a timer can save electricity and prevent overheating.