I'm not familiar with 2021s but the engine should not make any difference.
Just came from my local ram parts counter. He said the ranch hand guard works on the eco diesel and will be installing on my truck next week. He was told that the grill guard manifactures were concerned with decreased cooling. This dealer has been installing on the gen 3 for over a year with no issues.I’m looking for a grill guard for a 2021 ram 1500 Eco Diesel. The info I’ve seen excludes the Eco Diesel. Any help.