Diesel Fuel Cap

[Sabu]

Isada 5 30FW: Anyone else notice that their fuel cap does not thread to the filler neck properly? I looked closely, and mine clearly is the wrong cap for the filler neck. It seems like it’s threading on, but it never actually seals. Almost like it’s cross-threaded.

Ron

[vlamgat]

Originally Posted by Sabu

Isada 5 30FW: Anyone else notice that their fuel cap does not thread to the filler neck properly? I looked closely, and mine clearly is the wrong cap for the filler neck. It seems like it’s threading on, but it never actually seals. Almost like it’s cross-threaded.

Ron

No issues with mine. Tried to find a decent locking one but the only ones sold are easy to remove with a screw driver.

[Bill Davis]

Originally Posted by Sabu

Isada 5 30FW: Anyone else notice that their fuel cap does not thread to the filler neck properly? I looked closely, and mine clearly is the wrong cap for the filler neck. It seems like it’s threading on, but it never actually seals. Almost like it’s cross-threaded.

Ron

I would be surprised if it’s not sealing. If it’s not sealed it should turn on the check engine light and set an evaporative emissions code.

[vlamgat]

Originally Posted by Bill Davis

I would be surprised if it’s not sealing. If it’s not sealed it should turn on the check engine light and set an evaporative emissions code.

No such codes for diesel engines. You can run without a cap as long as you want.

[Jim34RL]

Originally Posted by vlamgat

No issues with mine. Tried to find a decent locking one but the only ones sold are easy to remove with a screw driver.

Did you check out "Geno's Garage. Com" they are a dedicated Ram/Cummins site for unique parts!

Geno's offer both DEF and Diesel locking caps for the current Ram trucks which include the 3500,4500 and 5500 cab and chassis models.

[Sabu]

I looked at Gino’s, and, sure enough, the one they show has a completely different threading than mine. It’ their part no. MOP-52013994AB. Thanks Jim34RL.
Ron

[vlamgat]

Originally Posted by Jim34RL

Did you check out "Geno's Garage. Com" they are a dedicated Ram/Cummins site for unique parts!

Geno's offer both DEF and Diesel locking caps for the current Ram trucks which include the 3500,4500 and 5500 cab and chassis models.

Nice and secure too but no tether and no magnet. So nowhere to put it except on the ground when refueling. Especially when uplifting DEF which requires putting the rig quite far from the diesel filler so that the DEF wand can reach the barn door up front.

[Bill Davis]

Originally Posted by vlamgat

No such codes for diesel engines. You can run without a cap as long as you want.

Oops, I forgot about him having a diesel.