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Old 10-09-2014, 06:15 PM   #1
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Location: Harrisburg, PA
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Seneca Locking Fuel Cap and DEF Cap

I was wondering in any of the 2012+ Seneca owners have bought locking caps for their fuel tanks and DEF tank. If so, where to I get ones that fit?

I purchased two Stant 10412 caps but the thread size is wrong. They only go on a 1/4 turn.

Any suggestions?

Thanks.
Andy
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Old 10-17-2014, 06:03 AM   #2
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I found the locking fuel caps no problem. You can order them on eBay or from Raney's Truck Parts. The part number is FTA-C-13. The best price I found was $55.95 each.

The locking DEF cap was a challenge. It looks like Freight Defense is the only company that makes a locking DEF cap for Freightliners. Their part number is 100300. You can get the locking cap on eBay or Amazon or from the Manufacturer, but the best price ($43.95) is on eBay. It doesn't look like the non-locking cap, but I confirmed with the manufacturer that it does fit. I'll know for sure when it arrives later this week.

I think both of these are a must. My Freightliner dealer said he's had cases where people put diesel in their DEF tank and it cost $1000's to repair because it ruins the system. In fact if anything other than DEF fluid is put in it will do the same.
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Old 10-22-2014, 01:54 PM   #3
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The fuel caps fit nicely and the DEF cap from Freight Defense also fits. I'm now fully protected.
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