1997 D1 w/AEL - Found this in the swirl pot of my fuel pump. Pump was working fine. I'd been getting a P0451-Fuel Tank Pressure Sensor Signal Error Fault.
I swapped for a new pump but found this inside my old pump.
Any ideas?
TIA
dcphotos

 

I think the locking ring is red plastic so perhaps bits from that

Genuine Fuel Pump Locking Ring NTC5858 For Land Rover Discovery I, Defender 90 And 110, Range Rover Classic, And Range Rover P38 (See Fitment Years) - Search Shopping

 

Mine has a metal ring. Thanks for the reply though.

 

Just a guess, but could be a small washer-type seal for the old pressure sensor. Otherwise, came in through the filler tube.

 

JohnZo thanks for your reply.
That’s what I was thinking too.
Was hoping someone could tell for certain.
I pieced it back together as best I could. Not even sure if it’s correct.
It does look like a one-way check valve/flap.

dcphotos

 

Probably this ...

 

hrhoward,
Must be it! Thanks.
I looked at all the exploded diagrams I could fine online but did't see that.
dcphotos