This fuel tank cap seal flapper is designed to retrofit all RCI Circle Track cells with the 16 bolt oval type 4" cap assemblies.
This flapper is designed to slow the fuel leakage in the event of a vehicle roll over.
A must have safety item!
Note: Per vendor, this flapper valve should be replaced on a yearly basis.
IMCA Approved.
Summary: Fits good
Yes, I recommend this product.