Thank you.Pintle cap. Can be bought with the seals and filters in a kit. Search Bosch Type 3 EV6 service kit.
Some kits come with improper O-rings, smaller than needed. If the fuel rail goes in without cussing, displace the new O-rings and use your old ones. Twice actual for the O-rings that comes into fuel rail itself. You don't want any gasoline fire in engine compartment, right?Bosch 0280155831Lube the O-rings a little bit to help them seat.