Here's a kit to freshen up your Hilborn/Kinsler barrel valve.

It includes a new Stat-O-seal for the secondary port, o-rings for the metering piston axle, nozzle hose fittings and inlet port, and new stainless screws and lock washers for reinstallation on your injector.

If your application requires gasoline compatible o-rings, please specify in the comments section of your order.