These o-rings replace the o-rings in our hi performance pushrod tube sets number 00-4108-0 & 00-4109-0. Replacement O-Rings for the center of the pushrod tubes Material: Rubber Fits: 00-4108-0 & 00-4109-0 Quantity: 16 PiecesPush Rod Tube Seals for Center Of Tube 16 Pieces