Vibrant Radiator Cap for Radiator Filler Neck # 20982 - 20983 0.25" 4224006 is a 4-pad rigid

4224006 is a 4-pad rigid race disc made with high quality

A classy black anodized COBB Redline badge sits atop

This adds Race Start to Porsche Normal and Sport drive modes for all cars (including vehicles that do not have Sport Chrono)

6266002 is a 6-pad rigid race disc made with high quality ceramic friction materials

Shift Points: skip-shifting in ‘Normal’ mode has been eliminated

Vibrant Radiator Cap for Radiator Filler Neck # 20982 - 20983 0.25" 4224006 is a 4-pad rigidFiller Neck Size: 1. 6875" Cap Pressure: 12 psi Vibrant Performance Radiator Caps are specifically designed to fit our Radiator Filler Necks. These Radiator Caps are constructed from 6061 Aluminum and attractively finished in a satin black.