Hybrid S Restraint B18 This Precision Works oil cap

This Precision Works oil cap is the easiest way to add -10AN fittings to your valve cover

covered in high-density injection foam for the perfect grip

includes SFI tag

Comfort-fit blended Nomex interior with top and back exhaust vents to help keep your scalp cool

Hybrid S Restraint B18 This Precision Works oil capSimpson's Hybrid S model is currently the only Frontal Head Restraint proven effective for 3 point harnesses, and it is also FIA and SFI approved. Additionally, in a partnership with Detroit auto manufacturers, the Hybrid S is third party tested to FMVSS208. The Hybrid S allows high performance driving instructors, auto manufacturing test engineers, and other drivers with 3 point harnesses access to the advantages of head restraint safety. The FIA