ARP 100-1203 Header Bolt & Stud Kit for CHEVROLET Small Block. 0.750? UHL. drilled ymm_9 Fitment notice: For Porsche 911

Fitment notice: For Porsche 911 Carrera 3

The sound has been tuned to ideally suit the in-line six-cylinder turbo engine

washers included Fastener Style: Stud

the Pro Series Wave-Loc bolts are designed to deliver maximum reliability under extreme loads and high engine speeds

It’s an inexpensive insurance policy to protect your high performance engine regardless of the brand of water/methanol injection system you are using

ARP 100-1203 Header Bolt & Stud Kit for CHEVROLET Small Block. 0.750? UHL. drilled ymm_9 Fitment notice: For Porsche 911Specifications Socket Size(s) 3 8 12pt UHL (Qty: 12) 0. 750 Thread Size 3 8 washers included