ARP GM Main Stud Kit - Duramax LBZ/Lmm 4125CMDBU Since it's hypoallergenic

Since it's hypoallergenic

227 cc Intake

and 210cc series cylinder heads

Lightweight anodized aluminum

Fuel Bowl Gasket

ARP GM Main Stud Kit - Duramax LBZ/Lmm 4125CMDBU Since it's hypoallergenicARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Main Stud Kit 12 Point Nuts