ARP High Performance Series Connecting Rod Bolt Kit - SB Chevy - 283-327 & Inline 6 DX2120K 6-cyl require 3 coils and

6-cyl require 3 coils and 8-cyl require 4 coils

Stilo ST5 Low Air Intake

Fit 5/8" diameter valve stem hole for use with center reliefs and Schrader (Fill) valve (ALL44065)

1984-1995 GMC C2500 Suburban

2015-2016 GMC Sierra 2500 HD

ARP High Performance Series Connecting Rod Bolt Kit - SB Chevy - 283-327 & Inline 6 DX2120K 6-cyl require 3 coils andPremium 8740 alloy chrome moly steel is heat treated to provide a tensile strength in the 190, 00 psi range, making these bolts much stronger up to five times stronger than OEM bolts. ARPs 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