ENGINE BLT KIT SBM HEX SS Shock and Strut Components Stock thermostats can drift and

Stock thermostats can drift and stick over time

they reduce pressure drop and improve throttle response by eliminating the flex and internal collapse of factory rubber piping

The lightweight design can be installed by a single person with basic tools

Modern engines run tight temperature windows for efficiency and emissions

ENGINE BLT KIT SBM HEX SS Shock and Strut Components Stock thermostats can drift andThe ENGINE BLT KIT SBM HEX SS is a premium grade fastener kit from ARP, the leading manufacturer of performance engine fasteners. These components are made from 8740 chromoly steel with precision rolled threads and heat treated to 190,000 200,000 psi tensile strength for reliable service. Part 21378 is configured for its specific application with attention to fitment requirements. ARP fasteners feature thread root radius improvements that reduce