Includes: – (10x) 8740 Chrome Moly Studs – (10x) Parallel Ground Washers – (10x) 8740 Chrome Moly 12 Point Nuts – (1x) Ultra-Torque Fastener Assembly Lube. Replacement Upgrade for these OEM Part Numbers: MD121887, MD020733. More Info: ARP 8740 Chrome Moly studs have a tensile strength of 200,000 psi. These are thread rolled after heat-treat which gives them about 1000% (10x) better fatigue strength than studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way because it’s tough on tooling, but the results are well worth the extra effort! Your address must be confirmed.