5150 AutoSport Head Gasket & Head Stud Kit, BMW S58

Head Gasket Genuine BMW Head Gasket for BMW S58 engines. Factory thickness.  Replaces OEM Part Number: 11128088729  11-12-8-088-729  11 12 8 088 729  11.12.8.088.729 Before installation, it is crucial to have the mating surfaces of the cylinder head and block professionally cleaned and resurfaced to ensure they are completely flat. Head Gasket Installation instructions: Ensure engine block and cylinder head surfaces are clean, flat, and free from any debris, oil, or coolant. Install head gasket on engine block and ensure it is properly aligned. Avoid twisting or bending the gasket during installation. Place the cylinder head on top of the gasket and install head studs in their correct positions. Follow the ARP's recommended torque specifications and tighten the studs in proper sequence to ensure even clamping force across the gasket. After the initial tightening, re-torque the head bolts or studs after the engine has been started and then allowed to cool to room temperature. This will ensure that the gasket is properly seated and compressed. It is recommended to not use any additional sealant on the gasket. Using additional sealant can hinder the performance of the gasket. Head Stud Kit: The ARP2000 Head Stud Kit is designed for the turbocharged inline 6-cylinder BMW S58 engine.  As you increase the power output of your engine beyond its factory specifications, the head and block may start to separate, causing factory bolts to stretch and fail. ARP Head Studs are significantly stronger than factory bolts, ensuring your race engine stays together even under extreme conditions. The Custom Age 625+ option is made from a material that has a tensile strength of 260 ksi, which is substantially higher than the 190 ksi of the ARP 2000 head stud. It's an ideal choice for individuals who want to push the limits of their S58 builds and require a stronger head stud. Head Stud Kit Installation Instructions:  1. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser. 2. Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper fit, length and dimension. 3. If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP THREAD SEALER. 4. Screw studs into the block “HAND TIGHT ONLY”. 5. Install the cylinder head(s) and check for binding or misalignment. 6. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low quality lubricants are used. PRELOAD (TORQUE) RECOMMENDATIONS 7. Following the manufacturers recommended torque sequence tighten the nuts steps 1-3 ARP2000 Step 1: Tighten to 30 ft-lbs. Step 2: Tighten to 60 ft-lbs. Step 3: Tighten to 90 ft-lbs. Custom Age 625+ Step 1: Tighten to 30 ft-lbs. Step 2: Tighten to 60 ft-lbs. Step 3: Tighten to 110 ft-lbs. with ARP Ultra-Torque fastener assembly lubricant Bolt Torque Sequence  12  10 4 2 6 8 14 13 7 5 1 3 9 11