Upgrade the performance of your BMW N54 engine with our custom-designed Head Stud Kit, brought to you by ARP - the world leader in fastener technology. This ARP2000 kit is engineered to replace BMW part # 11127574303 and is compatible with BMW N54B30 turbocharged inline-six engines found in a range of models, 135i, 335i, 535i, Z4 sDrive35i, X6 xDrive35i, and Alpina B3 Bi-Turbo. This kit comes with 14x 11mm Studs, 14x Washers, and 14x Nuts offering increased clamping force and enhanced head gasket sealing, which can prevent head gasket failure. This is particularly crucial for high-performance or turbocharged engines, as the increased cylinder pressure puts additional stress on the head gasket and bolts. Please note that this Head Stud Kit is not a retrofit from a Chrysler or Volvo stud kit. Unlike those kits, our kit was specifically designed for the BMW N54 engines. Installation Instructions: N54 Standard Kit: This Standard Kit is a hassle-free, Bolt-On kit that requires no additional modifications. It includes all the necessary components for installation, including: 10x 11mm Head Studs,10x 11mm Washers, 10x 11mm Nuts, 4x 9mm Head Studs, 4x 9mm Washers, and 4x 9mm Nuts. This comprehensive kit is designed to make installation easy and straightforward, providing all the necessary components for a successful upgrade. High Boost Kit, it is a MUST to drill and tap the four outer 9mm holes in the engine block to increase their size to 11mm holes. This will ensure that all the engine block holes are uniform in size and can accommodate all 14x 11mm Studs. Additionally, it will help distribute even force across the cylinder head-gasket surface. includes: 14x 11mm Studs, 14x Washers, and 14x Nuts. 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 Standard Kit: Torque all 11 mm studs as follows: Step 1: Tighten to 30 ft-lbs. Step 2: Tighten to 60 ft-lbs. Step 3: Tighten to 95 ft-lbs. Torque all 9mm studs to 45 ft-lbs. High Boost Kit: Step 1: Tighten to 30 ft-lbs. Step 2: Tighten to 60 ft-lbs. Step 3: Tighten to 95 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 Please note: After initial assembly, it is necessary to allow the engine to complete a full heat cycle, then re-torque your head studs to spec. This means allowing the engine to warm up to its normal operating temperature, remain at operating temperature for several minutes to ensure each component is uniformly heated, then turned off and cooled completely to ambient temperature. BMW N54 Applications: 1 Series 2007-2010 E82/E88 135i2011-2012 E82 1M 3 Series 2006-2010 E90/E91/E92/E93 335i2011-2013 E92/E93 335is 5 Series 2008-2010 E60/E61 535i 7 Series 2009-2012 F01/F02 740i / 740Li X6 Series 2008-2010 E71 X6 xDrive35i Z4 Series 2009-2016 E89 Z4 sDrive35i2010-2016 E89 Z4 sDrive35is Alpina B3 Series 2007-2013 E90/E91/E92/E93 B3 Bi-Turbo Alpina B3 S Series 2010-2013 E90/E91/E92/E93 B3 S Bi-Turbo Alpina D3 Series 2008-2013 E90/E91/E92/E93 D3 Bi-Turbo
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