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ARP Automotive Racing Products

ARP Head Stud Kit, BMW N54

ARP Head Stud Kit, BMW N54

Regular price $479.99 USD
Regular price Sale price $479.99 USD
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Shipping calculated at checkout.

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 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.


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


1 Series
E82 / E88 135i N54
E82 / E88 1M
3 Series
E90 / E91 / E92 / E93  335i N54
E90 / E91 / E92 / E93 335is N54
E90 / E91 / E92 / E93 335xi N54 
5 Series
E60 / E61 535i
E60 / E61 535xi
7 Series
F01 / F02 740Li
F01 / F02 740i
X6 Series
E71 X6 xDrive35i N54
Z Series
E89 Z4 sDrive35i
E89 Z4 sDrive35is


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