BMW B48 ARP Head Stud Kit

$324.99
$324.99
$399.99
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This ARP2000 Head Stud Kit is designed for the turbocharged inline 4-cylinder B48 engines found in varias BMW chassis and Mini Engines. 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 stronger than factory bolts, ensuring your race engine stays together even under extreme conditions.

The Custom Age 625+ option is made from ARP's 625+ material that has a tensile strength of 260 ksi, 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 B48 builds and require a stronger head stud.

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.

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.

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

7 3 1 5
 9
10 6 2 4 8


BMW B48 Applications:

1 Series

2019-Present F40 118i / 120i / 128ti / 135i

2 Series

2014-2021 F22/F23 218i / 220i / 230i
2021-Present G42 220i / 230i
2020-Present F44 218i / 220i / 228i / M235i

3 Series

2018-Present G20 318i / 320i / 330i / 330e

4 Series

2020-Present G22/G23 420i / 430i / 430e

5 Series

2017-Present G30/G31 520i / 530i / 530e

6 Series

2017-Present G32 630i

7 Series

2015-2022 G11/G12 730i / 740e

X1 Series

2015-2022 F48 sDrive18i / sDrive20i / xDrive20i / xDrive25i
2022-Present U11 sDrive18i / xDrive20i

X2 Series

2018-Present F39 sDrive18i / sDrive20i / xDrive20i / xDrive25i / M35i

X3 Series

2017-Present G01 sDrive20i / xDrive20i / xDrive30i

X4 Series

2018-Present G02 xDrive20i / xDrive30i

X5 Series

2018-Present G05 xDrive25i / sDrive25i

Z Series

2018-Present G29 Z4 sDrive20i / sDrive30i

Toyota B48 Applications:

A90 / A91 Supra

2020-Present GR Supra 2.0

MINI B48 Applications:

MINI Hatch [F55/F56/F57]

2014-Present Cooper S
2015-Present John Cooper Works (JCW)

MINI Clubman [F54]

2015-Present Cooper S
2016-Present John Cooper Works (JCW)

MINI Convertible [F57]

2016-Present Cooper S
2016-Present John Cooper Works (JCW)

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