ARP 201-MSKS50 Main Stud Kit BMW M3 E36 S50B30 S50B32 Crankshaft Main Bolts Upgrade

ARP 201-MSKS50 Main Stud Kit for BMW M3 E36 S50 Engines

Strengthen the bottom end of your BMW M3 E36 engine with the ARP 201-MSKS50 Main Stud Kit, engineered for S50B30 and S50B32 Euro engines. Designed for high performance and motorsport applications, this kit significantly improves crankshaft stability and engine block integrity under extreme loads.

Manufactured from premium 8740 chromoly steel, ARP main studs provide superior tensile strength and eliminate main cap walk, ensuring precise alignment of the crankshaft and consistent bearing clearances.

Why Upgrade to ARP Main Studs? 

OEM main bolts are not designed for high horsepower or aggressive driving. Under increased stress, they can stretch, leading to engine instability and potential failure.

ARP main studs offer a stronger and more reliable fastening solution, distributing load evenly across the main caps and reducing block distortion. This is essential for turbocharged engines, drift builds and track applications.

Key Features:

High strength 8740 chromoly steel construction

Heat treated for extreme durability and strength

Prevents main cap walk and block distortion

Improves crankshaft stability and bearing alignment

Provides consistent and accurate torque loading

Reusable and significantly stronger than OEM bolts

Ideal for performance, racing and turbo builds

Fitment:

BMW M3 E36

S50B30 3.0L Euro

S50B32 3.2L Euro

Engine Compatibility:

BMW S50B30 inline 6

BMW S50B32 inline 6

What is Included:

Main studs

High strength nuts

Hardened washers

Technical Data:

Brand ARP

Part Number 201-MSKS50

Material 8740 Chromoly Steel

Thread Type Precision rolled threads

Kit Type Main Stud Kit

The ARP 201-MSKS50 main stud kit is a critical upgrade for BMW M3 E36 S50 engines, delivering maximum strength, improved engine stability and reliability for high performance and demanding driving conditions.