1998-2000     E39     523i

ARP Standard Head Stud KitCustom-designed for N54 engines

available in wastegated & non-wastegated options

This Cometic MLS Head Gasket is specifically engineered to replace BMW part # 11121721546

G Series G45 is available in 2 additional compressor inducer sizes

DEKA High Performance ZF 8HP7X Transmission Upgrade N55B30 1998-2000 E39 523iWhen enhancing your engine's performance, it is crucial to upgrade your transmission, ensuring that it will reliably perform under the increased power output generated by the engine. DEKA Clutches & Transmissions excels in providing high quality drivetrain upgrades. Using expert craftsmanship and upgrading OEM components with CNC machined billet components, Deka's commitment to precision, quality, and consistency in their transmission upgrade services