BMW N54 Engine Drive Belt Tensioner & Idler Pulley Kit with Billet Aluminium Power Steering Pulley for E82 / E88 135i & E90 / E91 / E92 / E93 335i / 335xi 2007 - 2010

Address the most critical accessory drive failure on your BMW N54 engine with this comprehensive drive belt tensioner and pulley kit, featuring an upgraded billet aluminium power steering pulley that permanently solves one of the N54's most well-known and dangerous failure modes. The factory plastic power steering pulley on N54-equipped 135i, 335i, and 335xi models is notorious for cracking and breaking apart — when this happens, the pulley can strike the front subframe, the serpentine belt comes off, and worst of all, the broken belt can be sucked into the engine timing cover where it causes catastrophic timing chain damage. This complete maintenance kit replaces all the high-wear accessory drive components (serpentine belt, tensioner assembly, both idler pulleys) and includes the critical billet aluminium power steering pulley upgrade that prevents the entire failure cascade from ever occurring.

Features:

• Complete N54 accessory drive maintenance kit – addresses all critical wear components in a single comprehensive package

• Billet aluminium power steering pulley upgrade – permanently replaces the failure-prone factory plastic pulley with rigid aluminium construction that will not crack, shatter, or fail under sustained load

• Premium serpentine drive belt – manufactured to OE specifications for proper power transfer to the alternator, power steering pump, and A/C compressor

• Drive belt tensioner assembly – maintains correct belt tension across all driving conditions and engine RPM ranges

• Dual idler pulleys included (80mm and 90mm) – complete idler set for full accessory drive system refresh

• Direct OE replacement design – matches factory specifications for clean, modification-free installation

• Engineered specifically for the BMW N54 twin-turbo engine – addresses the platform-specific failure modes common to high-performance N54 applications

Specifications:

• Condition: 100% Brand New

• Type: N54 Drive Belt Tensioner & Pulley Kit with Power Steering Pulley Upgrade