iwis 90001170 Engine Timing Chain Kit

BMW Timing Chain Kit for Bank 1

This iwis engine timing chain kit is built for BMW V8 applications that need OEM-standard valve train service parts. Part number 90001170 includes the timing chain, chain tensioner, guide rail, guide rail, and slide rail-top for cylinders 1-4, bank 1 intake and exhaust.

Key Features

• OEM standard engine timing chain kit from iwis
• Endless timing chain design
• Chain guides included
• Chain tensioner included
• 140-link chain configuration
• Direct service solution for BMW 550i, 650i, X5, 750i, 750Li, 545i, 645Ci, 745i, and 745Li applications

Detailed Description

Part number 90001170 is an iwis timing chain kit for BMW engines covering cylinders 1-4 on bank 1 intake and exhaust. It is specified for 2002-2010 BMW 745i, 745Li, 545i, 645Ci, 550i, 650i, 750i, 750Li, and X5 models listed in the fitment data. The kit uses an endless timing chain and includes the chain tensioner plus the required guide components for a complete timing service on the listed bank.

This BMW timing chain kit is a practical choice when servicing timing wear on the engine valve train. The iwis 90001170 configuration is matched to the listed BMW V8 applications and supports accurate chain routing and tension control during repair. Part number 90001170 is also a useful reference when sourcing an OEM-standard BMW chain kit for bank 1 timing service.

What It Helps Address

• Timing chain stretch or chain wear on the listed BMW engines
• Noise from worn chain guides or a weak tensioner
• Timing instability caused by aged valve train components
• Service replacement for bank 1 intake and exhaust timing hardware
• Restoration of proper chain tracking in BMW V8 timing systems

Installation Notes and Tips

Verify engine code and bank 1 service requirements before installation. This kit is specified for cylinders 1-4, bank 1 intake and exhaust, so confirm the repair matches the vehicle’s timing layout. Follow BMW timing procedures, set the engine at the correct timing position, and inspect related valve train components before reassembly.

Quality Assurance

iwis supplies OEM-standard timing components, and this kit is built to the listed factory-style application details for BMW timing service.