iwis 90001172 Engine Timing Chain Kit

BMW Timing Chain Kit for Bank 2

The iwis Engine Timing Chain Kit, part number 90001172, is an OEM-standard timing service kit for BMW and Land Rover applications with Bank 2 cylinder coverage. It includes the timing chain, chain tensioner, and guide rails needed for the specified engine positions, with an endless chain design and 140-link configuration.

Built around iwis Engine Timing Chain Kit components, this kit is aimed at restoring proper cam timing on higher-mileage engines where chain stretch, guide wear, or tensioner fatigue can affect performance. It is a direct-fit solution for select BMW 540i, 545i, 645Ci, 740i, 740iL, 745i, 745Li, 750i, 750Li, 550i, 650i, X5, and 840Ci applications, plus the 2003-2004 Land Rover Range Rover listed below.

Key Features

• OEM-standard engine timing chain kit from iwis
• Endless timing chain design
• 140-link chain specification
• Chain guides included
• Tensioner included
• Engine timing chain kit for Bank 2 intake and exhaust service
• Part number 90001172 for accurate ordering and lookup

Detailed Description

This iwis timing chain kit is specified for cylinders 5-8 on Bank 2 and includes the timing chain, chain tensioner, guide rail, guide rail, and slide rail-top referenced in the manufacturer description. The kit is intended for BMW Chain Kit 48-01 applications and is listed for multiple BMW V8 platforms, including 2006-2010 BMW 550i, 2006-2010 BMW 650i, 2000-2010 BMW X5, 2006-2008 BMW 750i, 2006-2008 BMW 750Li, 2004-2006 BMW 545i, 2004-2005 BMW 645Ci, 2002-2005 BMW 745i, 2002-2005 BMW 745Li, 1997-2003 BMW 540i, 1997-2001 BMW 740i, 1996-2001 BMW 740iL, and 1996-1997 BMW 840Ci. It also fits 2003-2004 Land Rover Range Rover, Bank 2, with the listed chain, tensioner, tensioner rail, guide rail, and upper slide rail configuration. This part number 90001172 is a practical OE-style replacement when servicing timing components on these engines.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Kit Addresses

• Timing chain noise from wear or stretch
• Rattling at startup caused by a weak tensioner
• Guide rail wear that can affect chain tracking
• Cam timing irregularities on Bank 2
• Engine performance issues related to timing component wear

Installation Notes and Tips

• Verify engine code, cylinder bank, and model year before ordering.
• Confirm Bank 2 service requirements match the listed notes for cylinders 5-8.
• Inspect related timing components and sealing surfaces during disassembly.
• Follow BMW timing procedures and cam/crank alignment specifications during installation.
• Replace worn guides and tensioner-related components as a complete timing service on the affected bank.

Quality Assurance

iwis supplies OEM-standard timing components, and this kit is built to match the listed application requirements for BMW and Land Rover timing service work. Part number 90001172 helps ensure correct identification for the specified engine platforms.