IMS Quick Guide

1997-1999 911®, Boxster® Porsche® Cars (M96 Engine) 

From 1997 to 1999, Porsche used a dual row intermediate shaft bearing.

You’ll need the IMS Retrofit™ Dual Row Kit (106-08.4).

2006-2008 911®, Boxster®, Cayman® Porsche® Cars (M97 Engine) 

A larger, single row bearing was used. It is not directly serviceable – replacement requires engine disassembly.

You’ll need the IMS Retrofit™ MY06-08 (106-08.30), which replaces the original bearing with a dual row unit and makes it serviceable without disassembling the engine in the future.

2000*-2005 911®, Boxster® Porsche® Cars (M96 Engine) 

Smaller, single row bearings were used. By far these are the most problematic.

You’ll need the IMS Retrofit™ Single Row Pro Kit (106-08.2.2), which replaces the original single row bearing with a dual row unit.

*NOTE: Some early model year 2000 cars may still utilize the dual row bearing. THE ONLY RELIABLE METHOD TO DETERMINE WHICH TYPE WAS USED IS A THOROUGH VISUAL INSPECTION.

Here are some of the ways you can distinguish if you have a genuine LN Engineering Retrofit Kit.

All LN Engineering bearings are manufactured exclusively for us and are not sold under any other brand or used by any other supplier. LN Engineering, as well as the part number and the build date for the bearing.  Additionally, the center shoulder bolt & flange are marked with date codes (either engraved or lasered onto the part), allowing us to identify when each component was manufactured.

All LN Engineering Retrofit kits come with an asset tag along with removable serial number tags to be used when registering your bearing as well as for your records. LN Engineering does not offer replacement tags for any reason whatsoever, so you can be assured the only way you can get a tag is with a bearing purchase.

The IMS flange provided with the LN Engineering IMS Retrofit kit also has a date stamp for tracking purposes.

All boxes will have matching date stamps on the outside which will match the date stamp marked on the flange and center shoulder bolt.

When inspecting your kit, ensure it has not been opened or contaminated.  Although we have taken great steps to prevent IMS Retrofit kits from being returned and resold, if you feel that your kit has been previously opened or even possibly installed, contact your point of purchase immediately and ask for a replacement & also notify LN Engineering of the incident.

All LN Engineering IMS Retrofit kits use bearings that are assembled to our specifications exclusively for us in the United States using the highest quality components sourced from Japan and the United States. Beware of inferior “ceramic” bearings! Likewise, the RND RS Roller IMS Retrofit uses only the highest quality cylindrical roller bearings from suppliers like SKF, FAG, Timken, and Koyo. You won’t find inferior bearings in any Retrofit kit manufactured and sold by LN Engineering.