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Home > Porsche CatalogBoxster (1997-04) >  Porsche Boxster Recommended Upgrades > LN Engineering IMS Retrofit Kits

LN Engineering IMS Bearing Retrofit Kits

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  WARNING: Your Intermediate Shaft Bearing (IMS) could be failing! There are not many warning signs of an impending IMS failure short of a "death rattle" that occurs as the bearing fails and comes apart. If caught early enough, a leak at the IMS hub flange may be signs of a failing bearing, but can be improperly identified as a rear main seal (RMS) leak at times. If doing a RMS, it's recommended to do an Intermediate Shaft Bearing (IMS) retrofit at the same time, as the majority of the labor is identical to that of performing the RMS service.

To see examples of some failed Intermediate Shaft Bearing (IMS), click here to watch a short video.

LN Engineering's single and dual row IMS Retrofit Kits are designed to replace the original bearings with like sizes and with similar load ratings, without engine disassembly. Their kits replace the factory sealed bearing with a new, severe duty custom ceramic hybrid roller ball bearing for reduced friction and superior performance in poorly lubricated operating conditions and replaces the factory IMS flange hub, bearing support, and fastener with a stronger, revised billet chromoly assembly. Kits also include new micro encapsulated cover bolts.

Single or Dual Row? Typically, 99% of models from 1997-99 have dual row, and 99% of models from 2002-05 have single row - figures are estimated. Models from 2000 and 2001 are the most unpredictable, and require inspection to determine the bearing type. For complete information about Intermediate Shaft Bearing (IMS) identification and failure, read our Technical Article and also visit LN Engineering's IMS page.

NOTE: Use of the appropriate IMS Bearing Puller (sold separately) is highly recommended for proper extraction of the IMS Bearing without any damage to the engine or intermediate shaft.
LN Engineering M96 Intermediate Shaft Bearing (IMS) Retrofit Kit (inc. hub, retainer, and bearing), for Single Row IMS

No Longer Available


LN Engineering M96 Intermediate Shaft Bearing (IMS) Retrofit Kit (inc. hub, retainer, and bearing), for Dual Row IMS



LN Engineering Intermediate Shaft Bearing (IMS) Puller/Counterstay, for extraction of single or dual-row bearing intermediate shaft bearings safely. Includes: puller, driver, 5 chain and 3 chain engine cam locks, TDC lock pin, and broken stud easy-out.



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Page last updated: Tue 1/16/2018 12:04:35 AM