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IMS Retrofit Kits

IMS Retrofit: The First and Original IMS Bearing Replacement Kit for Porsche Boxster and 911 Models

The IMS Retrofit Kit is the original replacement for the problematic intermediate shaft bearing in Porsche Boxster, 996, and early 997 models with the M96 engine. The IMS Retrofit intermediate shaft upgrade is to be used as part of preventative maintenance at recommended service intervals. The tools and procedure to replace the IMS bearing was developed and patented by Flat 6 Innovation's Jake Raby and LN Engineering's Charles Navarro, allowing owners of Porsche Boxster and 911 models to replace their IMS bearing before an intermediate shaft bearing failure that can be catastrophic to your Porsche engine.

Prior to the IMS Retrofit, the IMS bearing was a death sentence for most engines with no parts or procedure to service the factory sealed ball bearing. All Boxster and 996 vehicles from 1997 up to some early 2005 997.1 models can suffer from an IMS bearing failure, but good thing is that the bearing can be changed without engine disassembly. However, once the bearing fails, it's too late, requiring the engine to be torn down to be rebuilt and in some cases, replaced if the failure is catastrophic! Besides a loss of camshaft timing and valve to piston contact, resulting in bent valves, the debris generated by an IMS bearing failure can spread throughout the engine, causing collateral damage to other critical engine components. There is no way to ensure that there isn't damage to your engine after a failure without a complete teardown.

For more information on the IMS Retrofit, visit http://imsretrofit.com or read the LN Engineering Porsche IMS Bearing FAQ.

LN Engineering Single Row Pro and Classic Dual Row IMS Retrofit Bearing Replacement Kit for Porsche Boxster and 911 Models


Why buy an IMS Retrofit Kit from LN Engineering?

LN IMS Retrofit kits feature custom-made, ceramic hybrid ball bearings made exclusively for LN Engineering LLC in the United States using Japanese races, ball separators, and Coors Tek Cerbec sintered silicon nitride balls. All other bearing replacements are just imitations. Only the IMS Retrofit's patented Single Row Pro and Faultless IMS Tool allow for the installation of a dual row bearing in the place of a single row bearing, doubling the strength with a plug and play solution that doesn't require any modifications to your engine.

Genuine LN IMS Retrofit kits come laser etched, engraved, and serial numbered to validate their authenticity. LN Engineering also maintains a bearing registry to help validate registered installations that helps increase your vehicle's resale value as the first question most buyers ask is if the IMS bearing has been done. Existing Retrofit customers looking to service their IMS or upgrade to an IMS Solution can also benefit from our trade-up program.

With 35,000+ IMS Retrofit and 3000+ IMS Solution installed since 2008 (as of Jan 2020), LN Engineering's IMS bearing solutions for Boxster and 996 models are trusted by industry professionals and discerning Porsche owners worldwide.

LN Engineering offers fast and free shipping and has industry leading technical support. We also offer an IMS bearing replacement tool rental program including the rear main seal tool, available exclusively to retail customers who purchase their IMS Retrofit or IMS Solution from the LN Engineering website.


What IMS Retrofit bearing does my Porsche Boxster, 996, or early 997 need?

* 1997-1999 engines are equipped with dual-row bearing. 2000-2001 models can have either single- or dual-row bearing. 2002-2005 engines have a single-row bearing. Early 997 models with 2005 build dates may have the serviceable single row bearing that can be fitted with the 106-08.2.2 Single Row Pro IMS Retrofit.

What IMS Retrofit bearing do I need for a 997 or 987 Boxster or Cayman?

*M97 engines found in model year 2006 through 2008 Porsche 997 and 987 Boxster and Cayman models have a non-serviceable IMS bearing. As full engine disassembly is required to correctly replace the bearing with an IMS Retrofit, we recommend removing the grease seal off the original bearing to allow the engine oil to properly lubricate the original bearing

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