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Intermediate shaft bearing (IMS) kit, with all ancillary parts. 986 Boxster 2.5ltr Manual - IMSKIT986MAN.1
IMSKIT986MAN.1
Product Information
Product Information

IMS Bearing Upgrade Kit with Full Ancillaries – Essential Reliability Upgrade for 986 Boxster 2.5ltr  with Manual Gearbox

This IMS bearing upgrade kit includes everything needed to replace and enhance the intermediate shaft bearing in the Porsche 986 Boxster 2.5ltr with M96 engines. This complete package includes the upgraded bearing assembly, new hardware, seals, exhaust clamps, sleeves and all required ancillaries to streamline installation.

Fits:

  • Porsche Boxster 986 2.5L 1997-99

The IMS (Intermediate Shaft) bearing supports the intermediate shaft that drives the camshafts. When the original bearing design deteriorates, it can fail without warning—leading to catastrophic engine damage. Upgrading to a modern, precision-engineered bearing significantly improves durability and long-term reliability, making this kit one of the most important preventative maintenance investments for these Porsche models.

What the IMS Bearing Upgrade Kit Does

This complete kit:

  • Replaces the vulnerable original IMS bearing with a fortified, precision-engineered alternative
  • Reduces friction and improves lubrication stability
  • Protects the intermediate shaft from premature wear
  • Prevents metal debris contamination inside the engine
  • Restores confidence in long-term engine reliability
  • Includes all necessary hardware, clamps, sleeves and seals for a seamless installation

Designed to meet the demands of both road use and high-performance driving.

Why IMS Bearings Fail in Porsche M96 Engines

Common causes include:

  • Lubrication starvation, leading to ball bearing scoring
  • Seal degradation, causing grease loss and overheating
  • Contaminants entering the bearing assembly
  • High engine speeds, accelerating wear
  • Age-related material fatigue
  • Inadequate internal lubrication flow in the early intermediate shaft design

Symptoms are often subtle—or non-existent—until severe engine damage has occurred.

Why the IMS Bearing Should Be Upgraded

Upgrading the IMS bearing provides:

  • Prevention of catastrophic bearing failure
  • Significant extension of engine lifespan
  • Peace of mind for owners of 986 Boxster models
  • A stronger, more stable bearing with improved lubrication path
  • Reduction in maintenance costs over time
  • A complete installation solution thanks to included ancillaries

This kit is essential for any Porsche owner planning long-term stewardship, spirited driving, or engine rebuild work.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

IMSKIT986MAN.1
106-08.2
106-08.2R
106-08.4R
106-08.4
99610590102EPS
0PB105249
99907309202
90006713103
99610722560
90012310630
9001231473
99970734440
99907605301
99611111302
90038000501
99611111001
99611120900
99908405202
90007428702
98611691100
9M987.1LWF

The product you are viewing cross references to these numbers