IMS Replacement Bearing

Bearing shell for intermediate shaft (no/shoulder). Require 2 per engine, single item only.



Fits:
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3

This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500

Click 'Zoom in' for large parts diagram.
Diagram ref no 30.

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Related, superseded, cross reference or alternative numbers for comparison.

99610143571

The product you are viewing cross references to these numbers

Bearing shell for intermediate shaft (no/shoulder). Require 2 per engine,  Price is Each one 



Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3

This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500

Click 'Zoom in' for large parts diagram.
Diagram ref no 30.

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Related, superseded, cross reference or alternative numbers for comparison.

99610143571

The product you are viewing cross references to these numbers

Bearing shell for intermediate shaft (no/shoulder) - Sold as a pair 

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 turbo / GT2 / GT3
Porsche 997.1 turbo / GT2 / GT3
Porsche 997.2 GT2 / GT3

This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500

Diagram ref no 30.

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Related, superseded, cross reference or alternative numbers for comparison.

99610143571

The product you are viewing cross references to these numbers

Bearing shell for intermediate shaft (with shoulder).
Sold as PAIR / Requires 1 pair per engine

Pair, includes two bearing shells for the intermediate shaft, with one shell having a thrust shoulder. This bearing set is used to control axial play and radial support of the intermediate shaft. These precisely machined shells maintain the correct end-float, allowing accurate cam timing and smooth chain drive function under high RPM loads.

Fits:
Porsche 911 - 1965 to 1989
Porsche 914/6 - 1970 to 1976
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 turbo / GT2 / GT3
Porsche 997.1 turbo / GT2 / GT3
Porsche 997.2 GT2 / GT3

This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700
- 99310113701

Diagram ref no 29.

These high-quality bearings resist wear, maintain stability under loading, and reduce friction. The shoulder shell is designed to handle axial load and keep the shaft from shifting. Both shells are matched to OE tolerances for crush and thickness to preserve ideal oil film clearance and ensure long life.

•  Location: Inside the engine case, at the intermediate shaft bore, flanking the connecting housing
•  Function: Provides radial support and axial control (shoulder shell) for the intermediate shaft

Over time, the intermediate shaft bearing shells may wear, lose geometry, or develop surface fatigue. Symptoms of failure include increased endplay (shaft axial movement), chain rattle, timing variation, and rapid wear of adjacent sprockets or tensioners.

This pair should be replaced during any engine rebuild, crankshaft pull, or when measurements show endplay outside specification. Installing fresh shells restores proper shaft location and timing stability for durable performance.

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

99610113780

The product you are viewing cross references to these numbers

Bearing shell for intermediate shaft (with shoulder).
Sold as PAIR/ Requires 1 pair per engine



Fits:
Porsche 964
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3

This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700

Click 'Zoom in' for large parts diagram.
Diagram ref no 29.

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

99610113780

The product you are viewing cross references to these numbers

Bearing shell for intermediate shaft (with shoulder).
Sold as single / Requires 2 per engine



Fits:
Porsche 911
Porsche 964
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3

This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700

Click 'Zoom in' for large parts diagram.
Diagram ref no 29.

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

99610113780

The product you are viewing cross references to these numbers

IMS Intermediate Shaft Bearing Upgrade Eternal Fix -58MM FLANGE - OPEN ENGINES (while doing an engine rebuild)



Fits:
Porsche 997 2005-08
Porsche Boxster 987
Porsche Cayman 987
(Not for M96 Engines)

Porsche Ims Intermediate Shaft Bearing Upgrade - Eternal Fix with Oil Pressure Feed - 58 MM - Open Engine Permanently Fix Your Intermediate Shaft With The Eternal Fix! Unlike Failure Prone Ball Bearings, Eps Uses A Patented Cylindrical Bearing With Thrust Control.
Prevent future catastrophic engine failure permanently with the only true Eternal Fix for the notorious Porsche intermediate shaft bearing. Unlike the other failure-prone ball bearing products that the original IMS and other upgrades on the market use, EPS uses a patented cylindrical bearing with thrust control that can be pressed directly into the back of the engine without disassembly. The cylindrical bearings have over 12 times the load capacity of other ball bearing solutions making the EPS IMS bearing the clear choice. Backed by a full 5-year warranty and includes an oil feed modification kit. Order yours today!

WHAT MAKES OUR SOLUTION DIFFERENT?

Roller bearings are not intended for carrying large axial loads. Similar to failure-prone ball bearings, when cylindrical roller bearings are used for thrust control, the roller becomes compromised due to the limited surface contact area on the sides of the rollers. The results of using a cylindrical bearing for thrust control will be similar to all other ball bearing solutions.

In our patented system, we use a 15mm cylindrical bearing with thrust control that allows for the separation of the axial load from the radial load. Our roller bearings do NOT carry the axis load (thrust control) on the side, which leaves the roller free to carry only the radial load (main load). The axial load is carried exclusively on the entire permitter of the outer race. This results in a bearing that is not overloaded and will last the lifetime of the engine.

EPS recommends using this product in conjunction to the Rear Main #8 Seal and Housing

IMS Intermediate Shaft Bearing Upgrade Eternal Fix -62MM FLANGE - CLOSED ENGINES (MUST USE OUR BORING TOOL IN ORDER TO INSTALL)
the boring tool can be purchased or rented from us
Code: 987997IMSTOOL

Fits:
Porsche 997 2005-08
Porsche Boxster 987
Porsche Cayman 987
(Not for M96 Engines)

Porsche Ims Intermediate Shaft Bearing Upgrade - Eternal Fix with Oil Pressure Feed - 62 MM - Closed Engine Permanently Fix Your Intermediate Shaft With The Eternal Fix! Unlike Failure Prone Ball Bearings, Eps Uses A Patented Cylindrical Bearing With Thrust Control.
Prevent future catastrophic engine failure permanently with the only true Eternal Fix for the notorious Porsche intermediate shaft bearing. Unlike the other failure-prone ball bearing products that the original IMS and other upgrades on the market use, EPS uses a patented cylindrical bearing with thrust control that can be pressed directly into the back of the engine without disassembly. The cylindrical bearings have over 12 times the load capacity of other ball bearing solutions making the EPS IMS bearing the clear choice. Backed by a full 5-year warranty and includes an oil feed modification kit. Order yours today!

WHAT MAKES OUR SOLUTION DIFFERENT?

Roller bearings are not intended for carrying large axial loads. Similar to failure-prone ball bearings, when cylindrical roller bearings are used for thrust control, the roller becomes compromised due to the limited surface contact area on the sides of the rollers. The results of using a cylindrical bearing for thrust control will be similar to all other ball bearing solutions.

In our patented system, we use a 15mm cylindrical bearing with thrust control that allows for the separation of the axial load from the radial load. Our roller bearings do NOT carry the axis load (thrust control) on the side, which leaves the roller free to carry only the radial load (main load). The axial load is carried exclusively on the entire permitter of the outer race. This results in a bearing that is not overloaded and will last the lifetime of the engine.

EPS recommends using this product in conjunction to the Rear Main #8 Seal and Housing



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

987997IMS62MM

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Outright IMS Boring Tool for Installing IMS Bearing



This boring tool can be also be rented from us
for installing our 62mm IMS kit Code: 987997IMS62MM. For rental please see other listings.

When you purchase this product you will be supplied with brand new set of tools that haven't been used on any jobs.
We will not accept a return of this part if we find out that it is in used condition.


For IMS Boring Tool instructions please CLICK HERE

Rental IMS Boring Tool for Installing IMS Bearing



This boring tool can be purchased or rented from us
for installing our 62mm IMS kit Code: 987997IMS62MM

Costs
The boring tool cost will be refunded once the tool is returned to us and checked. The boring tool can also be purchased outright for £1895.00

For IMS Boring Tool instructions please CLICK HERE

Thrust Bearing for Intermediate Shaft. Sold as EACH.



Fits:
Porsche 911 1965-89
Porsche 914
Porsche 930 Turbo 1975-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3

Click 'Zoom in' for large parts diagram.
Diagram ref no 31

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

99610113780

The product you are viewing cross references to these numbers