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IMS Ancillary Parts

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DISPLAYING 1 to 16 (of 21 products)
1 2
99610143571/2KIT
Product Information
Product Information
2 x Bearing shell for intermediate shaft (no/shoulder) 
2 x Bearing shell for intermediate shaft (with shoulder).
Set of 4pcs 

Set of 4 includes four bearing shells for the intermediate shaft. 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 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

Diagram ref no 29 & 30.



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Related, superseded, cross reference or alternative numbers for comparison.

99610143571
99610143570
90110113500
99310113500
99610143571
99610113780
99310113701
91610113700
99310113700

The product you are viewing cross references to these numbers
Special Order item
99610143571
Product Information
Product Information
Bearing shell for intermediate shaft (no/shoulder). Require 2 per engine, single item only.

porsche

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Related, superseded, cross reference or alternative numbers for comparison.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
99610143570
90110113500
99310113500
99610143571

The product you are viewing cross references to these numbers
99610143571/1
Product Information
Product Information
Bearing shell for intermediate shaft (no/shoulder). Require 2 per engine,  Price is Each one 

glyco

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Related, superseded, cross reference or alternative numbers for comparison.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
99610143570
90110113500
99310113500
99610143571

The product you are viewing cross references to these numbers
99610143571/2
Product Information
Product Information
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
99610143570
90110113500
99310113500
99610143571

The product you are viewing cross references to these numbers
99610113780/2
Product Information
Product Information
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
99610113780
99310113701
91610113700
99310113700

The product you are viewing cross references to these numbers
99610113780/1
Product Information
Product Information
Bearing shell for intermediate shaft (with shoulder).
Sold as PAIR/ Requires 1 pair per engine

glyco

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
99610113780
99310113701

The product you are viewing cross references to these numbers
Special Order item
99610113780::1
Product Information
Product Information
Bearing shell for intermediate shaft (with shoulder).
Sold as single / Requires 2 per engine

porsche

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
99610113780
02-8005 STD

The product you are viewing cross references to these numbers
Special Order item
93010519801
Product Information
Product Information
Gasket for intermediate shaft (IMS) cover plate. 

Please check the part number of your IMS cover plate to ensure compatibility. This gasket is designed for plates with part numbers 91110516200 and 91110516201.

Fits:
Porsche 911 1965-1982
Porsche 911 Turbo (930) 1975-82
Porsche 914-6 1970-72

Porsche 911 SC 1983* 
Porsche 911 Turbo (930) 1983*

Diagram ref. 49.

*NOTE: Midway through the 1983 model year, Porsche changed the IMS cover plate from a three-nut design to a two-nut circular cover. If your vehicle has the circular cover, an O-ring is used instead of this gasket. Please see below for more information:

This gasket (three-nut design) is compatible with 1983 SC models with an engine number up to and including: 
63D 4069 (Standard models), 64D 3716 (US/Canadian market), and 63D 8154 (Japanese market). For 911 Turbo models, this gasket fits engines with numbers up to and including 67D 0711 (all markets).

Given the age of these vehicles, engine swaps or modifications are common. We strongly recommend verifying which cover is fitted to your engine before ordering. 
If your cover plate is larger with three holes, this gasket will fit. If your cover plate is smaller, circular, with two holes, this gasket will not fit.

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

93010519801
90110519804
93010519801

The product you are viewing cross references to these numbers
93010513600/1
Product Information
Product Information
Intermediate shaft gear - Size 0

Fits:
Porsche 911 1970-89
Porsche 911 Turbo 1975-89
Porsche 965 Turbo 3.3L 1991-94
Porsche 914-6 1970-76

Matching intermediate shaft and crankcase SEE
Checking and installing intermediate shaft SEE

Fits to number 27 on diagram.

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

93010513600
313096410322
93010501301
93010501304
930105901X
93010501311
93010501314
930105901AX
313096410322

The product you are viewing cross references to these numbers
93010513600/2
Product Information
Product Information
Intermediate shaft gear - Size 1

Fits:
Porsche 911 1970-89
Porsche 911 Turbo 1975-89
Porsche 965 Turbo 3.3L 1991-94
Porsche 914-6 1970-76

Matching intermediate shaft and crankcase SEE
Checking and installing intermediate shaft SEE

Fits to number 27 on diagram.

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

93010513600
93010501301
93010501304
930105901X
93010501311
93010501314
930105901AX

The product you are viewing cross references to these numbers
Special Order item
PCG10510312
Product Information
Product Information
Intermediate shaft gear, Size -1.

porsche

Fits:
Porsche 356 1950-65
Porsche 912 1965-69

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

PCG10510312
61610510312
PCG10510312

The product you are viewing cross references to these numbers
PCG10510312/1
Product Information
Product Information
Intermediate shaft gear, Size -1.

Fits:
Porsche 356 1950-65
Porsche 912 1965-69

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

PCG10510312
61610510312
PCG10510312

The product you are viewing cross references to these numbers
PCG10510322/1
Product Information
Product Information
Porsche 912 356 Intermediate shaft gear, Size -2.

Fits:
Porsche 356 1950-65
Porsche 912 1965-69

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

PCG10510322
PCG10510322
PCG10510312

The product you are viewing cross references to these numbers
Special Order item
PCG10510332
Product Information
Product Information
Intermediate shaft gear, Size: (+1)

porsche

Fits:
Porsche 912 1965-69
Porsche 356 1950-65 all 

Click 'Zoom in' for large parts diagram,

Diagram ref no 2 

PCG10510332/1
Product Information
Product Information
Intermediate shaft gear, Size: (+1)

oematch

Fits:
Porsche 912 1965-69
Porsche 356 1950-65 all 

Click 'Zoom in' for large parts diagram,

Diagram ref no 2 



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

PCG10510332
PCG10510332
61610510332

The product you are viewing cross references to these numbers
Special Order item
PCG10510342
Product Information
Product Information
Intermediate shaft gear, Size: (+2)

porsche

Fits:
Porsche 912 1965-69
Porsche 356 1950-65 all 

Click 'Zoom in' for large parts diagram,

Diagram ref no 2 

DISPLAYING 1 to 16 (of 21 products)
1 2
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About IMS Ancillary Parts

Engine IMS Ancillary Parts – Precision Components for Reliable Porsche Performance

The Intermediate Shaft (IMS) plays a crucial role in Porsche’s flat-six engine design, connecting the crankshaft and camshafts to ensure precise timing and smooth operation. Supporting parts such as bearings, flanges, seals, tensioners, and housings are equally vital — working together to maintain lubrication, reduce friction, and prevent catastrophic engine failure.

At Design911, we offer a comprehensive range of precision-engineered IMS ancillary parts built for strength, accuracy, and long-term reliability. Designed to withstand high RPM loads and extreme temperatures, each component ensures the durability and performance Porsche engines are renowned for.

Whether you’re carrying out preventive maintenance, a full rebuild, or an IMS bearing upgrade, our manufacturer-quality components deliver dependable operation and peace of mind on every drive.

What Do IMS Ancillary Parts Do?

IMS ancillary components work together to keep the intermediate shaft properly aligned, lubricated, and balanced.

Core Functions:

  • Bearings and flanges support the shaft and maintain alignment between camshafts and crankshaft.
  • Seals and o-rings prevent oil leaks and protect internal components from contamination.
  • Tensioners and guides maintain correct timing chain tension, reducing wear.
  • Lubrication systems ensure consistent oil flow to critical moving parts.

A properly functioning IMS system ensures smoother timing, quieter operation, and extended engine life.

Why Do IMS Components Fail?

The IMS and its associated parts are subjected to constant stress, heat, and oil contamination. Over time, this leads to wear, bearing degradation, or seal failure — all of which can result in major engine damage if ignored.

Common Causes of Failure Include:

  • Bearing wear or corrosion, leading to timing misalignment.
  • Oil contamination, accelerating component fatigue.
  • Hardened or cracked seals, causing leaks.
  • Chain tension loss from worn guides or tensioners.
  • Lack of lubrication due to clogged oil passages or restricted flow.

Symptoms may include metallic noises, oil leaks, timing issues, or engine warning lights — all signs that the IMS or its ancillary parts need immediate attention.

Why Replace with Precision-Engineered IMS Ancillary Parts?

Upgrading or replacing IMS-related components with precision-engineered, high-durability replacements restores proper engine balance, lubrication, and reliability — essential for preventing costly failures.

Key Benefits:

  • Restores accurate camshaft and crankshaft timing.
  • Prevents bearing and shaft wear, reducing engine failure risk.
  • Improves lubrication and oil flow consistency.
  • Eliminates oil leaks and timing irregularities.
  • Constructed from corrosion-resistant, heat-treated materials.
  • Direct-fit design for modern and classic Porsche engines.

Replacing worn IMS ancillary parts during rebuilds or maintenance ensures your Porsche continues to deliver smooth, dependable performance for years to come.

Highlights:

  • High-quality IMS bearings, seals, flanges, and tensioners for Porsche engines.
  • Precision-engineered for strength, accuracy, and durability.
  • Enhances lubrication and reduces friction under load.
  • Protects against timing failure and oil contamination.
  • Ideal for rebuilds, upgrades, and preventative maintenance.
  • Compatible with a wide range of Porsche flat-six engines.

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