IMS Ancillary Parts

Fits:
Porsche 986/987 Boxster 1997-2009
Porsche 996/997 1997-2009
Our team of technicians has developed a Rear Main Seal that corrects the notorious rear main oil leaks on the m96 and m97 engines. It has been developed to solve the twisting of the last journal of the crank shaft, reducing engine vibration and extending engine life. Prevent engine failure, by replacing your factory rear main seal with our upgraded rear main bearing seal and housing.
Features:
• prevents crank warping
• decreases engine vibrations
• prevents piston rod #6 failure
• extends engine life
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
996986REAREPS
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

Fits:
Porsche 986 Boxster 2.7L 2001>>2004
Porsche 986 Boxster S 3.2L 2001>>2004
Porsche 987.1 Boxster 2.7L MKI 2005>>2008
Porsche 987.1 Boxster S 3.2L MKI 2005
Porsche 987.1 Boxster S 3.4L MKI 2006>>2008
Porsche 987.1 Cayman 2.7L MKI 2005>>2008
Porsche 987.1 Cayman S 3.4L MKI 2006>>2008
Porsche 996 Carrera 3.4L 2001
Porsche 996 Carrera 4 3.4L 2001
Porsche 996 Carrera 3.6L 2002>>2004
Porsche 996 Carrera 4 3.6L 2002>>2004
Porsche 996 Carrera 4S 3.6L 2002>>2005
Porsche 996 Targa 3.6L 2002>>2005
Porsche 997.1 Carrera 3.6L MKI 2005>>2008
Porsche 997.1 Carrera S 3.8L MKI 2005>>2008
Porsche 997.1 Carrera 4 3.6L MKI 2006>>2008
Porsche 997.1 Carrera 4S 3.8L MKI 2006>>2008
Porsche 997.1 Targa 4 3.6L MKI 2007>>2008
Porsche 997.1 Targa 4S 3.8L MKI 2007>>2008
NOTE: For The 2001 Model Year, Porsche Replaced The Intermediate Shaft's Roller-Type (Duplex) Chain With A Tooth-Type Chain. This Listing Is For The Later Tooth-Type Chain And Is Not Compatible With Earlier Engines Equipped With The Roller-Type Chain.
While Unlikely, It's Possible That An Earlier Engine May Have Been Rebuilt And Upgraded To Use The Newer Chain Design. For This Reason, Design 911 Strongly Recommends Confirming Which Type Of Chain Your Engine Uses Before Placing An Order. To Assist With Identification, Our Product Images Include A Helpful Comparison Between The Roller-Type (Duplex) Chain And The Tooth-Type Chain.
Diagram Ref No 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610517158
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Fits:
Porsche 986 Boxster 2.7L 2001-04
Porsche 986 Boxster S 3.2L 2001-04
Porsche 987-1 Boxster 2.7L 2005-08
Porsche 987-1 Boxster S 3.2L 2005
Porsche 987-1 Boxster S 3.4L 2006-08
Porsche 987-1 Cayman 2.7L 2005-08
Porsche 987-1 Cayman S 3.4L 2006-08
Porsche 996-1 Carrera 3.4L 2001
Porsche 996-1 Carrera 4 3.4L 2001
Porsche 996-2 Carrera 3.6L 2002-04
Porsche 996-2 Carrera 4 3.6L 2002-04
Porsche 996-2 Carrera 4S 3.6L 2002-05
Porsche 996-2 Targa 3.6L 2002-05
Porsche 997-1 Carrera 3.6L 2005-08
Porsche 997-1 Carrera S 3.8L 2005-08
Porsche 997-1 Carrera 4 3.6L 2006-08
Porsche 997-1 Carrera 4S 3.8L 2006-08
Porsche 997-1 Targa 4 3.6L 2007-08
Porsche 997-1 Targa 4S 3.8L 2007-08
NOTE: For the 2001 model year, Porsche replaced the intermediate shaft's roller-type (duplex) chain with a tooth-type chain. This listing is for the later tooth-type chain and is not compatible with earlier engines equipped with the roller-type chain.
While unlikely, it's possible that an earlier engine may have been rebuilt and upgraded to use the newer chain design. For this reason, Design 911 strongly recommends confirming which type of chain your engine uses before placing an order. To assist with identification, our product images include a helpful comparison between the roller-type (duplex) chain and the tooth-type chain.
Diagram ref. 17.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610517158
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
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.