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- 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
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
A must when rebuilding any 1997-2008 M96 or M97 engine to prevent costly rod bolt failures.
SET OF 12

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI 2005-08
Porsche 987C Cayman MKI 2005-08
Porsche 996 Carrera 1998-05
Porsche 997 Carrera 2005-08
Click 'Zoom in' for large parts diagram.
Diagram ref no 11.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710311501
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 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- 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
SET OF 24 head studs, washers & nuts.

Fits:
Porsche 986 Boxster 2.7L / S 3.4L 2003-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2 / C4 / C4S 2002-05
Porsche 997 Carrera 2005-08
Click 'Zoom in' for large parts diagram
Diagram ref no 20.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610418059
The product you are viewing cross references to these numbers
Porsche Connecting Rods & Performance Bolts - High-Strength Engine Internals
Connecting Rods and Performance Bolts are critical engine internals responsible for transferring combustion forces from the pistons to the crankshaft while maintaining precise engine geometry under extreme load. In high-performance, tuned, or high-mileage Porsche engines, upgraded rods and bolts provide the strength and reliability required to safely handle increased power and RPM.
Available from Design911, this category includes high-strength Porsche connecting rods and performance-grade rod bolts engineered for demanding engine builds, rebuilds, and motorsport applications.
What Do Rods & Bolts Do?
Rods and bolts form the structural link between the piston and crankshaft, enduring immense forces every engine cycle.
Core Functions:
- Transfer combustion energy to the crankshaft.
- Maintain correct piston motion and alignment.
- Withstand tensile and compressive forces at high RPM.
- Secure the rotating assembly under extreme load.
- Support reliable operation in performance engines.
High-quality rods and bolts are essential for engine durability and safety.
Why Do Rods & Bolts Fail?
Standard factory rods and fasteners are designed for
original power levels and daily driving. Failures can occur due to:
- Increased cylinder pressure from tuning or forced induction.
- High RPM stretching standard rod bolts.
- Metal fatigue from heat cycling and age.
- Detonation causing shock loads through the rotating assembly.
- Reuse of torque-to-yield bolts during rebuilds.
Rod or bolt failure often results in catastrophic engine damage, including broken blocks or crankshaft failure.
Why Upgrade Rods & Bolts?
Upgraded rods and performance bolts are designed to exceed the limits of factory components.
Upgrade Benefits:
- Stronger forged steel or billet rod construction.
- High-tensile performance bolts for improved clamping force.
- Increased safety margin for high-output engines.
- Improved reliability for track, race, and tuned applications.
- Essential upgrade during engine rebuilds.
Upgrading rods and bolts protects the bottom end and enables safe power increases.
Highlights
- High-strength Porsche connecting rods and performance bolts
- Designed for tuned and motorsport engines
- Improved resistance to stretching and fatigue
- Ideal for engine rebuilds and power upgrades
- Proven reliability in high-load applications