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Connecting Rod

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DISPLAYING 1 to 7 (of 7 products)
PLASKIT
Product Information
Product Information
Bearing clearance gauge kit

plastigauge


Kit includes:
1 x Plastigauge PL-A box 
1 x Plastiguage Mineral grease 
1 x Plastiguage Silicone grease 

PLASTIGAUGE PL-A is widely used in the measurement of clearance in plain automotive bearings. Measurement of clearance in big-end bearings can be achieved without dismantling the crankshaft.

3G Minerak Grease: To coat journal prior to use of Plastigauge 
3G Silicone Grease: To apply to surface of shell





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Related, superseded, cross reference or alternative numbers for comparison.

PLASKIT
PLA007
PLA008

The product you are viewing cross references to these numbers
PLA007
Product Information
Product Information
Bearing clearance gauge pack
100 Plasigauge strips per box

plastigauge

PLASTIGAUGE PL-A is widely used in the measurement of clearance in plain automotive bearings. Measurement of clearance in big-end bearings can be achieved without dismantling the crankshaft.

For measurements of: 0.001″ to 0.007″ (0.025mm – 0.175mm)

Suitable for use at temperatures between 0°C and 35°C

Contents: 

  • 100 gauges (each 10cm in length)
  • Measurement reading cards (mm & inches)
  • Instructions
  • We highly recommend the use of Silicone and Mineral greases. 



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Related, superseded, cross reference or alternative numbers for comparison.

PLA007
PL-A

The product you are viewing cross references to these numbers
9A110391402
Product Information
Product Information
Connection con rods
SET OF 6

Fits:
Porsche 997 3.6L / 3.8L
Porsche 987 3.4L

CP-Carrillo connecting rods are fully machined from a proprietary 4330m alloy forging for strength and durability. Rods are available with 2 types of bolts: The standard WMC-H6 bolt with a UTS of 220ksi and our upgraded CARR-S6 bolt with a UTS of 285ksi. The CARR upgraded bolt is a good choice if planning on revving the engine higher than 8500rpm.

All our bolts are manufactured with asymmetrical threads, each thread has a slightly different design than the previous giving the bolts an evenly distributed thread engagement. This helps increasing the clamp load and fatigue life of the fasteners

Diagram Ref No 14.

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Related, superseded, cross reference or alternative numbers for comparison.

9A110391402
8944
8945
9A110391402

The product you are viewing cross references to these numbers
996103176CARR
Product Information
Product Information
Connection Rod Bolt 3/8 CARR Bolt 1.600UHL S6 or CARR6 Head Marking
Price is Each


Diagram ref no 10.
996103176WMC
Product Information
Product Information
Connection Rod Bolt 3/8 x 24 WMC Bolt 1.600UHL H6 or WMC6 Head Marking.
Price is Each


Diagram Ref No 10.
Special Order item
9A110311502
Product Information
Product Information
Connection Rod Bolt. M10 x 1.25 x 51
12 per engine. Price is for each.

Fits:
Porsche 997 MKII 2009>>
Porsche 987 Boxster MKII 2009>>
Porsche 987C Cayman MKII 2009>>

Click picture for large parts diagram.
Diagram Ref No 8.
PLA008
Product Information
Product Information
Silicone and mineral bearing grease.

plastigauge

3G Mineral Grease: To coat journal prior to use of Plastigauge 

3G Silicone Grease: To apply to surface of shell

Lubricants to assist with the measurement of clearance in automotive bearings.

Plastigauge Precision Clearance Gauges



DISPLAYING 1 to 7 (of 7 products)
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About Connecting Rod

High-Performance Connecting Rods (Con Rods) – Strength, Precision, and Balance for Porsche Engines

Connecting rods — commonly known as con rods — form the vital link between the piston and the crankshaft, converting linear motion into rotational force. In high-performance Porsche engines, con rods endure immense stress, heat, and pressure with every revolution, making their strength, balance, and precision crucial for reliability and performance.

At Design911, we offer a range of precision-engineered connecting rods designed for both classic and modern Porsche engines. Manufactured from motorsport-grade materials, these components deliver exceptional tensile strength, fatigue resistance, and dimensional accuracy — essential for high-RPM operation, rebuilds, and engine tuning projects.

What Do Connecting Rods Do?

Connecting rods are the mechanical bridge between pistons and the crankshaft, transmitting the force generated during combustion into the crank’s rotational motion.

Core Functions:

  • Convert reciprocating motion into rotation, enabling engine power output.
  • Withstand extreme pressure during every combustion cycle.
  • Maintain piston alignment and crankshaft balance at high speeds.
  • Influence engine response and rev characteristics, particularly in performance applications.

Lightweight yet durable connecting rods are critical to maintaining smooth, reliable power delivery across the RPM range.

Why Do Connecting Rods Fail?

Even with Porsche’s engineering precision, connecting rods can degrade or fail due to stress, wear, or improper lubrication — especially under performance driving conditions.

Common Causes of Failure Include:

  • Oil starvation leading to bearing failure or heat damage.
  • Over-revving or detonation causing bending or fatigue cracking.
  • Incorrect torque or clearance during rebuilds.
  • Material fatigue from age, stress, or high-mileage operation.
  • Improper lubrication causing friction wear on big-end bearings.

A failing con rod can result in catastrophic engine failure, making proactive inspection and replacement essential during rebuilds or upgrades.

Why Replace with Performance-Grade Connecting Rods?

Upgrading to high-strength connecting rods ensures your Porsche engine maintains optimal balance, durability, and performance under high stress. Whether restoring a classic flat-six or building a tuned turbocharged powerplant, precision rods provide improved reliability and smoother operation.

Key Benefits:

  • Increased strength and fatigue resistance under high-load conditions.
  • Enhanced engine response through reduced rotational mass.
  • Maintains piston-to-crank alignment for smoother operation.
  • Ideal for rebuilds, tuning, and performance upgrades.
  • Crafted from premium materials such as forged steel, billet alloy, or titanium.
  • Precision-balanced to reduce vibration and ensure even load distribution.

Motorsport-grade connecting rods deliver the perfect balance of strength and agility, ensuring your Porsche engine performs reliably — whether on the track or road.

Highlights:

  • High-performance con rods engineered for strength and endurance.
  • Manufacturer-quality fitment for seamless integration with Porsche engines.
  • Forged and billet designs available for both naturally aspirated and turbocharged models.
  • Lightweight, precision-balanced construction for maximum RPM stability.
  • Perfect for performance builds, rebuilds, and engine restorations.
  • Tested to motorsport standards for strength, fatigue, and dimensional accuracy.       

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