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Porsche // 992 (911) MK1 2019-2024 // 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
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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
OE Match set of 12 big end bearing shells in standard size engineered to replace the original connecting rod bearings used on Porsche Boxster 986 / 987 and 911 996 / 997 and 987 Cayman platforms
Set of 12 Bearing Shells
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2006 - 2008
Porsche 996 1997 - 2005
Porsche 997 2005 - 2008
Diagram ref no 12.
Each bearing shell is produced with smooth, low-friction bearing surfaces and consistent wall thickness to maintain correct rod-to-crankshaft clearances when installed in the rod big end. The standard size designation indicates these bearings retain factory bore dimensions, ideal for engines where no crankshaft undersize machining has been performed.
Big end bearing shells provide the low-friction interface between the connecting rod and crankshaft journal. They help to support dynamic engine loads and maintain a stable lubricating oil film that protects both the rod and crankshaft from metal-to‐metal contact. With proper oil flow and clearance, these bearings help ensure reliable rotation and reduce wear under normal and high-load conditions.
Installed in pairs inside each connecting rod’s big end bore, these bearing shells support the rotating crankshaft by maintaining correct clearance and offering a durable, smooth surface for the journal to ride on. Their design promotes even oil distribution and stable hydrodynamic lubrication - essential for wear resistance, smooth engine operation, and long service life.
Big end bearings are central to engine bottom-end integrity. They endure high loads, RPMs, and constant motion. Over time or due to lubrication issues, bearings can wear, lose material, or show surface degradation - leading to increased clearances, knocking noises, reduced oil pressure, and accelerated wear of the crankshaft journal. Replacing worn bearings with OE Match shells during a rebuild restores proper oil clearances and hydrodynamic lubrication, helping protect the crankshaft and rod journals from premature wear while supporting smooth, reliable engine operation.
When to replace:
• Engine is undergoing rebuild or overhaul
• Bearing wear, noise, or rod knock detected
• After lubrication or oil starvation incident
• During high-mile preventive maintenance
• When crankshaft journals are within standard size (no undersize needed)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610312162
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100 Plasigauge strips per box
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:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PLA007
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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
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PLASKIT
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This kit is comprised of the following items:
LIQUI MOLY LM 48 Spray Paste – 300ml
LIQUI MOLY LM 48 Spray Paste is a heavy-duty assembly and maintenance lubricant designed to reduce friction, prevent wear and protect metal components against corrosion.
Its molybdenum disulphide-based formulation provides excellent adhesion, even on smooth surfaces, making it particularly useful when assembling bearings, bushes, pins and sliding components.
What Does It Do?
LM 48 Spray Paste forms a strongly adhering lubricating film on metal surfaces, helping prevent direct metal-to-metal contact.
It is particularly useful for protecting components during assembly and initial operation, reducing the risk of scoring, seizing and premature wear.
Why Is It Important?
Bearings, bushes, pins and sliding components can experience high pressure and friction during installation and operation.
Insufficient lubrication may cause:
- Metal-to-metal contact Scoring and surface damage
- Seized components Increased mechanical wear
- Corrosion during service
LM 48 provides a protective lubricating layer to help minimise these problems.
When Should It Be Used?
Use during the assembly, repair or maintenance of suitable
metal components, particularly:
- Bearing and bush installation
- Press-fitting pins and bearing bushes
- Assembly of plain bearing rings
- Lubrication of sliding guides
- Basic lubrication of joints and small mechanical components
Do not apply to brake friction surfaces, belts or components requiring a specified alternative lubricant.
Application Instructions
- Clean the surfaces before application.
- Shake the aerosol thoroughly.
- Spray a thin, even coating onto the required surfaces.
- Avoid excessive application.
- After use, invert the can and spray briefly to clear the nozzle.
Key Features
- Contains molybdenum disulphide, graphite and other solid lubricants
- Excellent adhesion to metal surfaces
- Reduces friction and mechanical wear
- Helps prevent scoring and seizing
- Provides corrosion protection
- Suitable for heavy-duty assembly applications
- Emergency-running lubrication properties
- Operating temperature range -35°C to +450°C
LIQUI MOLY Assembly Lubricants & Maintenance Sprays for Porsche
Correct lubrication during component assembly helps prevent premature wear, corrosion and damage to precision metal surfaces.
LIQUI MOLY LM 48 Spray Paste is suitable for a wide range of appropriate Porsche workshop applications, including bearing installation, suspension component assembly and lubrication of metal sliding surfaces.
Its high-pressure lubricating properties make it particularly useful during classic Porsche restoration and routine mechanical maintenance.