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OE MATCH
By OE Match
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356C 1963-65
JE Forged 86mm Piston Set
Upgrade or rebuild your classic Porsche engine with this OE
Match JE Forged 86mm Piston Set, designed for Porsche 356C and SC models from
1963–66 and Porsche 912 models from 1965 onwards with the 3-piece engine case.
Fits:
- Porsche 911 912 SWB (F)
- Porsche 356C 1963-65
Manufactured from JE 2618 forged aluminium, these performance pistons provide excellent strength and durability for demanding engine builds. They feature a 30° piston angle, zero offset and additional material beneath the piston crown for the valve pocket.
Designed for a 1600cc engine with a 74mm stroke, the pistons feature a .155 dome height and 9.5:1 compression ratio, making them ideal for compatible Porsche 356 and 912 engine rebuilds and performance applications.
Why Choose JE 2618 Forged Pistons?
JE forged pistons use 2618 aluminium alloy for excellent strength under demanding engine conditions. Forged construction makes them an excellent choice for performance upgrades and high-quality engine rebuilds.
Benefits include:
- JE 2618 forged aluminium construction
- High strength and durability
- 30° piston angle
- Zero piston offset
- Extra material beneath the crown for the valve pocket
- Suitable for performance and restoration engine builds
Key Specifications
- Piston diameter: 86mm
- Engine size: 1600cc
- Stroke: 74mm
- Pistons: JE 2618 forged
- Dome height: .155
- Compression ratio: 9.5:1
- Piston angle: 30°
- Zero offset
- Extra material under piston crown for valve pocket
Kit Includes
- 4 JE forged pistons
- Complete set of piston rings
- 4 wrist pins
- Wrist pin clips
Porsche 356C / SC & 912 Forged Pistons and Engine Rebuild Components
Correct piston specification is essential when rebuilding or upgrading a Porsche 356C, 356 SC or early Porsche 912 engine. Piston diameter, stroke, compression ratio and crown angle must be correctly matched to achieve dependable performance.
The OE Match 0081186JEP combines an 86mm piston diameter with JE 2618 forged construction, a 74mm stroke specification, 30° piston angle and 9.5:1 compression ratio, providing a strong solution for compatible classic Porsche engine builds.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0081186JEP
The product you are viewing cross references to these numbers
OEMatch Pistons — Durability, Sealing, Performance
OEMatch pistons for Porsche models are intended to restore compression and mechanical integrity during engine rebuilds and servicing. Selected to match original-spec dimensions where relevant, they help reduce oil consumption and maintain consistent combustion and predictable running characteristics across classic air-cooled and modern water-cooled Porsche engines.
Available Types
- Standard replacement pistons for routine overhaul
- High-compression and performance-shaped pistons where specified
- Complete piston kits including rings, pins and circlips
Understanding OEMatch Pistons
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original pistons.
OE (Original Equipment) refers to parts matching original specifications for the pistons and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM pistons engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Pistons convert combustion pressure into crankshaft motion, seal the combustion chamber and control oil consumption via ring fit and skirt geometry. In service or rebuild, inspection focuses on skirt condition, ring land wear, pin-bore condition and overall diameter to determine whether replacement is required.
Benefits Include
- Restores cylinder compression and engine responsiveness
- Helps reduce oil consumption and maintain combustion efficiency
- Supports consistent clearances for predictable running after rebuilds
Why Pistons Wear and Fail
- Scuffing and scoring from inadequate lubrication or contaminated oil
- Cracking or pitting due to detonation, overheating or metal fatigue
- Ring wear and carbon build-up that reduce sealing and increase oil use
The Importance of Replacing with OEMatch Pistons
Timely replacement of worn pistons is central to a successful Porsche engine overhaul. Correctly sized pistons restore compression and mitigate the risk of secondary damage to bores, rings and bearings. Choosing pistons that match specified clearances and material recommendations helps preserve engine longevity and ensures the rebuilt unit operates within the intended tolerances.
Advantages
- Precision machining to maintain consistent diameters and ring grooves
- Material choices such as heat-treated aluminium where specified for a balance of strength and thermal behaviour
- Available in standard and application-specific configurations to suit rebuild and restoration work
Support & Advice
Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
