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Piston set, Flat top 90x66mm. Porsche 914 ❭ VW9000T4FP
- Porsche 914 (1970-1976)
Restore engine performance or support a high-quality engine rebuild with this OE Match Flat Top Piston Set, 90 x 66mm. Produced to OE-style specifications, this precision-engineered piston set is designed for compatible classic Porsche applications using the same engine platform where applicable. Manufactured from high-strength aluminium alloy, these flat top pistons provide excellent durability, efficient heat transfer, and precise dimensional accuracy, ensuring reliable performance and long service life. They are ideal for standard engine rebuilds, performance upgrades, and concours-quality restoration projects.
Fits:
- Porsche 914 (1970-1976) (Type 4)
Engine size: 1700cc
Stroke: For 66mm stroke crankshafts
Pistons: Hypereutectic aluminium alloy
Compression Height: 42mm
Set includes: 4 pistons, 4 pins and a set of rings.
The piston set converts combustion pressure into mechanical force by transferring energy through the connecting rods to the crankshaft. The flat top piston design promotes efficient combustion while maintaining the intended compression characteristics for compatible engine configurations. Over time, pistons can suffer from wear, scuffing, cracked ring lands, excessive carbon build-up, or heat damage, resulting in reduced engine performance, increased oil consumption, and loss of compression. Replacing worn pistons restores engine efficiency, smooth operation, and dependable reliability.
What This Product Does:
- Converts combustion pressure into crankshaft rotation.
- Restores engine compression and combustion efficiency.
- Supports smooth piston movement within the cylinders.
- Provides reliable sealing when used with new piston rings.
- Improves engine performance and reduces oil consumption.
- Replaces worn, damaged, or heat-affected pistons.
- Provides an OE-style fit for straightforward engine rebuilding.
Symptoms Of Wear Or Failure:
- Low engine compression.
- Excessive oil consumption.
- Blue exhaust smoke caused by oil burning.
- Piston slap or knocking noises.
- Loss of engine power or performance.
- Damaged piston crowns or cracked ring lands.
- Excessive cylinder blow-by.
- Damage identified during engine overhaul.
Why Replacement Matters:
- The pistons are among the most heavily loaded components within the engine, converting combustion energy into usable mechanical power while maintaining compression and efficient combustion. Worn or damaged pistons can cause reduced engine performance, increased oil consumption, excessive blow-by, piston noise, and accelerated wear of other engine components.
- Replacing worn pistons with this OE Match Flat Top Piston Set restores engine compression, improves combustion efficiency, reduces oil consumption, and supports long-term engine reliability. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Flat Top Piston Set, 90 x 66mm provides reliable fit, performance, and durability for classic Porsche engine maintenance, repairs, performance upgrades, and restoration projects.
- Porsche 356 1950-55

It fits 356 Pre A Porsches 1948-55 with the early 2 piece Case.
The Cylinders are cast iron with Graphite Coated Hypereutectic pistons with valve pockets, and the 22mm Pin. This kit requires no machine work, when installing in a factory Porsche case & heads
It is also commonly used as a big bore supplement for the early 36 Horse VW Engine, but requires a lot of machine work.
Engine size: 1500cc
Stroke: 74mm
Cylinders: Cast Iron.
Pistons: Hypereutectic
Dome CC: 0
Piston Angle: Flat top
Kit includes:4 Cylinders, 4 Pistons, A set of Piston Rings, and 4 wrist pins and clips.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0081180S
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63

It fits Porsche 356; A and B, Super 90, 1955-63 with the 3 piece Case. The Cylinders are Cast Iron with Graphite Coated Hypereutectic pistons with the 22° Angle, valve pockets, and the 22mm Pin. This kit requires no machine work, when installing in factory Porsche case & heads.
Engine size: 1600cc
Stroke: 74mm
Cylinders: Cast Iron
Pistons: Hypereutectic
Dome CC: 17
Compression: 9.2:1
Piston Angle: 22°
Kit includes: 4 Cylinders, 4 Pistons, A set of Piston Rings, and 4 wrist pins and clips.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0081186PA
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63

It fits Porsche 356; A and B, Super 90, 1955-63 with the 3 piece Case. The Cylinders are Biral with Graphite Coated Hypereutectic pistons with the 22° Angle, valve pockets, and the 22mm Pin. This kit requires no machine work, when installing in factory Porsche case & heads.
Engine size: 1600cc
Stroke: 74mm
Cylinders: Biral
Pistons: Hypereutectic
Dome CC: 17
Compression: 9.2:1
Piston Angle: 22°
Kit includes: 4 Cylinders, 4 Pistons, A set of Piston Rings, and 4 wrist pins and clips.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0081186PE
The product you are viewing cross references to these numbers
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