This guide joins the factory catalogue reference to the exact products documented below. It does not certify interchangeability or provide manufacturing dimensions.
Weight, dimensions and material
Each specification below names the exact product it describes. Alternative-part values are not measurements of the Genuine Porsche part. Missing properties are not estimated.
The current direct MS Road Race page identifies exact Porsche reference 993 103 915 51 and publishes a 100 mm bore, 31.5 mm piston compression height, 23 x 53.6 mm piston pin, 481 g piston weight and 119 g pin weight. It does not publish the complete cylinder-and-piston assembly weight or material.
The exact-reference page publishes separate piston and pin weights but no complete cylinder-with-piston assembly weight; those component values are not presented as the assembly weight.
Dimensions
cylinder bore: 100 mm · piston compression height: 31.5 mm · piston-pin length: 53.6 mm · piston-pin diameter: 23 mm
The current direct MS Road Race page identifies exact Porsche reference 993 103 915 51 and publishes a 100 mm bore, 31.5 mm piston compression height, 23 x 53.6 mm piston pin, 481 g piston weight and 119 g pin weight. It does not publish the complete cylinder-and-piston assembly weight or material.
The current direct MS Road Race page identifies exact Porsche reference 993 103 915 51 and publishes a 100 mm bore, 31.5 mm piston compression height, 23 x 53.6 mm piston pin, 481 g piston weight and 119 g pin weight. It does not publish the complete cylinder-and-piston assembly weight or material.
The exact-reference product record does not publish the piston alloy, cylinder alloy or running-surface material.
Where to buy
Check the VIN, variant, quantity and installation requirements before ordering. Availability is a dated observation, not a delivery guarantee.
The current direct product page identifies a new Genuine Porsche MAHLE 993 Turbo piston-and-cylinder set under exact Porsche reference 993 103 915 51, reports it in stock and exposes an order action.
The current Kitesurf-rendered direct product page offers an immediately available six-piece MAHLE piston-and-cylinder set for the 408 PS 993 Turbo, exposes Add to cart and explicitly cross-references Porsche 993 103 915 51 and 54 together with their 56 and 59 revisions.
Original-equipment manufacturer
MAHLE 504 36 90
The direct MS Road Race record describes the exact 993 Turbo piston-and-cylinder application as a new Genuine Porsche MAHLE product, while the current component records identify MAHLE repair kit 504 36 90. This establishes the named supplier family, not proof that one weight-group component can replace another.
The current indexed K Motorshop record names MAHLE piston 504 36 00 and cross-references the four Porsche Turbo weight-group references 993 103 915 51 through 54. This is component-reference evidence, not a historical Porsche supply-contract claim.
The current direct MHTeile record names MAHLE cylinder 503 WR 44 for the 993 Turbo M64.60 and publishes its Nikasil running surface. This is component-reference evidence for the Turbo family, not proof that individual weight groups may be mixed.
The PET variants represent different weight groups and model-year revisions. Porsche supersessions and the MAHLE cross-reference family must not be treated as permission to mix individual pistons or cylinders: confirm engine M64.60, model year, piston/cylinder weight group, compression ratio, required quantity and all workshop measurements with a professional engine builder before ordering or installation.
Where this reference appears in the PET
Illustration 102-05 · catalogue page 49 · position 1.
The reference is transcribed from the catalogue. A listing alone does not establish every vehicle variant or installation condition.