Independent parts atlas sources attached
Porsche 993 · 993 103 915 53
This guide joins the factory catalogue reference to the exact products documented below. It does not certify interchangeability or provide manufacturing dimensions.
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.
1.716 kg
Applies to: Porsche 993 103 915 58 · genuine
Read the specification source · checked
The current Centre Porsche Roissy product page identifies 993 103 915 58 as the orderable supersession for 993 103 915 53 and publishes a 1.716 kg piece weight.
cylinder bore: 100 mm · piston length: 63.3 mm · compression height: 31.8 mm · piston-pin length: 54 mm · piston-pin diameter: 23 mm
Applies to: MAHLE 504 36 00 · oe supplier
Read the specification source · checked
The current indexed K Motorshop product record identifies MAHLE piston 504 36 00, cross-references Porsche 993 103 915 51, 52, 53 and 54, and publishes a 100.0 mm bore, 63.3 mm piston length, 31.8 mm compression height, 54.0 mm pin length and 23.0 mm pin diameter. A direct request returns HTTP 403; Kitesurf did not proceed because robots.txt was unavailable, and no challenge was bypassed.
Not published by the cited source
Applies to: FVD 99310391556SET · aftermarket alternative
Read the specification source · checked
The current indexed FVD record documents the complete M64.60 replacement set and its German manufacture but does not publish the piston alloy, cylinder alloy or running-surface material. Kitesurf receives a Cloudflare 403 challenge.
No exact material specification is published for the cited FVD matched set; country of manufacture is not treated as a material specification.
Check the VIN, variant, quantity and installation requirements before ordering. Availability is a dated observation, not a delivery guarantee.
993 103 915 58 · genuine
special order · reviewed
Page reached: HTTP 200
The current Centre Porsche Roissy page identifies Genuine Porsche 993 103 915 58 as the replacement for 993 103 915 53, reports special-order delivery in three to seven days and exposes Add to cart.
99310391556SET · aftermarket alternative
backorder · reviewed
Automated access restricted: HTTP 403
The current indexed direct product record offers FVD own-development reference 99310391556SET as a complete six-piston, six-cylinder, ring, pin and circlip replacement set made in Germany for the 3.6-litre 993 Turbo M64.60, reports availability soon in three to five working days and exposes Buy now. This is a whole-engine matched-set alternative, not permission to substitute one individual Porsche weight-group component. Kitesurf respected robots.txt but received a Cloudflare 403 challenge; no challenge was bypassed.
504 36 90The 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.
Manufacturer reference evidence · checked
504 36 00The 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.
Manufacturer reference evidence · checked
503 WR 44The 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.
Manufacturer reference evidence · checked
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.
Illustration 102-05 · catalogue page 50 · position 1.
The reference is transcribed from the catalogue. A listing alone does not establish every vehicle variant or installation condition.
Porsche Classic Genuine Parts Catalogue — 911 993, 1994–1998