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Oversize cylinder head gasket 100mm bore. Porsche 928 S2 and 928 S4 ❭ C578
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Porsche 928 S2 and 928 S4
MLS (Multi Layer Steel) version
Price is for each, 1 x LHS and 1 x RHS required per car

Fits
Porsche 4.7ltr 928 S2
Porsche 5.0ltr 928 S4
Porsche 5.4ltr GTS
Engine Codes
M28.41 - 928 S4 5.0ltr /235KW
M28.42 - 928 S4 5.0ltr /235KW
M28.43 - 928 S 4.7ltr /215KW
M28.44 - 928 S 4.7ltr /215KW
M28.45 - 928 S 4.7ltr /215KW
M28.46 - 928 S 4.7ltr /212KW
M28.47 - 928 GT 5.0ltr /243KW
M28.49 - 928 GTS 5.4ltr /257 KW
M28.50 - 928 GTS 5.4ltr /257 KW
Please check Bore Size and Thickness before ordering
Material: MLS (Multi Layer Steel)
Compressed Thickness: .027 inch to 0.098 inch
Bore Shape: Round
Bore Size (MM): 100
Number of layers: 3 to 5
Orientation: Choose Left (1-4) or Right (5-8)
Gaskets are produced to order
Estimated Delivery Time: 5-6 Weeks
MLS Gaskets
The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface
finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
C578
The product you are viewing cross references to these numbers

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
703141410
The product you are viewing cross references to these numbers
Typical Applications
Hylomar Gasket 3400 can be used as a gasketing compound between machined surfaces. It is ideal for sealing between mating faces on engines and transmission components where resistance to temperature and vibration are essential.
INSTRUCTIONS FOR USE
Hylomar Gasket 3400 should be applied to clean and dry surfaces, free of contamination such as oil or grease. The compound may be dispensed by hand from cartridge, concertina pack, or via a screen printing system. Once applied the joint should be assembled as soon as practical. Any excess compound can be easily wiped off external surfaces with a clean cloth soaked in Acetone or other suitable solvents.
Typical Physical Properties:
UNCURED PRODUCT
Composition: Methyl-Methacrylate
Colour: Yellow
Viscosity @ 25°C / Brookfield Spindle 6 @ 2.5rpm: 100,000cps
Specific Gravity @ 25°C: 1.10 g/ml
Solvent Content: None
Specific Gravity g/ml @ 25°C: 1.04
Flash Point: >100°C
Shelf Life: 1 Year @ 4° to 25°C
CURED PRODUCT
Handling Time: 40 minutes
Functional Cure Time: 4 – 6 hours
Full Cure Time : 24 – 72 hours
Shear Strength : 1.5 N/mm²
Mild Steel/Mild Steel BS 5350 Part C5
Aluminium/Aluminium BS 5350 Part C5
Temperature Range: -40° to 150°C
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed