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Engine cylinder heads Porsche 993 3.6L Carrera 210 kW (280 hp) M64.21 / M64.22 (Reconditioned) ❭ 99310403506
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Engine cylinder heads Porsche 993 3.6L Carrera 210 kW (280 hp) M64.21 / M64.22 (Reconditioned)
SET OF 6
Fits:
Porsche 993 3.6L Carrera 210 kW (280 hp) M64.21 / M64.22
Please note: Reconditioned units are sold on an exchange basis, A surcharge will be held and then refunded when the old one is returned.
Please note good reconditioned cylinder heads are becoming very hard for us to supply and this is simply because the core exchange units are not being returned to us. If you fail to return the core unit to us within 30 days we reserve the right to refuse the surcharge refund.
- The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
- Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
- Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
- All surcharges and exchanges are subject to our terms and conditions.
PLEASE NOTE:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310403506
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 914 (1970-1976)

Fits:
Porsche 911 1965-89 (incl. Turbo)
Porsche 914 1970-76
Porsche 964 1989-94
Porsche 993 1995-98
Click 'Zoom in' for large parts diagram
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010519600
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976

This is a brand new, ready to install replacement VW Type 4 cylinder head for Porsche 914 and 912E 2.0L models. These 100% new 2.0L 914 cylinder head castings come fitted with provision for breather and include stainless steel 42mm intake and stainless steel 36mm exhaust valves. Heads feature hardened keepers, chromoly retainers, and single high rev valve springs. These cylinder heads accept standard 94mm or 96mm cylinders but can be opened to accept 100-105mm machine-in big bore cylinders.
Sold as each; quantity two (2) required per engine.
Engine: Porsche 914 2.0L
Year: 1970-1976
Springs: Single High Rev Valve Springs
Valves: 42mm Intake by 36mm Exhaust (Stainless; 8mm Valve Stems)
Casting: AA 2.0L 914 3-Stud/3-Bolt
Plug Size: 14mm (Replacement Bosch Number is W8CC or NGK is B5ES)
Port: Round Cylinder Head Chamber
Volume: 60cc
Bore: STD 2.0L
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
039101351E
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 914 (1970-1976)
This OE Match washer for the cylinder head nut is a replacement engine fastening washer for Porsche 911 models from 1965 to 1977 and Porsche 914-6 models. It is designed to match the original-style fitment and support correct cylinder head nut clamping.
Sold individually
Fits:
Porsche 911 1965 - 1977
Porsche 930 Turbo 1975 - 1977
Porsche 914-6
Diagram ref no 17
The washer sits beneath the cylinder head nut and helps distribute the clamping load evenly across the mounting surface. This supports correct fastening of the cylinder head assembly and helps protect the mating surfaces from damage during tightening.
Functions
• Fits beneath the cylinder head nut
• Helps distribute cylinder head nut clamping force
• Supports correct cylinder head fastening
• Helps protect the mounting surface from nut damage
• Replaces worn, missing, corroded, or damaged original washers
• Suitable for engine rebuilds, cylinder head work, and top-end servicing
• OE Match replacement for classic Porsche engine repair.
Why Replace This Part?
Cylinder head nut washers can become worn, distorted, corroded, marked, or damaged during removal and refitting. Reusing damaged washers can affect clamping consistency or damage the mounting face. Replacing the washer during cylinder head service or engine rebuild helps ensure the fastener seats correctly and supports reliable engine assembly.
When to Replace This Part
• The cylinder head nuts have been removed
• The original washer is missing, worn, corroded, or distorted
• The washer face is marked, damaged, or no longer flat
• Cylinder head work or top-end engine service is being carried out
• The engine is being rebuilt or restored
• Correct fastening hardware is required for an OE-style rebuild
• Preventative replacement is being carried out during engine assembly.
Where it fits on the car
This washer fits in the engine cylinder head fastening assembly, positioned beneath the cylinder head nut on Porsche 911 and 914-6 models.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99903108302
The product you are viewing cross references to these numbers
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