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Porsche > 911 & 912 (1965-1989) > Engine Rebuild Parts >

Engine Valves / Guides / Springs

Engine Valves / Guides / Springs

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DISPLAYING 1 to 16 (of 67 products)
1 2 3 4 >>
Cylinder head exhaust valve kit. Porsche 911 S / TU / T / E - 90110540850
3
Cylinder head exhaust valve kit. Porsche 911 S / TU / T / E
90110540850/1KIT
Product Information
Product Information
Cylinder head exhaust valve kit. 
Kit includes exhaust valve x 6

oematch

Fits:

Porsche 911 S / TU /T / E - 1965 to 1969
Porsche 914-6 - 1970 to 1976

Click 'Zoom in' for Large parts diagram
Diagram ref no 10



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Related, superseded, cross reference or alternative numbers for comparison.

90110540850
90110540850

The product you are viewing cross references to these numbers
Cylinder head inlet valve kit. Porsche 911 S / TU / T /E - 90110540700
4
Cylinder head inlet valve kit. Porsche 911 S / TU / T /E
90110540700/1KIT
Product Information
Product Information
Cylinder head inlet valve kit. 
Kit includes inlet valve x 6

oematch

Fits:

Porsche 911 S / TU /T / E - 1965 to 1969
Porsche 914-6 - 1970 to 1976

Click 'Zoom in' for Large parts diagram
Diagram ref no 9.



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90110540700
90110540700

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Engine cylinder head exhaust valve kit TRW. Porsche 911 1970-77 - 91110541500, 91110541550, 1041.239, 3064, 13388
3
Engine cylinder head exhaust valve kit TRW. Porsche 911 1970-77
91110541550/3KIT
Product Information
Product Information
Engine cylinder head exhaust valve kit - TRW. 
Kit contains TRW exhaust valve x 6

trw

Fits:
Porsche 911 T / E / S 2.2ltr - 1970 to 1971
Porsche 911 T / E / S 2.4ltr - 1972 to 1973
Porsche 911 / S 2.7ltr - 1974 to 1977
Porsche 911 2.7 Carrera - 1974 to 1976

Diameter - 40mm



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91110541550
91110541500
91110541550
1041.239
3064
13388

The product you are viewing cross references to these numbers
Engine cylinder head exhaust valve kit. Porsche 356 / 912 1.6ltr - 61610540650, 3398.239, 61610540601, 864408-4
3
Engine cylinder head exhaust valve kit. Porsche 356 / 912 1.6ltr
61610540650/1KIT
Product Information
Product Information
Engine cylinder head exhaust valve kit. 
Kit contains exhaust valve x 4

oematch

Fits:

Porsche 356 Cabriolet / Speedster, A 1600 S 616.15
Porsche 356 Cabriolet / Speedster, A 1600 S 616.15
Porsche 356 Cabriolet / Speedster, B 1600 Super 75 616.15
Porsche 356 Cabriolet / Speedster, B 1600 Super 75 616.15
Porsche 356 Cabriolet / Speedster, C 1600 616.15
Porsche 356 Cabriolet / Speedster, C 1600 616.15
Porsche 356 Coupe, A 1600 Super 616.15
Porsche 356 Coupe, A 1600 Super 616.15
Porsche 356 Coupe, B 1600 Super 75 616.15
Porsche 356 Coupe, B 1600 Super 75 616.15
Porsche 356 Coupe, C 1600 616.15
Porsche 356 Coupe, C 1600 616.15
Porsche 356 Coupe, C 1600 SC 616/16
Porsche 356 Coupe, C 1600 SC 616/16
Porsche 912, 1.6ltr 616.40/616.39/616.36
Porsche 912, 1.6ltr 616.40/616.39/616.36

Click 'Zoom in' for large parts diagram.
Diagram ref no 11



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Related, superseded, cross reference or alternative numbers for comparison.

61610540650
61610540650
3398.239
61610540601
864408-4

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Engine cylinder head exhaust valve kit. Porsche 911 1970 - 77 - 91110541500, 91110541550
5
Engine cylinder head exhaust valve kit. Porsche 911 1970 - 77
91110541550/2KIT
Product Information
Product Information

Engine cylinder head exhaust valve kit - OE Match
Diameter - 40mm
Kit contains TRW exhaust valve x 6

Fits:
Porsche 911 T / E / S 2.2ltr - 1970 to 1971
Porsche 911 T / E / S 2.4ltr - 1972 to 1973
Porsche 911 / S 2.7ltr - 1974 to 1977
Porsche 911 2.7 Carrera - 1974 to 1976



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91110541550
91110541500
91110541550

The product you are viewing cross references to these numbers
Engine cylinder head exhaust valve kit. Porsche 911 1978-89 - 93010541908, 93010541915, 93010541951
5
Engine cylinder head exhaust valve kit. Porsche 911 1978-89
93010541951/1KIT
Product Information
Product Information

Engine cylinder head exhaust valve kit.
Kit includes exhaust valve x 6

oematch

Fits:
Porsche Carrera 3.0ltr - 1976 to 1977 
Porsche 911 SC 3.0ltr - 1978 to 1983 
Porsche 911 3.2 Carrera 1984 to 1989 

Diameter - 41.5mm

Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.




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93010541951
93010541908
93010541915
93010541951

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Engine cylinder head inlet valve kit. Porsche 356 / 912 1.6ltr - 61610540200
3
Engine cylinder head inlet valve kit. Porsche 356 / 912 1.6ltr
61610540200/1KIT
Product Information
Product Information
Engine cylinder head inlet valve kit. 
Kit includes inlet vale x 4

oematch


Fits:
Porsche 356 Cabriolet / Speedster, A 1600 S 616.15
Porsche 356 Cabriolet / Speedster, B 1600 Super 75 616.15
Porsche 356 Cabriolet / Speedster, C 1600 616.15
Porsche 356 Coupe, A 1600 Super 616.15
Porsche 356 Coupe, B 1600 Super 75 616.15
Porsche 356 Coupe, C 1600 616.15
Porsche 356 Coupe, C 1600 SC 616/16
Porsche 912 Targa, 1.6ltr  616.40/616.39/616.36
Porsche 912, 1.6ltr 616.40/616.39/616.36

Click 'Zoom in' for large parts diagram.
Diagram ref no 10



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61610540200
61610540200

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Engine cylinder head inlet valve kit. Porsche 911 3.0ltr / 3.2ltr 1974 - 1989 - 93010540913, 93010540901, 93010540900
3
Engine cylinder head inlet valve kit. Porsche 911 3.0ltr / 3.2ltr 1974 - 1989
93010540901/1KIT
Product Information
Product Information

Engine cylinder head inlet valve kit.
Kit includes inlet valve x 6

oematch

Fits:
Porsche Carrera 3.0ltr - 1976 to 1977 
Porsche 911 SC 3.0ltr - 1978 to 1983 
Porsche 911 3.2 Carrera - 1983 to 1989

93010540900
93010540901
93010540913

Valve head diameter 49,00 mm
Valve stem diameter 9,00 mm
Length 110,10 mm
Valve seat angle 45 °

Click 'Zoom in' for large parts diagram.
Diagram Ref No 9.



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93010540901
93010540913
93010540901
93010540900

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Engine cylinder head inlet valve kit. Porsche 911 S 1969 - 90110541100
3
Engine cylinder head inlet valve kit. Porsche 911 S 1969
90110541100/1KIT
Product Information
Product Information

Engine cylinder head inlet valve kit. 
Kit includes inlet valve kit x 6

oematch

Fits:
Porsche 911 S - 1969

Click 'Zoom in' for large parts diagram.
Diagram ref no 9



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90110541100
90110541100

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Engine Cylinder head inlet valve kit. Porsche 930 / 964 - 93010540913, 93010540901, 93010540900
3
Engine Cylinder head inlet valve kit. Porsche 930 / 964
93010540901/1::1KIT
Product Information
Product Information

Engine Cylinder head inlet valve kit. 
Kit includes inlet valve x 6

oematch

Fits:
Porsche 964 C2/C4 3.6L 1990-94
Porsche 911 3.3L Turbo 1978-89

911 (964), 3.3 Turbo M 30.69
911 (964), 3.3 Turbo S M 30.69S
911 (964), 3.6 Carrera M 64.01/M 64.02
911 (964), 3.6 Carrera M 64.01/M 64.02
911 (964), 3.6 Carrera 4 M 64.01
911 (964), 3.6 Carrera RS M 64.03
911 (964), 3.6 Turbo M 64.50
911 Cabriolet (964), 3.6 Carrera M 64.01/M 64.02
911 Cabriolet (964), 3.6 Carrera M 64.01/M 64.02
911 Cabriolet (964), 3.6 Carrera 4 M 64.01
911 Speedster (964), 3.6 Carrera M 64.01/M 64.02
911 Speedster (964), 3.6 Carrera M 64.01/M 64.02
911 Targa (964), 3.6 Carrera M 64.01/M 64.02
911 Targa (964), 3.6 Carrera M 64.01/M 64.02
911 Targa (964), 3.6 Carrera 4 M 64.01

Valve head diameter 9,00 mm
Valve stem diameter 9,00 mm
Valve shaft length 110,10 mm
Valve seat angle 45 °

Click 'Zoom in' for large parts diagram.
Diagram Ref No 11.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

93010540901
93010540913
93010540901
93010540900

The product you are viewing cross references to these numbers
Engine cylinder head inlet valve TRW. Porsche 911 1970-77 - 91110541120, 911.105.411.20, 1013.002, 91110541100 - V94266
3
Engine cylinder head inlet valve TRW. Porsche 911 1970-77
91110541120/3KIT
Product Information
Product Information

Engine cylinder head inlet valve kit - TRW
Kit contains TRW inlet valve x 6

trw

Fits:
Porsche 911 T / E / S 2.2ltr - 1970 to 1971
Porsche 911 T / E / S 2.4ltr - 1972 to 1973
Porsche 911 2.7 Carrera MFI - 1973 to 1976
Porsche 911 / S 2.7ltr CIS - 1974 to 1977

Diameter - 46mm



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91110541120
91110541120
911.105.411.20
1013.002
91110541100

The product you are viewing cross references to these numbers
Engine cylinder head inlet valve. Porsche 911 1970-77 - 91110541120, 911.105.411.20, 1013.002, 91110541100, 854409-6 - V94266
5
Engine cylinder head inlet valve. Porsche 911 1970-77
91110541120/2KIT
Product Information
Product Information

Engine cylinder head inlet valve kit.
Kit contains inlet valve x 6

oematch

Fits:
Porsche 911 T / E / S 2.2ltr - 1970 to 1971
Porsche 911 T / E / S 2.4ltr - 1972 to 1973
Porsche 911 2.7 Carrera MFI - 1973 to 1976
Porsche 911 / S 2.7ltr CIS - 1974 to 1977

Diameter - 46mm



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Related, superseded, cross reference or alternative numbers for comparison.

91110541120
91110541120
911.105.411.20
1013.002
91110541100
854409-6

The product you are viewing cross references to these numbers
High performance valve spring, seat and retainer kit 9mm. Porsche 911 / 964 - 90110590150, 90110590151, 90110546300, 90110546303, 90110542103, 90110542104, 90110552102
6
High performance valve spring, seat and retainer kit 9mm. Porsche 911 / 964
HP109HSSKIT
Product Information
Product Information
High performance valve spring, seat and retainer kit 9mm. 

aasco

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Kit includes
High performance valve spring x 12
High performance valve spring seat x 12
High performance 9mm titanium valve spring retainer disc x 12



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

HP109HSSKIT
90110590150
90110590151
90110546300
90110546303
90110542103
90110542104
90110552102

The product you are viewing cross references to these numbers
Valve guide exhaust / inlet standard size. SET OF 12 Porsche 911 1965-89 OE Ref: 93010432100 - 93010432100
4
Valve guide exhaust / inlet standard size. SET OF 12 Porsche 911 1965-89 OE Ref: 93010432100
93010432100/1KIT
Product Information
Product Information

SET OF 12 valve guides - standard. Inlet x 6 and exhaust x 6.

This is the standard valve guide used in early air-cooled Porsche 911/930 cylinder heads. It’s a plain (non-hydraulic) guide that locates the valve stem in the head; when worn it causes oil burning, loss of compression and poor valve seating — so they’re commonly replaced whenever heads are rebuilt.

What the part is (technical data / dimensions)

Application: Porsche 911 / 930 from about 1965–1989 (varies slightly by model and year; early cars both intake & exhaust, later years sometimes exhaust only). Standard size (typical OE): ID ≈ 9.00 mm, OD ≈ 13.06 mm, length ≈ 51.2 mm.        

oematch

Fits: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 CarreraPorsche 911 1978-1983 3.0L / SCPorsche 911 1984-1986 3.2LPorsche 911 1987-1989 3.2L G50Porsche 911 1975-1977 3.0L Turbo (930)Porsche 911 1978-1989 3.3L Turbo (930)

Why these guides should be replaced

Valve guides are a wearing item. Replace them when any of the following occur or when you rebuild the engine head.Excessive valve stem play — worn guide ID internal diameter lets the valve rock and misalign with the seat , poor sealing, reduced compression and power.Oil consumption / smoking — worn guides allow oil to wick down the stem into the combustion chamber, causing blue/grey smoke and fouled plugs.Hard starting, rough idle, misfire — poor sealing / valve timing irregularities from misaligned valves.Valve wobble that leads to premature valve stem wear or valve seat damage — once stems or seats are damaged you need deeper surgery.If a guide is cracked, broken, or has excessive ovality — must be replaced.Whenever you remove and refinish seats / replace springs / do a full head rebuild — replacing guides at that time is cheap insurance and ensures correct alignment. 

Inner diameter 9,00 mm
Outer diameter 13,06 mm
Total Length 51,20 mm

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2 and 2A.



Related reference numbers
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93010432100
93010432100

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Valve spring engine set. Porsche 911 / 964 (90110590151) - 90110590151, 90110590150, 90110590100, 93010590100
3
Valve spring engine set. Porsche 911 / 964 (90110590151)
SPRINGKIT01
Product Information
Product Information
Valve spring engine set.
Complete engine valve spring set - inner and outer springs

oematch

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994

Valve springs endure significant thermal stress, which can cause them to lose tension over time. A broken spring can lead to severe engine damage, therefore, it's crucial to inspect and replace the springs as needed during an engine overhaul. The intake and exhaust valves use identical springs, consisting of an inner and outer spring pair for each valve. Alongside these, we offer a comprehensive selection of engine repair components, including valve stem seals and valve guides.

Click 'Zoom in' for large parts diagram.
Diagram ref no 13



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SPRINGKIT01
90110590151
90110590150
90110590100
93010590100

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Valve spring kit. Porsche 356 / 912 - 61610543203, 61610543200, 61610543201, 61610543202, 61610543204, 61610543205, 61610543206 - 616 105 432 03
4
Valve spring kit. Porsche 356 / 912
61610543203/1KIT
Product Information
Product Information
Valve spring kit. 

Kit includes valve spring x 8

Fits:
Porsche 356B / 356C - 1960 to 1965
Porsche 912 - 1966 to 1969

Diagram ref no 14



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61610543203
61610543203
61610543200
61610543201
61610543202
61610543204
61610543205
61610543206

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DISPLAYING 1 to 16 (of 67 products)
1 2 3 4 >>
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About Engine Valves / Guides / Springs

Engine Valves, Valve Guides & Valve Springs – Precision, Performance & Reliability for Porsche Engines

The valves, guides, and springs form the heart of your Porsche’s cylinder head, precisely managing airflow and combustion efficiency. Intake (inlet) valves allow the correct air-fuel mixture into the combustion chamber, while exhaust valves release spent gases. Working together with guides and springs, they ensure perfect timing, compression, and power delivery.

At Design911, we offer a comprehensive range of precision-engineered inlet and exhaust valves, valve guides, and valve springs designed for performance, durability, and exact fitment across Porsche models. Each component is manufactured from heat-resistant, high-grade steel or titanium, ensuring reliable operation under extreme conditions.

Whether rebuilding a classic air-cooled flat-six or maintaining a modern turbocharged engine, our high-quality valve components deliver the precision, strength, and sealing performance your Porsche demands.

What Do Valves, Guides & Springs Do?

These components work in harmony to control the critical air and exhaust flow that determines your engine’s power, efficiency, and longevity.

Core Functions:

  • Inlet Valves: Regulate air-fuel intake into the combustion chamber.
  • Exhaust Valves: Release burnt gases efficiently during the exhaust stroke.
  • Valve Guides: Maintain valve alignment and prevent side wear.
  • Valve Springs: Control valve movement, ensuring precise timing and closing pressure.

Together, they keep your Porsche engine breathing freely, running smoothly, and performing as designed — lap after lap, mile after mile.

Why Do Valves, Guides & Springs Fail?

Valves and related components endure extreme heat, pressure, and friction. Over time, these conditions can lead to wear, deformation, or loss of tension, affecting airflow, compression, and overall engine performance.

Common Causes of Failure Include:

  • Valve seat wear or pitting, leading to compression loss.
  • Burnt or bent valves caused by overheating or timing issues.
  • Worn valve guides, increasing oil consumption and exhaust smoke.
  • Weak or fatigued valve springs, resulting in valve float at high RPMs.
  • Corrosion and carbon build-up from poor fuel quality or short trips.

When these issues develop, symptoms may include misfires, poor performance, oil burning, or rough idling — clear indicators that replacement or overhaul is required.

Why Replace with Precision-Engineered Valve Components?

Replacing worn valves, guides, and springs ensures your Porsche engine maintains proper compression, valve timing, and airflow — all essential to reliable power delivery and fuel efficiency.

Key Benefits:

  • Restores correct airflow and combustion efficiency.
  • Improves engine compression and throttle response.
  • Prevents oil leakage and smoke caused by worn guides.
  • Eliminates valve float and restores high-RPM stability.
  • Crafted from premium heat-resistant alloys for durability and longevity.
  • Perfect fitment across classic and modern Porsche engines.

Precision-engineered components bring your engine back to its optimal condition, preserving both performance and refinement.

Highlights:

  • Comprehensive range of inlet and exhaust valves, valve guides, and springs.
  • Precision-manufactured from high-tensile, heat-treated materials.
  • Restores compression, power, and valve timing accuracy.
  • Improves reliability and reduces wear in high-performance engines.
  • Designed for rebuilds, restorations, and performance upgrades.
  • Compatible with air-cooled and water-cooled Porsche models.

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