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Engine Valves / Guides / Springs
By OE Match
- Porsche 914 (1970-1976)
OE Match replacement kit designed for the cylinder heads of classic Porsche 911 S, T, T(U), and E engines. This set provides the correct quantity of exhaust valves required for a complete flat-six cylinder head rebuild.
SET OF 6 exhaust valves
Fits:
Porsche 911 S / TU /T / E - 1965 to 1969
Porsche 914-6 - 1970 to 1976
Diagram ref no 10
Exhaust valves control the release of combustion gases from each cylinder. By opening and closing in precise timing with the camshaft, they allow efficient evacuation of exhaust gases while maintaining proper compression when closed. Replacing all exhaust valves as a set ensures balanced engine performance across all cylinders.
Function: Each exhaust valve seals against the valve seat during combustion, then opens to allow exhaust gases to exit the cylinder. Because exhaust valves operate at significantly higher temperatures than intake valves, correct material quality and precise machining are essential for durability, sealing, and long-term reliability.
Exhaust valves are subject to extreme heat and wear. Over time they can burn, pit, or lose their ability to seal correctly, leading to compression loss, misfires, and reduced engine efficiency. Replacing all six exhaust valves during a rebuild ensures consistent combustion, reliable sealing, and protects newly machined valve seats from premature damage.
When to replace
Replace exhaust valves as a complete set when:
• Performing a full engine or cylinder head rebuild
• Leak-down or compression tests indicate valve sealing issues
• Burnt, pitted, or tuliped valves are found during inspection
• Valve stem wear exceeds specification
• Restoring or refreshing a classic 911 engine
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110540850
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)
Kit includes inlet valve x 6

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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110540700
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 914 (1970-1976)
This is a set of four OE Match exhaust valve guides engineered to replace the worn or original guides in the Porsche 914 air-cooled engine. This is a first-oversize exhaust guide intended to fit cylinder heads that may have experienced wear or require an oversize fit during an engine rebuild. Supplied as a complete set of 4, this kit is ideal for a full cylinder head rebuild or valve job.
SET OF 4
Fits:
Porsche 914-1,7/1,8V
Porsche 914-1,8
Diagram ref no 15
Exhaust valve guides serve several key functions in the overhead valve train:
• Support and align the exhaust valve stems, ensuring they travel straight within the head.
• Maintain correct clearances between the valve stem and guide for proper sealing and combustion efficiency.
• Help transfer heat away from the hot exhaust valve stem into the cylinder head casting.
• Protect valve stems and seats from wear due to excessive lateral movement.
This set of four valve guides ensures that all exhaust valves on the 914’s four-cylinder engine have correct, matched guidance for dependable operation.
This OE Match set matches Porsche factory dimensions and is ideal for full head rebuilds, valve seat replacements or anytime guides show wear.
Function
• Valve Alignment: Keeps the exhaust valve traveling straight for proper valve seat engagement and sealing.
• Wear Control: Reduces lateral valve stem movement that would otherwise accelerate wear on the valve and seat.
• Heat Dissipation: Helps carry heat from the hot exhaust valve stem into the cylinder head.
• Rebuild Support: Oversize fit for cylinder heads that have been reamed or show wear.
Valve guides wear over time due to high heat, friction, and repeated motion. Worn guides can result in:
• Excessive oil entering the combustion chamber
• Poor compression, rough idle or power loss
• Increased valve stem wear Higher oil consumption and visible exhaust smoke
Installing a correct OE Match valve guide restores proper valve stem alignment, improves sealing and performance, and supports a longer engine life especially crucial during a rebuild or head service.
Replace the exhaust valve guide if you notice:
• Blue smoke indicating oil burning
• Low compression in exhaust valve tests
• Rough running or poor idle quality
• Worn valve stems or seats seen during teardown
• During head rebuild or valve seat work
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
021101417A
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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 914 (1970-1976)
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.

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
Related, superseded, cross reference or alternative numbers for comparison.
93010432100
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)
The exhaust valve opens and closes in time with the camshaft to release burnt gases after combustion. A correctly sealing valve helps maintain compression, stable idle, clean running, and consistent performance.
Sold each, 6 required per vehicle.
Fits:
Porsche 911 S/TU/T/E 1965 - 1969
Porsche 914-6 1970 - 1976
Diagram ref no 10
This valve forms a gas-tight seal against the valve seat to contain combustion pressure, then opens to allow exhaust flow out of the cylinder. Because exhaust valves operate under high heat, correct material quality and precise machining are critical for longevity and reliable sealing
A worn, pitted, or burnt exhaust valve can cause compression loss, misfires, poor performance, and potentially lead to costly cylinder head damage if ignored. Replacing valves during a rebuild helps restore correct sealing and reliable operation under heat load.
When to replace:
• Low compression / leak-down points to valve sealing issues
• Burnt valve symptoms (misfire, rough idle, power loss)
• Visible pitting, tuliping, or seat damage during teardown
• Excessive valve stem wear found during head inspection
• During cylinder head overhaul or full engine rebuild
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110540850
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)

Fits:
Porsche 911 L >>1968
Click 'Zoom in' for Large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110540550
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)

Fits:
Porsche 911 L >>1968
Click 'Zoom in' for Large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110540104
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)
Maintain the performance and reliability of your classic Porsche engine with this OE Match cylinder head intake valve. Designed to precisely replicate the original Porsche specification, this valve ensures proper airflow, sealing, and combustion efficiency in early air-cooled engines.
Fits:
Porsche 911 S/TU/T/E 1965 - 1969
Porsche 914-6 1970 - 1976
Diagram ref no 9.
Manufactured from high-grade, heat-resistant steel alloy, it delivers outstanding strength, thermal stability, and wear resistance — essential for the demanding environment of Porsche’s horizontally-opposed engines. Each valve is precision-ground for perfect seat contact, ensuring smooth intake flow, consistent compression, and long-term durability.
Function:
The intake valve allows the precise entry of the air-fuel mixture into the combustion chamber. Properly sealing valves are critical for maintaining compression, fuel efficiency, and smooth idle. A high-quality OE Match valve ensures exact timing, optimal airflow, and factory-level performance across the rev range.
Why & When Replacement Matters
Why:
Continuous exposure to heat, carbon build up, and mechanical stress can cause valve face wear, pitting, or bending, leading to loss of compression, rough running, and reduced power.
When:
- During engine rebuilds or top-end overhauls
- When compression loss or poor idle is detected
- If valves show visible wear, burn marks, or stem play
- As part of routine maintenance for high-mileage or performance engines
Replacing with an OE Match intake valve restores engine efficiency, reliability, and preserves the authentic performance character of your classic Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110540700
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)

Fits:
Porsche 914-4 1.7L
Click 'Zoom in' for large parts diagram.
Diagram Ref No 17.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
022109612D
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
Outlet, 1. Oversize.

Fits:
Porsche 914-2.0
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
039101421
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)
This OE Match exhaust valve guide is a precision-engineered replacement valve guide specifically designed for the Porsche 914 (1970–1976) air-cooled engines. This is a first-oversize exhaust guide intended to fit cylinder heads that may have experienced wear or require an oversize fit during an engine rebuild.
Sold individually, 4 required per engine.
Fits:
Porsche 914-1,7/1,8V
Porsche 914-1,8
Diagram ref no 15
This exhaust valve guide ensures that the exhaust valve stem remains centered and aligned as it moves, reducing lateral movement and minimizing wear on both the valve stem and seat. By guiding the valve smoothly and maintaining proper clearances, it helps preserve engine compression, reduces oil consumption, and contributes to efficient exhaust flow and combustion stability. Valve guides also aid in conducting heat away from the valve stem into the cylinder head, helping protect components from excessive thermal stress.
Valve guides are typically sold individually; a complete head rebuild will normally require four exhaust valve guides (one for each exhaust valve).
Function
• Valve Alignment: Keeps the exhaust valve traveling straight for proper valve seat engagement and sealing.
• Wear Control: Reduces lateral valve stem movement that would otherwise accelerate wear on the valve and seat.
• Heat Dissipation: Helps carry heat from the hot exhaust valve stem into the cylinder head.
• Rebuild Support: Oversize fit for cylinder heads that have been reamed or show wear.
Valve guides wear over time due to high heat, friction, and repeated motion. Worn guides can result in:
• Excessive oil entering the combustion chamber
• Poor compression, rough idle or power loss
• Increased valve stem wear Higher oil consumption and visible exhaust smoke
Installing a correct OE Match valve guide restores proper valve stem alignment, improves sealing and performance, and supports a longer engine life especially crucial during a rebuild or head service.
Replace the exhaust valve guide if you notice:
• Blue smoke indicating oil burning
• Low compression in exhaust valve tests
• Rough running or poor idle quality
• Worn valve stems or seats seen during teardown
• During head rebuild or valve seat work
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
021101417A
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)

Fits:
Porsche 914 1969 - 1976
Click 'Zoom in' for large parts diagram.
Diagram ref no 20
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
113109651A
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)

Fits:
Porsche 914-2,0
M GB0 010 050>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
039101403
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 914 (1970-1976)
Sold each - 12 per car

Fits:
Porsche 911 - 1965 to 1989
Porsche 911 turbo - 1975 to 1989
Porsche 964 - 1989 to 1994
Porsche 914/6 - 1970 to 1976
Click 'Zoom in' for large parts diagram.
Diagram ref no 14
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110542104
The product you are viewing cross references to these numbers
OEMatch Engine Valves / Guides / Springs — Durability, Sealing, Performance
OEMatch supplies a selection of engine valves, valve guides and valve springs for Porsche models. These cylinder head components control air intake, exhaust flow and valve timing. Installing correct parts helps restore compression, reduce oil consumption and maintain consistent combustion across classic air-cooled flat-sixes and modern water-cooled engines.
Available Types
- Inlet (intake) valves
- Exhaust valves
- Valve guides
- Valve springs and retainers
- Valve seats and shims
Understanding OEMatch Engine Valves / Guides / Springs
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original engine valves / guides / springs.
OE (Original Equipment) refers to parts matching original specifications for the engine valves / guides / springs and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM engine valves / guides / springs engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Valves, guides and springs together control airflow into and out of the combustion chamber, maintain valve alignment and close valves with the correct force. Worn or incorrectly matched components affect sealing, timing and engine smoothness; correct selection is important for reliable operation and long-term durability. OEMatch catalogues a wide range of Porsche items, with several thousand part numbers and extensive cross-references to support rebuilds and restorations.
Benefits Include
- Restores correct airflow and combustion sealing for improved compression
- Reduces oil consumption and exhaust smoke by renewing worn guides and seals
- Eliminates valve float and restores high-RPM stability with appropriate spring rates
Why Engine Valves / Guides / Springs Wear and Fail
- Valve seat wear or pitting that reduces sealing and compression
- Burnt or bent valves from overheating or incorrect timing
- Worn valve guides causing increased clearance, oil consumption and smoke
- Fatigued or weakened valve springs leading to valve float at high engine speeds
- Corrosion and carbon build-up from poor fuel quality or many short trips
The Importance of Replacing with OEMatch Engine Valves / Guides / Springs
Timely replacement of valves, guides and springs preserves engine compression, throttle response and fuel efficiency. Renewing these components during a head rebuild or scheduled overhaul prevents secondary damage to pistons and seats, helps maintain emissions performance and keeps the engine running smoothly under load. Choosing parts selected for Porsche applications supports correct clearances, spring rates and material properties needed across different model years and engine types.
Advantages
- Direct-fit alternatives engineered to match original dimensions and tolerances where applicable
- Options suitable for restorations, routine overhauls and performance maintenance
- Components chosen for heat resistance and fatigue life to suit Porsche cylinder head conditions