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PMO

About PMO

PMO for Porsche

PMO induction components are a popular choice for classic Porsche models, especially where owners are upgrading carburettors or rebuilding air-cooled engines for improved response and drivability.

A Quick Look at PMO

PMO information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.

Choosing the Right Fit for Your Porsche

Where PMO is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.

Typical reasons for choosing these parts include upgrading tired or worn original carburettor/induction setups, improving drivability, and supporting engine builds with better throttle response and tunability.
Common symptoms that lead owners to carburettor work include hard starting, flat spots, poor idle quality, fuel smells, and inconsistent running, often linked to jetting, air leaks, or ignition issues.
Before chasing carburettor problems, many specialists recommend confirming ignition timing, valve clearances, and checking for vacuum leaks, as these often cause “carb-like” symptoms.
Carburettors and tuning components benefit from periodic checks, especially after engine changes, significant temperature/altitude shifts, or storage, to ensure jetting and synchronisation remain appropriate.
For engine rebuild decisions, compression and leak-down tests, bore inspection, and oil/filter analysis are key checks before committing to a full strip-down.
After any major tuning or carburettor change, final setup on a healthy engine (no vacuum or ignition faults) is important for stable idle and drivability.

Browse by Category

If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.

Engine Rebuild Parts — Engine rebuild parts are typically renewed during a planned rebuild or when symptoms point to internal wear, such as loss of compression, excessive oil consumption, persistent leaks, abnormal noises, or contamination found in the oil. On Porsche engines, many specialists replace chains, guides, bearings, seals, fasteners, and gaskets while the engine is apart to avoid repeat strip-downs and to restore long-term reliability.

Confirm engine health first with compression/leak-down tests, bore inspection, and oil/filter checks before deciding on the rebuild scope.
Plan to replace hard-to-access wear items “while you are in there” to make the most of the labour already invested.

Carburetors & Parts — Carburettor parts are usually replaced when a Porsche engine shows poor starting, flat spots, fuel leaks, inconsistent idle, or when carbs are being refurbished after long storage. Seals harden, jets clog, floats can stick, and throttle shafts wear over time. Refurbishing or rebuilding classic Porsche carburettors helps restore correct fuelling, prevent leaks, and bring back clean throttle response and drivability.

Many carburettors can be successfully rebuilt if the bodies are sound; replacement tends to depend on overall condition and performance goals.
After fitting or rebuilding carbs, synchronisation, mixture setting, and correct fuel pressure/regulation are essential for smooth running.

PMO Carburetors — PMO carburettors are a common upgrade for classic Porsche performance builds where owners want a modern carb solution with strong parts support and tuning flexibility. They are often chosen when original carburettors are worn beyond economical repair, when an engine build needs greater fuelling capacity, or when a particular driving feel and throttle response is desired. Correct setup, including jetting, synchronisation, and linkage adjustment, is critical to getting the best from PMO systems.

New PMO carburettors typically need jetting and synchronisation tailored to the specific engine specification rather than being treated as simple bolt-on parts.
Most issues reported with carburettors, including PMO units, can be traced to incorrect jetting, air leaks, or poorly set-up linkages rather than the hardware itself.

Engine Tuning — Engine tuning components are used to improve drivability, fuel economy, throttle response, or to support hardware changes such as induction, exhaust, camshafts, or forced induction upgrades. On Porsche engines, tuning is also used to smooth out flat spots and poor cold or hot behaviour, but it cannot compensate for underlying mechanical problems, so engine condition checks are important before calibration changes.

Before any tuning work, check compression and leak-down, fuelling system health, sensor data, and confirm there are no boost or vacuum leaks.
A conservative, well-matched calibration combined with appropriate supporting hardware generally offers better long-term reliability than aggressive settings on a marginal engine.

Air Filters — Air filters are replaced or upgraded to maintain correct airflow and protect the engine from dirt ingestion. On Porsche models, a clogged or degraded filter can slightly reduce performance and fuel economy, while a poorly sealing element can allow dust into the intake, accelerating wear. Performance filters are often chosen to support tuning work and to maintain stable sensor readings in higher-flow setups.

Service intervals depend on use and environment; cars driven in dusty conditions or on track may need more frequent inspection and cleaning/replacement.
Where oiled filters are used, follow the manufacturer’s oiling instructions carefully to avoid contaminating air-mass sensors.

Explore PMO at Design911

View the current PMO range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

PMO accelerator pump cam for Induction carburettor rebuild kit. Porsche 911

PM-O142-0

Product Information

PMO Accelerator Pump Cam - sold each
The PMO Accelerator Pump Cam is a precision-engineered replacement part designed for Porsche carburettor setups. It regulates the stroke of the accelerator pump, controlling the extra burst of fuel delivered during throttle application. A properly functioning cam ensures crisp throttle response, smooth acceleration, and optimal fuel delivery.

Fits:
PMO Induction 40mm / 46mm / 50mm Carburettors

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 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 993 (911) C2 1994-97
Porsche 993 (911) C4 1994-97
Porsche 993 (911) C2S 1994-97
Porsche 993 (911) C4S 1994-97

Please see the PMO vs OE Carb Overview

What the Product Does

Controls the operation of the carburettor’s accelerator pump.
Ensures the right amount of fuel is delivered during throttle transitions.
Improves throttle response and driveability.
Essential for maintaining proper carburettors tuning and performance.

Symptoms of a Worn or Failing Accelerator Pump Cam

Flat spots or hesitation when accelerating.
Poor throttle response.
Engine stumbles or bogs under sudden throttle input.
Inconsistent carburettor tuning, requiring frequent adjustments.

Common Reasons for Failure

Wear & Tear: Repeated contact and movement cause gradual wear.
Aging Material: Plastic or metal fatigue reduces precision over time.
Improper Adjustment: Incorrect setup can stress or damage the cam.
Contamination: Dirt or debris in the carburettor accelerates wear.

Why Replace?

Restores smooth throttle response and consistent acceleration.
Improves engine performance and driveability.
Prevents poor fuel delivery that can damage engine components.
Keeps carburetted Porsche engines properly tuned and responsive.

Ideal For: Porsche enthusiasts and restorers running PMO carburetors who want reliable, precise fuel delivery and smooth throttle performance.

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

PM-O142-0

PM-O700-1

PM-O700-0

PM-O700-2

The product you are viewing cross references to these numbers

6 6 6 6 6 6

Intake manifold stack set in aluminium. Porsche 993 3.6ltr

99311071250/5

Product Information

Intake manifold stack set.
Sold as a set of 6

Fits:

Porsche 993 Carrera 2 - 1994 to 1995
Porsche 993 Carrera 4 - 1994 to 1995

PMO Induction have designed an intake manifold “stack” in 356A aluminum, die-cast and machined specifically for your 3.6ltr Porsche 993 from 1994 to 1995.

Replace your cracked, warped or damaged plastic stacks with a permanent solution impervious to engine compartment heat cycles. Solid Works CAD designed and CNC machined for a perfect, long-lasting fit. Anodized black with a machined bore for improved flow characteristics.

Includes 6 x base gaskets to complete the installation.
Compatible with forced induction applications and high boost environments.
PMO Induction logo laser etched into the manifold base (not visible when installed for a clean, period correct look).

Diagram ref no 12 and 13

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

99311071250

99311071250

The product you are viewing cross references to these numbers

6 6 6 6 6 6

Intake manifold stack set in aluminium. Porsche 964 3.6ltr

96411071101/5

Product Information

Intake manifold stack set.
Sold as a set of 6

Fits:

Porsche 964 Carrera 2 - 1990 to 1994
Porsche 964 Carrera 4 - 1989 to 1994

PMO Induction have designed an intake manifold “stack” in 356A aluminum, die-cast and machined specifically for your 3.6ltr Porsche 964 from 1990 to 1994.

Replace your cracked, warped or damaged plastic stacks with a permanent solution impervious to engine compartment heat cycles. Solid Works CAD designed and CNC machined for a perfect, long-lasting fit. Anodized black with a machined bore for improved flow characteristics.

Includes 6 x base gaskets to complete the installation.
Compatible with forced induction applications and high boost environments.
PMO Induction logo laser etched into the manifold base (not visible when installed for a clean, period correct look).

Diagram ref no 9 and 10

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

96411071101

96411071101

The product you are viewing cross references to these numbers

6 6 6 6 6 6

Crankshaft pulley titanium 134mm. Porsche 911 SC 1978-83

93010202808/1

Product Information

Crankshaft pulley titanium 134mm.

Fits:
Porsche 911 / 911S / Carrera 3.0ltr - 1974 to 1977

Titanium is an Aerospace Material That Has the Highest Strength to Weight Ratio of any Structural Metal.
It has Been Used by Porsche Racing for Decades in Applications Where High Strength combined with the Lowest Weight is Required.
PMO Parts has Chosen to Produce a Limited Run of Motorsports Inspired Stock Configuration V-belt Crankshaft Pulleys for Your Engine Honoring This Rich Heritage.

Featuring:

3D Scanned & CAD Designed Using Genuine Sample Steel Parts
CNC Machined in Aerospace Grade Titanium Ensuring High Strength and Precision
Timing Marks @ Z1, 5⁰, 30⁰, 35⁰ BTDC

FE Marking is Suitable for MFI Pump Timing Applications, 120⁰ ( Z2 & Z3 ) Valve Timing Adjustment Marks also Included

Porsche Motorsports Hole Pattern Mimics Original Racing Parts
Reduces Rotating Mass and Engine Weight
Includes Proprietary Titanium Mounting Bolt Featuring Thread Locking Compound
Torque to 56 ft lbs (dry)

Diagram ref no 14

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

93010202808

93010202809

93010202804

93010202808

The product you are viewing cross references to these numbers

3 3 3

Heater block off plate left. Porsche 911 / 964

PM-O502-0

Product Information

Heater block off plate - Left

pmo

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

When eliminating the heater there is a gap between the fan ring and the engine block.
PMO has created a unique piece that helps cooling while tidying up the engine compartment

Fuel pressure control unit with AN-6 hose fittings. Porsche 911

PM-O404-0

Product Information

Fuel pressure control unit with AN-6 hose fittings.

pmo

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Fuel Pressure Control Unit, AN-6 Hose Fittings

A PMO exclusive, this pressure control unit eliminates the need to change fuel pumps when converting MFI and CIS Injected Systems and indicates the fuel pressure the system is running at. The unit is connected to the feed and return circuits and the fuel pressure is controlled by restricting the flow back to the tank. The flow back to the tank is controlled by the adjustable pressure valve.

This unit is preset with a running pressure of 3.0 to 4.0lbs of fuel pressure

Vapour block kit for water shield air cleaners. Porsche 911

PM-O301-0

Product Information

Vapour block kit for water shield air cleaners.

pmo

Fits:
Porsche 911 - 1965 to 1989

Mounted Inline between the engine oil tank and the evaporative unit, the PMO Vapor Block Kit is used to limit the amount of oil vapor that enters the induction system when using Water Shield Air Cleaners.

Fuel pressure control unit with barbed hose fittings. Porsche 911

PM-O403-0

Product Information

Fuel pressure control unit with barbed hose fittings.

pmo

Fits:
Porsche 911 - 1965 to 1989

Fuel Pressure Control Unit, Barbed Hose Fittings

This unit is preset with a running pressure of 3.0 to 4.0lbs of fuel pressure

6 6 6 6 6 6

Velocity stack 46mm. Porsche 911 1965-76

91111032201

Product Information

Velocity stack - 46mm bore diameter.
Sold each - 6 required per car

pmo

Fits:
Porsche 911 - 1965 to 1973
Porsche 911 2.7 Carrera MFI - 1974 to 1976

Enhance the engine compartment of your Classic Porsche with a high-quality reproduction of a long-discontinued Porsche part.
Designed using SolidWorks CAD and precisely molded for a perfect fit with a period correct look
HDPE construction with reinforced mounting tabs

These velocity stacks will fit the following applications:
3 barrel Weber and Zenith Carburetors
Porsche Mechanical Fuel Injection Throttle Bodies

Will not fit PMO Induction Carburetors or EFI Systems

Measures 2” Tall with a 46mm Bore

Sold Individually, Order (6) and Make Your Engine Look Like New

Click 'Zoom in' for large parts diagram.
Diagram ref no 30

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

91111032201

PCG10832201

91110832201

90110093301

The product you are viewing cross references to these numbers

6 6 6 6 6 6

Velocity stack 42mm. Porsche 911 1965-76

91111032203

Product Information

Velocity stack - 42mm bore diameter.
Sold each - 6 required per car

Fits:
Porsche 911S - 1970 to 1973

These velocity stacks will fit the following applications:
3 barrel Weber and Zenith Carburetors
Porsche Mechanical Fuel Injection Throttle Bodies

Will not fit PMO Induction Carburetors or EFI Systems

Measures 2” Tall with a 42mm Bore

Sold Individually, Order (6) and Make Your Engine Look Like New

Diagram ref no 30

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

91111032203

PCG10832201

91110832201

90110093301

The product you are viewing cross references to these numbers

6 6 6 6 6 6

Velocity stack 38mm. Porsche 911 1965-76

91111032202

Product Information

Velocity stack - 38mm bore diameter.
Sold each - 6 required per car

pmo

Fits:
Porsche 911 - 1965 to 1969
Porsche 911 E Sportomatic - 1970 to 1973

These velocity stacks will fit the following applications:
3 barrel Weber and Zenith Carburetors
Porsche Mechanical Fuel Injection Throttle Bodies

Will not fit PMO Induction Carburetors or EFI Systems

Measures 2” Tall with a 38mm Bore

Sold Individually, Order (6) and Make Your Engine Look Like New

Click 'Zoom in' for large parts diagram.
Diagram ref no 30

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

91111032202

PCG10832201

91110832201

90110093301

91110832202

The product you are viewing cross references to these numbers

3 3 3

Gasket set for Weber 40 series 3 barrel carburettor. Porsche 911 / 914-6

PCG10894800/2

Product Information

Gasket set for Weber 40 series 3 barrel carburettor.
Set includes gaskets and seals for 2 carburettors

pmo

Fits:
Porsche 911 - 1965 to 1971) ONLY with Weber 40 carburettor
Porsche 914/6 (1970 - 1972)

Included in Set
-Carburetor Base Gaskets
-Top Cover Gasket
-Air Filter Base Gasket
-Fuel Inlet Fittings Fiber Washers
-Idle Jet Holder O-Rings
-Main Jet Holder Copper Washers
-Float Bowl Plug Copper Washers
-Float Fulcrum Pin Copper Washers
-Accelerator Pump Jet Copper Washers
-Accelerator Pump Diaphragms (Inner and Outer

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

PCG10894800

PCG10894800

90110894800

90110094600

90110094900

90110821800

90110839801

90110093700

90110063701

90110839800

The product you are viewing cross references to these numbers

6 6 6 6 6 6

Crankshaft pulley titanium 131mm. Porsche 911 1974-77

91110201704/1

Product Information

Crankshaft pulley titanium 131mm.

pmo

Fits:
Porsche 911 / 911S / Carrera 3.0ltr - 1974 to 1977

3D Scanned & CAD Designed Using Genuine Sample Steel Parts
CNC Machined in Aerospace Grade Titanium Ensuring High Strength and Precision
Timing Marks @ Z1, 5⁰, 30⁰, 35⁰ BTDC

FE Marking is Suitable for MFI Pump Timing Applications, 120⁰ ( Z2 & Z3 ) Valve Timing Adjustment Marks also Included

Porsche Motorsports Hole Pattern Mimics Original Racing Parts
Reduces Rotating Mass and Engine Weight
Includes Proprietary Titanium Mounting Bolt Featuring Thread Locking Compound
Torque to 56 ft lbs (dry)

Click 'Zoom in' for large parts diagram.
Diagram ref no 14

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

91110201704

91110201704

The product you are viewing cross references to these numbers

7 7 7 7 7 7 7

Cylinder head set Super Vee 2.0ltr. Porsche 912E / 914

039101351E/1

Product Information

Cylinder head set Super Vee 2.0ltr.
Sold as a pair

Fits:
Porsche 912E - 1976
Porsche 914 - 1970 to 1976

High-Performance Cylinder Heads are an EMPI Tradition and the New Super Vee Type 4 Cylinder Heads Continue the EMPI Legacy of Quality, Speed and Innovation.
Starting with high quality European sourced castings, EMPI’s engineers went to work in EMPI’s state of the art machine shop in Anaheim, CA and fitted these Type 4 heads with Manley valves, bronze silicon valve guides, hardened valve seats, heavy duty valve springs and retainers.

All of the valve seat work is performed on our Rottler SG7MTS cylinder head machine.

Whether you’re rebuilding your VW or Hot Rodding your Porsche, you can be assured that these cylinder heads will deliver the performance you’ve been looking for.

EMPI Super Vee Stock Cylinder Heads Feature:

EMPI Exclusive European sourced castings
Manley valves – 42mm intake / 36mm exhaust
Bronze silicon valve guides
Hardened valve seats
Heavy duty single valve springs – Made in the USA with Japanese steel

Please Note:
Super Vee Heads Require a 94-96mm Bore

Also fits
VW Type 411/412
( May Require Minor Modification to Engine Tin )

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

039101351E

022101351C

PCG101351CX

021101351S

PCG101351SX

39101351E

039101061HX

021101353B

022101061CX

022101353B

022101061DX

The product you are viewing cross references to these numbers

Float level gauge for three barrel carburetor. Porsche 911 / 964 / 993

PM-O405-0

Product Information

Float level gauge for three barrel carburetor. Porsche 911 / 964 / 993

The PMO Float Level Gauge measures the float bowl fuel level when using PMO, Weber or Zenith 3 barrel carburetors.
Includes instructions and adjustment washers.
Sold individually and it is suggested to install two gauges, one per bowl.

pmo

Fits
Porsche 911
Porsche 964

Porsche 993

Please see the PMO vs OE Carb Overview

Accelerator linkage kit for Weber carburetor. Porsche 911 / 964 / 993

PM-O919-0

Product Information

PMO Induction Accelerator linkage kit for Weber carburetor.
Please see the PMO vs OE Carb Overview

Kit Includes
Carburettor actuating lever
Throttle rod with ball joints x 3
Ball ends x 5
Actuating lever bracket x 2

pmo

Fits
Porsche 911
Porsche 964

Porsche 993

Accelerator linkage kit when fitting PMO carburetors.

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