Carburetors & Parts


Fits:
Porsche 911 T 1969-70 WEBER Carbs
Porsche 911 T 1971-73 ZENITH Carbs
Porsche 914/6 1970–1972
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110813100
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 914 (1970-1976)

Fits:
Porsche 911 1965-89
Product Specifications:
Part Number: E-3671
Product Style: Oval Air Filter
Air Filter Shape: Oval
Height: 3.25 in (83 mm)
Inner Wire: No
Inside Length: 10.75 in (273 mm)
Inside Width: 4 in (102 mm)
Outside Length: 12 in (305 mm)
Outside Width: 5.25 in (133 mm)
Top Style: Open
Top Material/Finish: None
Filter Material: Cotton Gauze
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box.
Works with Original Equipment Manufacturer Vehicle Electronics.
Environmentally Friendly, K&N Reusable Air Filters
Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
E-3671
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

This Product Fits:
Porsche 911 with carbs
K&N brand air filter, part number 56-1240 which is now 56-1770-1 this is for Weber 40/46 IDA (Triple carb) as fitted to Porsche 911.
K&N Custom Air Filter kits are designed to allow the maximum performance from your carburettors, yet keep the dirt on the outside where it belongs. These assemblies come with top and base plates and the famous K&N High-Flow Washable Air Filter.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
56-1770-2
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

Fits:
Porsche 911 L/S/T/T 1968-69
Porsche 911 1970-77
Porsche 911 (930) Turbo 1975-77
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90142403700
The product you are viewing cross references to these numbers
- 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)

Fits:
Porsche 911 1970-77
Porsche 911 (930) Turbo 1975-77
Diagram ref no 20
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90142431700
The product you are viewing cross references to these numbers
- 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)
Fits:
Porsche 911 1970-77
Porsche 911 (930) Turbo 1975-77
Diagram ref no 20
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90142431700
The product you are viewing cross references to these numbers
- 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)
Please note each set is made to order allow 6 - 8 weeks
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
102-102-00241-01
The product you are viewing cross references to these numbers
- 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) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Fits
Porsche 911 - Air cooled engine with Weber Carburettors
Kit Includes
Please see the PMO vs OE Carb Overview
- 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) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97


Fits:
Porsche 911 / 912 1965-69
Porsche 914 1970-75
Click 'Zoom in' for large parts diagram.
Diagram ref no 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110808900
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 914 (1970-1976)

Rain hats for K&N air filters IDF 40/44 on Weber carbs.
Made from fiber cloth with a honey-coloured resin.
Fits:
Porsche 911
Porsche 914-6
- 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)

Made from fiber cloth with a honey-coloured special resin.
Fits:
Porsche 911 R / ST
Porsche 906
Porsche 914-6 GT
Available in three combinations:
2 x flat
2 x bent
1 x flat + 1 x bent
- 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)


Fits:
Porsche 911 F with a Zenith carburetor (1970 to 1973)
Click 'Zoom in' for large parts diagram.
Diagram ref no 61
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110097400
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

40TIN Service kit
Service kit to suit the Zenith Pierburg 40TIN as fitted to Porsche 911 2195cc and 2341cc 1969-73
Service kits include gaskets, seals, diaphrams and needle/seat
This service kit includes parts for 2 carburettors
Please note that service kits do not include jets.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9612862000
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)

40IDA3C pair (LH plus RH)
New pair of authentic Spanish Weber 40 IDA3C carburettors to suit Porsche 911
These have been cast from 100% new tooling produced from the original Italian Weber drawings and manufactured in the Spanish Weber factory using the very latest production techniques to ensure the finest quality and attention to detail.
These are expected to be available from February 2019 onwards, and advance orders are being accepted now
Calibration is as follows:
Venturi 30mm
Aux Venturi 4.5
Main Jet 125
Air Corrector 180
Emulsion Tube F26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3130000102
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)

46IDA3C pair (LH plus RH)
New pair of authentic Spanish Weber 46 IDA3C carburettors to suit Porsche 911
These have been cast from 100% new tooling produced from the original Italian Weber drawings and manufactured in the Spanish Weber factory using the very latest production techniques to ensure the finest quality and attention to detail.
These are expected to be available from February 2019 onwards, and advance orders are being accepted now
Calibration is as follows:
Venturi 42mm
Aux Venturi 4.5
Main Jet 170
Air Corrector 145
Emulsion Tube F24
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3136000102
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)


Fits:
Porsche 911, E / S 1969-1971)
with mechanical injection system
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90111005700
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)
Precision Carburetors & Components – Heritage
Performance and Reliability for Porsche Classics
Carburetors remain the beating heart of many classic
Porsche engines, delivering the perfect air-fuel mixture for smooth,
responsive combustion. At Design911, we offer a comprehensive range of high-quality
carburetors and replacement components designed to maintain or enhance the
authentic driving experience of vintage and air-cooled Porsche models.
From complete carburetor assemblies to jets, diaphragms, gaskets, floats, and linkages, our products are engineered to precise manufacturer standards, ensuring consistent performance, easy tuning, and reliable fuel delivery — whether for restoration or motorsport use.
What Do Carburetors and Carburetor Parts Do?
A carburetor’s role is to blend fuel and air in the correct ratio before it enters the engine. This process ensures efficient combustion, smooth throttle response, and optimal power output.
Core Functions:
- Regulate
air-fuel mixture for various engine speeds and loads.
- Deliver
consistent fuel flow for smooth idling and acceleration.
- Maintain
throttle response across changing temperatures and altitudes.
- Support efficient combustion and improved drivability in heritage engines.
Modern performance replacements and rebuild kits allow older Porsche models to retain their period-correct feel while achieving modern levels of reliability.
Why Do Carburetors Fail?
Over time, carburetors and their internal components degrade
due to fuel varnish, dirt contamination, and mechanical wear. Common
failure symptoms include:
- Hard
starting or stalling due to clogged jets or passages.
- Uneven
idling or misfiring from air leaks or worn gaskets.
- Poor
acceleration or fuel economy caused by sticking floats or needle
valves.
- Fuel leaks or drips from perished seals or warped housings.
Regular inspection and replacement of worn parts prevent poor performance, fuel inefficiency, and potential engine damage.
Why Replace with Precision-Engineered Carburetor Components?
Replacing worn components with precision-engineered carburetor parts ensures your Porsche’s engine maintains its legendary throttle feel and power delivery.
Key Benefits:
- Restores
consistent air-fuel mixing and smooth engine operation.
- Improves cold starting and throttle response.
- Eliminates
leaks and uneven idle, improving drivability.
- Extends
engine life through correct fueling and reduced detonation risk.
- Maintains
heritage authenticity with manufacturer-quality materials and
machining.
- Perfect compatibility with period-correct Porsche carburetor systems (e.g., Weber, Solex, Zenith).
Whether you’re rebuilding a classic 911, 914, or 356, our selection of carburetors and components delivers modern precision with period-correct performance.
Highlights:
- Complete
range of carburetors and rebuild components for Porsche classics.
- Precision-machined
parts ensure reliable fuel delivery and response.
- Manufacturer-quality
fitment for seamless installation.
- Improved
combustion efficiency and performance consistency.
- Compatible with Weber, Solex, and Zenith systems.
- Ideal for engine restorations, rebuilds, and tuning projects.