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Powerflex
Powerflex for Porsche
EPTG Ltd (European Polyurethane Technologies Group) was formed in the UK in 1996 to take advantage of the significant advances made in the development of polyurethane in recent years.The company has wide experience in automotive suspension and chassis systems and combining these design skills with advanced polyurethane manufacturing techniques led to the development of a wide range of high performance, Porsche automotive polyurethane components now known the world over by the product name POWERFLEX.The company operates in a self-contained state-of-the-art factory, manufacturing everything in-house.
Choosing the Right Fit for Your Porsche
Where Powerflex 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.
- Powerflex polyurethane bushes are chosen when Porsche owners want tighter handling, sharper response, and longer-lasting bush material than ageing rubber. Real-world reasons include curing vague steering, reducing wheel hop, improving alignment stability, and refreshing suspension without replacing whole arms in some cases.
- Increased NVH (noise/vibration/harshness), squeaks if not lubricated correctly, and binding if installed improperly. Poor ride or uneven behaviour is often caused by fitting too-stiff bushes in the wrong locations, worn mounts elsewhere, or skipping alignment after changes.
- Choose compounds and locations carefully to balance response against comfort, especially on road-driven Porsche models.
- Use the supplied or approved lubricant on Powerflex bushes and torque fixings at normal ride height to minimise the risk of squeaks and binding.
- Target the worst wear points first rather than replacing every bush at once, and plan a full alignment check after suspension changes.
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.
Suspension & Axle — Suspension and axle components for Porsche models, replaced to restore safe, predictable handling, braking stability and ride comfort where wear or age has affected performance.
Powerflex Polyurethane Bushes — Dedicated Powerflex polyurethane bushes for Porsche, used to tighten chassis control and replace ageing rubber so geometry stays more consistent under load.
Suspension Upgrades — Porsche suspension upgrade parts such as dampers, springs, anti-roll bars and mounts, allowing you to tune handling, body control and ride to suit road or track use.
Control Arms Front — Front control arms and related components for Porsche, replaced to correct geometry, cure knocks and restore precise steering response.
Powerflex Polyurethane Bushes — Powerflex-branded polyurethane bush solutions tailored to Porsche applications, ideal when you want a more direct feel and improved durability compared with tired rubber.
Explore Powerflex at Design911
View the current Powerflex range for Porsche at Design911, then filter by model and category to narrow down to the right parts.
Size: 18mm anti-roll bar diameter
Quantity: 2 (2 per car)
Porsche Reference to: 477411313B

Fits:
Porsche 911 1978-85 Rear axle
Porsche 911 TURBO 1978-85 Rear axle
Porsche 911 TURBO 1989 Rear axle
Porsche 944 1985-91 Rear axle Please choose by size
Porsche 964 RS Rear axle
Porsche 964 C4 Rear axle Please choose by size
Porsche 968 Rear axle Cars with Sport Suspension & tiptronic transmission
Porsche 993 C2/C4 Rear axle Cars with standard suspension
Porsche 993 C2S/C4S Rear axle Cars with Sport Suspension - Please choose by size
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11.
Pack of 2. Two bushes per car
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFF57-209-18H
The product you are viewing cross references to these numbers
- 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 1978-1989 3.3L Turbo (930)
- 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
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
Stabilizer Bar Bush Rear - 18mm.
Drop Link Bush Rear - 18mm.
Fits - left and right side.

SET OF 4
Replacement for Porsche parts No. 91133379302
Fits:
Porsche 911 1974-77 Rear
Porsche 911 Turbo 1975-77
Porsche 914 1970-76 Rear
Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-412-18H
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 914 (1970-1976)
Size: 22mm
SET OF 4
Replacement for Porsche parts No. 91134388100

Fits:
Porsche 911 1984-86 3.2L and Turbo Front axle - Please choose by size
Porsche 911 1987-89 3.2L and Turbo Front axle
Click 'Zoom in' for large parts diagram.
Diagram Ref No 24
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFF57-403-22H
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Size: 20mm
Replacement for Porsche parts No. 91134379203
SET OF 4

Fits:
Porsche 911 1974-86 Front axle
Porsche 911 Turbo (930) 1975-86 Front axle
Click 'Zoom in' for large parts diagram.
Diagram Ref No 23.
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFF57-403-20H
The product you are viewing cross references to these numbers
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Replacement OEM Part Number: 91134379202
Size: 16mm
SET OF 4

Fits:
Porsche 911 1974-77
Click 'Zoom in' for large parts diagram.
Diagram Ref No 23
Note: Please measure anti roll bar diameter before ordering.
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFF57-403-16H
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Fits OE Wishbone Front (A-Frame) part numbers 91134190100 /91134190200.
SET OF 4 BUSHES

Fits:
Does not fit models made before 1969, fits all models 1969 to 1989.
Porsche 911 1969-89
Porsche 912
Porsche 914 1970-76
Fits to No. 14 on the diagram
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFF57-401H
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 914 (1970-1976)
Fits to spring plate OEM part number 90133300309
/ 90133300301.
SET OF 4

Fits:
Porsche 911 Classic (1968 - 1969)
Porsche 911 Classic (1969 - 1973)
Porsche 911 Classic (1974-1977)
Porsche 911 Classic (1974-1977) Turbo
Porsche 911 Classic (1977 - 1986)
Porsche 911 Classic (1978 - 1989) Turbo
Porsche 911 Classic (1987 - 1989)
Fits to No. 16 on the diagram.
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-409H
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)
Replacement OEM Part Number: 96442422300.
Fits inside the Gearshift Coupling part number 91142402404

Fits:
Not for G50 Transaxle
Porsche 356B 1960-65
F >>110 406 COUPE -REUTTER-
F >>153 022 CABRIO HARDTOP
F >> 87 491 ROADSTER
Porsche 911 1970-86
Porsche 911 turbo 1975-88
Porsche 914 1973-76
Porsche 924 1976-79
Click 'Zoom in' for large parts diagram.
Diagram ref no 25
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-430H
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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 2.0L 1976-79
- Porsche 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)
Replacement OEM Part Number: 96442422300.
Fits inside the Gearshift Coupling part number 91142402404

Fits:
Not for G50 Transaxle
Porsche 356B 1960-65
F >>110 406 COUPE -REUTTER-
F >>153 022 CABRIO HARDTOP
F >> 87 491 ROADSTER
Porsche 911 1970-86
Porsche 911 turbo 1977-86
Porsche 914 1973-76
Porsche 924 1976-79
Click 'Zoom in' for large parts diagram.
Diagram ref no 25
Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.
Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.
If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.
Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:
- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsitive steering
- Longer service life of suspension components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-430BLK
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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 2.0L 1976-79
- Porsche 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)
Replacement OEM Part Number: 96442422300.
Fits inside the Gearshift Coupling part number 91142402404

Fits:
Not for G50 Transaxle
Porsche 356B 1960-65
F >>110 406 COUPE -REUTTER-
F >>153 022 CABRIO HARDTOP
F >> 87 491 ROADSTER
Porsche 911 1970-86
Porsche 911 turbo 1977-88
Porsche 914 1973-76
Porsche 924 1976-79
Click 'Zoom in' for large parts diagram.
Diagram ref no 25
Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:
- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsitive steering
- Longer service life of suspension components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-430
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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 2.0L 1976-79
- Porsche 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)

Set of 2 bushes which will fit 2 Engine mounts
Fits inside the Mounts of:
Porsche 911 1965-69 Engine Mount
Porsche 911 1970-86 Engine & 915 Gearbox Mount
Porsche 911 1986-89 Engine Mount
Porsche 930 1975-77 Engine Mount
Porsche 930 1978-89 Engine Mount
(not CS, not Cabrio)
Please note the price does not include mounts
Fits to No.8 on the diagram
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-415H
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 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Sold as a pair (both rear shock absorbers)
OEM Part Number: 91133352100

Fits:
Porsche 911 1965-89
Porsche 912 1965-69
Porsche 356 1950-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 41
Powerflex Heritage Collection. For Modern Day Classics.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collectors car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-413H
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 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Sold as a pair (both rear shock absorbers)
OEM Part Number: 91133352100
Fits:
Porsche 911 1965-89
Porsche 912 1965-69
Porsche 356 1950-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 41
Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.
Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.
If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.
Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:
- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-413BLK
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 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Sold as a pair (both shock rear absorbers)
OEM Part Number: 91133352100

Fits:
Porsche 911 1965-89
Porsche 912 1965-69
Porsche 356 1950-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 41
Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:
- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-413
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 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Replacement for Porsche parts No. 90133379304.
SET OF 4

Rear stabilizer bar bush - 16mm.
Rear drop link bush - 16mm.
Fits - left and right side.
Fits:
Porsche 911 1965-68 L / T / TU Rear 4 required per car
(Stabiliser bar and Drop link)
Porsche 914 1970-76 Rear 2 required per car
(Stabiliser bar)
Diagram Ref No 2.
Click 'Zoom in' for large parts diagram.
Powerflex Heritage Collection. For Modern Day Classics.
A range of bushes engineered for the road to compliment your classic car.
POWERFLEX Heritage Collection bushes are manufactured using modern day materials with properties biased for the road. These dark grey coloured bushes will improve any collector's car, whilst retaining the same standard appearance of a rubber bush.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-412-16H
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)
Replacement for Porsche parts No. 90133379304.
SET OF 4

Rear stabilizer bar bush - 16mm.
Rear drop link bush - 16mm.
Fits - left and right side.
Fits:
Porsche 911 1965-68 L / T / TU Rear 4 required per car
(Stabiliser bar and Drop link)
Porsche 914 1970-76 Rear 2 required per car
(Stabiliser bar)
Diagram Ref No 2.
Click 'Zoom in' for large parts diagram.
NOTE: Please check anti roll bar diameter before ordering.
Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:
- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsitive steering
- Longer service life of suspension components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFR57-412-16
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)