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Spaco Item number: 3330147

Carburetor -DELLORTO / SPACO 20/17D SI - Vespa 125GT, Sprint150, GTR125, VNB, VBB, VGLA, GL150, Super

2 Ratings

59,00 €*

available immediately

Shipping weight 0,77 kg

Information on product safety

Replacement carburettor for the no longer available original SI 20/17 from Dell'Orto.

Produced by Spaco (India) under licence and quality control from Dell'Orto.

The carburettor has an integrated choke mechanism which is controlled by a cable. Some old vehicles, such as the VNA1 and VNA2, have an external choke control (lever directly under the swing saddle). In this case the carburetor sump of the PX80-150 models (or also e.g. Sprint150) would be needed additionally as well as an air filter of the Vespa PX models.

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Top Qualität

Marcell G. from Münster 10/09/2025

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Carburetor

Main nozzle size

98

Main nozzle type

Dellorto SI (4576)

Secondary nozzle type

Dellorto SI (9892)

Air nozzle type

Dellorto SI (5827)

Slider type

Flachschieber

Choke type

manuell Seilzug

Connection type Intake manifold

Flanschverbindung

Position of mixture screw

links

Fuel hose position

rechts

Float chamber material

Metall

Size of secondary nozzle

42

Air nozzle size

160

Mixing tube size

BE1

has Powerjet

nein

Slider size

6823.2

Height

120 mm

Width

71 mm

Depth

80 mm

Connection width air filter

33 mm

Connection width of intake manifold

60 mm

Fuel hose connection width

8 mm

has oil connection

nein

has vacuum connection

nein

Venturi size

17 mm

Connection type Air filter

mit Schrauben

Position of idle throttle screw

oben

OEM numbers (for comparison purposes only)

Piaggio:

89570, 91155, 91440

Matching

Spare parts

Carburator repair kit -LML- Dellorto SI 17-20 (type w/o autolube)

Carburator repair kit -LML- Dellorto SI 17-20 (type w/o autolube)

Delivery date

Fuel filter chamber cover -DELLORTO- SI

Dellorto
2410894

Fuel filter chamber cover -DELLORTO- SI

Fuel/air mixture screw -DELLORTO- SI20-24mm - thread M5 x 0.75mm - thick tip (Ø=1.5mm) - type Vespa PX with slotted screw

Dellorto
5350001

Fuel/air mixture screw -DELLORTO- SI20-24mm - thread M5 x 0.75mm - thick tip (Ø=1.5mm) - type Vespa PX with slotted screw

Spring -DELLORTO- SI (fuel/air mixture screw), PHVA PHBN (idle screw)

Dellorto
5350002

Spring -DELLORTO- SI (fuel/air mixture screw), PHVA PHBN (idle screw)

Throttle slide -DELLORTO SI24- Vespa PX200 (Typ 8492-4)

Dellorto
5350004

Throttle slide -DELLORTO SI24- Vespa PX200 (Typ 8492-4)

Slide spring -DELLORTO- SI20/20E, SI20/20H, SI24/24E, SI24/24G, SI24/24H, SI27/23 (GS160/SS180)

Dellorto
5350005

Slide spring -DELLORTO- SI20/20E, SI20/20H, SI24/24E, SI24/24G, SI24/24H, SI27/23 (GS160/SS180)

Float -DELLORTO- SI

Dellorto
5350008

Float -DELLORTO- SI

Float needle -DELLORTO, quadrilateral, 4.5mm- SI (Vespa PX), SH (Lambretta LI series 3, LIS, SX, TV, DL, GP), PHBH, PHBL - not spring loaded

Dellorto
5350009

Float needle -DELLORTO, quadrilateral, 4.5mm- SI (Vespa PX), SH (Lambretta LI series 3, LIS, SX, TV, DL, GP), PHBH, PHBL - not spring loaded

Spring idle screw -DELLORTO- SI

Dellorto
5350010

Spring idle screw -DELLORTO- SI

Idle screw -DELLORTO- SI (type Vespa PX)

Dellorto
5350011

Idle screw -DELLORTO- SI (type Vespa PX)

Screw fuel banjo -DELLORTO- SHB16/10, SHB16/16

Dellorto
5350012

Screw fuel banjo -DELLORTO- SHB16/10, SHB16/16

Fuel banjo -DELLORTO- SI

Dellorto
5350013

Fuel banjo -DELLORTO- SI

Screw float chamber -DELLORTO- SI - M4,5x24mm

Dellorto
5350015

Screw float chamber -DELLORTO- SI - M4,5x24mm

Screw float chamber -DELLORTO- SI - M4,5x14mm

Dellorto
5350016

Screw float chamber -DELLORTO- SI - M4,5x14mm

Fuel filter -DELLORTO- SI carburettor, MA carburettor, SH carburettor, UA carburettor, MB carburettor

Dellorto
5350017

Fuel filter -DELLORTO- SI carburettor, MA carburettor, SH carburettor, UA carburettor, MB carburettor

Float axle -DELLORTO- SHB, SI

Dellorto
5350056

Float axle -DELLORTO- SHB, SI

Fuel/air mixture screw -DELLORTO- SI20/20D, SI24/24E, SI24/24H - thread M5 x 0.50mm - thin pin (Ø=0.65mm) - type Vespa PX with Allen screw

Dellorto
5350057

Fuel/air mixture screw -DELLORTO- SI20/20D, SI24/24E, SI24/24H - thread M5 x 0.50mm - thin pin (Ø=0.65mm) - type Vespa PX with Allen screw

Slide drawbar -DELLORTO- SI (type Vespa PX -1984)

Dellorto
5350064

Slide drawbar -DELLORTO- SI (type Vespa PX -1984)

Tips & useful information

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Accessories

Oil drain container 8L -HÜNERSDORFF- black

Hünersdorff
3330922

Oil drain container 8L -HÜNERSDORFF- black

Funnel - Petrol Funnel - hopper -HÜNERSDORFF- Ø 164 mm- (HDPE) - red

Hünersdorff
3330925

Funnel - Petrol Funnel - hopper -HÜNERSDORFF- Ø 164 mm- (HDPE) - red

Intake manifold - for reed valve -LTH- Vespa VNA,VNB, VBB, VBC, GT, GTR, Sprint, Rally, PX, Cosa - reed valve below SI carburettor

OEM-Qualität
3331597

Intake manifold - for reed valve -LTH- Vespa VNA,VNB, VBB, VBC, GT, GTR, Sprint, Rally, PX, Cosa - reed valve below SI carburettor

Delivery date

Carburator mounting screw M7 -VESPA- PX (since 1984), T5 125cc, Cosa

Piaggio
5250041

Carburator mounting screw M7 -VESPA- PX (since 1984), T5 125cc, Cosa

Air filter -OEM QUALITY- Vespa VNA, VNB1 (-VNB1M048000)

OEM-Qualität
7674920

Air filter -OEM QUALITY- Vespa VNA, VNB1 (-VNB1M048000)

Washer -DIN 125- M9 - (used for shock absorber bolt down (motor) and carburetor mounting) Vespa PX80, PX125, PX150, PX200 (-1984), Rally180 (VSD1T), Rally200 (VSE1T) Sprint150 (VLB1T), TS125 (VNL3T), GT125 (VNL2T)

Piaggio
9000095

Washer -DIN 125- M9 - (used for shock absorber bolt down (motor) and carburetor mounting) Vespa PX80, PX125, PX150, PX200 (-1984), Rally180 (VSD1T), Rally200 (VSE1T) Sprint150 (VLB1T), TS125 (VNL3T), GT125 (VNL2T)

Spring washer -DIN 127- M9 (used for shock-absorber/engine Vespa PX80, PX125, PX150, PX200 (-1984), Rally180 (VSD1T), Rally200 (VSE1T), Sprint150 (VLB1T), TS125 (VNL3T), GT125 (VNL2T), GTR125 (VNL2T), GS160 / GS4 (VSB1T), SS180 (VSC1T), GL150 (VLA1T), Sup

OEM-Qualität
9901086

Spring washer -DIN 127- M9 (used for shock-absorber/engine Vespa PX80, PX125, PX150, PX200 (-1984), Rally180 (VSD1T), Rally200 (VSE1T), Sprint150 (VLB1T), TS125 (VNL3T), GT125 (VNL2T), GTR125 (VNL2T), GS160 / GS4 (VSB1T), SS180 (VSC1T), GL150 (VLA1T), Sup

Matching

Alternative products

Carburator -DELLORTO / SPACO SI26/26E (Ø=25mm)- Vespa PX200 (type with autolub) - COD 617

Dellorto

Dellorto
1520016

Carburator -DELLORTO / SPACO SI26/26E (Ø=25mm)- Vespa PX200 (type with autolub) - COD 617

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OEM-Qualität
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Kickstart sprocket -OEM QUALITY- Vespa P 150S (-169035), Super, VNB5T-VNB6T, VBB, Motovespa 125L (Motor V101M), 150L (Motor V202M), 125N (Motor 542M), 150Sprint (Motor 04M), 150GS (Motor 04M), 160 (Motor 09M) - teeth 12/13, Ø=22.0mm

Stand feeds -VESPA Ø= 22mm- Vespa PX, Cosa, T5 125cc, PK S, PK XL - alloy black

Fa Italia
1050040

Stand feeds -VESPA Ø= 22mm- Vespa PX, Cosa, T5 125cc, PK S, PK XL - alloy black

Spare wheel cover -OEM QUALITY- Vespa 3.50 - 8 - grey, with pouch

OEM-Qualität
1050219

Spare wheel cover -OEM QUALITY- Vespa 3.50 - 8 - grey, with pouch

Speedometer drive gear set -BGM ORIGINAL- Vespa 11 tooth, Ø=21,8mm, metal + 9 tooth, l= 31mm, 2,7mm square, black (fits speedometer drive gear 9 tooth) - (for Vespa V50, 50N, 50L, 50R (V5A1T, 9 inch tyres))

BGM ORIGINAL
1079157KT

Speedometer drive gear set -BGM ORIGINAL- Vespa 11 tooth, Ø=21,8mm, metal + 9 tooth, l= 31mm, 2,7mm square, black (fits speedometer drive gear 9 tooth) - (for Vespa V50, 50N, 50L, 50R (V5A1T, 9 inch tyres))

Import
1114003P

Speedo -IMPORT-shape- VBA, VBB, GL150 (VLA1T), GT125 (VNL2T), GTR125 (VNL2T), Sprint - rectangular logo 110km/h -

Throttle control cable -PIAGGIO, L=2630mm, fitting Ø=3,0mm x 3mm- Piaggio APE 50 (TL1-6T), APE125 (TM1T)

Piaggio
1118305

Throttle control cable -PIAGGIO, L=2630mm, fitting Ø=3,0mm x 3mm- Piaggio APE 50 (TL1-6T), APE125 (TM1T)

Silent block shock absorber/engine -BGM PRO- Vespa Largeframe, Smallframe

BGM ORIGINAL
1157103

Silent block shock absorber/engine -BGM PRO- Vespa Largeframe, Smallframe

Grip -PIAGGIO- Vespa PX EFL (-2000) - black

Piaggio
1179833

Grip -PIAGGIO- Vespa PX EFL (-2000) - black

Brake lever -OEM QUALITY type Grimeca- Vespa PX DISC (1998-), LML Star, Stella - silver

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1494804

Brake lever -OEM QUALITY type Grimeca- Vespa PX DISC (1998-), LML Star, Stella - silver

Carburator -DELLORTO / SPACO SI20/20D- Vespa PX150 (1977-1984, type without autolube) - COD 588

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1520001

Carburator -DELLORTO / SPACO SI20/20D- Vespa PX150 (1977-1984, type without autolube) - COD 588

Carburator -DELLORTO / SPACO SI24/24E- Vespa PX200 (type w/o autolub) - COD 586

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1520002

Carburator -DELLORTO / SPACO SI24/24E- Vespa PX200 (type w/o autolub) - COD 586

Carburator -DELLORTO / SPACO SI24/24E- Vespa PX200 (type with autolub) - COD 583

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1520003

Carburator -DELLORTO / SPACO SI24/24E- Vespa PX200 (type with autolub) - COD 583

Carburetor -DELLORTO / SPACO 20/17D SI - Vespa 125GT, Sprint150, GTR125, VNB, VBB, VGLA, GL150, Super

Carburetor -DELLORTO / SPACO 20/17D SI - Vespa 125GT, Sprint150, GTR125, VNB, VBB, VGLA, GL150, Super

Carburetor -DELLORTO / SPACO 20/17D SI - Vespa 125GT, Sprint150, GTR125, VNB, VBB, VGLA, GL150, Super

Carburetor -DELLORTO / SPACO 20/17D SI - Vespa 125GT, Sprint150, GTR125, VNB, VBB, VGLA, GL150, Super

Carburetor -DELLORTO / SPACO 20/17D SI - Vespa 125GT, Sprint150, GTR125, VNB, VBB, VGLA, GL150, Super