Dellorto SI Carburetor Parts
Dellorto SI Carburetor Parts

Dellorto SI Parts

Dellorto SI Carburetor Parts.

On this page you will find all currently available parts for the Dellorto SI range carburettors.

Click HERE for an exploded view drawing of the Dellorto SI.

The numbers in the drawing correspond to the numbers in brackets at the beginning of the article description.

We are still very much expanding our parts offerings for on these carburettors so please contact us by email if the part that you are looking for is not listed.

Dellorto SI Carburetor Parts

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4576
(3) Main Jet for Dellorto SI carburetors

(3) Main Jet for Dellorto SI carburetors

Main jet for for Dellorto SI carburetors.

We only supply original Dellorto jets, marked with the famous diamond-shaped "Inc" logo.

Available in sizes:

  • 80
  • 85
  • 90

Other sizes are available on request.
Please don't hesitate to contact us with your requirements.

Required quantity per carburettor: 1

This is item number 3 in the drawing.

(3) Main Jet for Dellorto SI carburetors

4567
(9) Float for Dellorto SI carburetors

(9) Float for Dellorto SI carburetors

Original Dellorto float for Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 9 in the drawing.

 

 

 

(9) Float for Dellorto SI carburetors

4189
(10) Fuel Filter Cover for Dellorto SI carburetors

(10) Fuel Filter Cover for Dellorto SI carburetors

Fuel filter cover for the Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 10 in the drawing.

 

 

 

(10) Fuel Filter Cover for Dellorto SI carburetors

4188
(11) Fiber Washer for Fuel Filter Cover on Dellorto SI carburetors

(11) Fiber Washer for Fuel Filter Cover on Dellorto SI carburetors

Fiber washer to seal the top cover on the Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 11 in the drawing.

 

 

 

(11) Fiber Washer for Fuel Filter Cover on Dellorto SI carburetors

4187
(12) Fuel Filter for Dellorto Si carburetors

(12) Fuel Filter for Dellorto SI carburetors

Original fuel filter for the Dellorto Si carburetors.

Required quantity per carburettor: 1

This is item number 12 in the drawing.

 

 

(12) Fuel Filter for Dellorto SI carburetors

1491
(13) Bolt for Top Cover on Dellorto SI carburetors

(13) Bolt for Top Cover on Dellorto SI carburetors

Short bolt / screw to secure the top cover on the Dellorto SI carburetors.

Required quantity per carburettor: depending on exact version 1 or 2

This is item number 13 in the drawing.

 

 

 

(13) Bolt for Top Cover on Dellorto SI carburetors

5010
(14) Spring Washer for Dellorto SI carburetors

(14) Spring Washer for Dellorto SI carburetors

Spring washer for the Dellorto SI carburetors.

Required quantity per carburettor: 2

This is item number 14 in the drawing.

 

 

(14) Spring Washer for Dellorto SI carburetors

11819
(15) Top Cover Casting for Dellorto SI 20 carburetors

(15) Top Cover Casting for Dellorto SI 20 carburetors

Top cover casting for the Dellorto SI 20 carburetors.

Please note that this fits the Dellorto SI20 ONLY!

Needle valve housing: 4.5 mm diameter

Required quantity per carburettor: 1

This is item number 15 in the drawing.

(15) Top Cover Casting for Dellorto SI 20 carburetors

4190
(16) Screw for Fuel Filter Cover on Dellorto SI carburetors

(16) Screw for Fuel Filter Cover on Dellorto SI carburetors

Screw to secure the fuel filter cover of the Dellorto SI series carburetors.

Required quantity per carburettor: 1

This is item number 16 in the drawing.

 

 

 

(16) Screw for Fuel Filter Cover on Dellorto SI carburetors

3385
(17) Fiber Washer for Dellorto SI carburetors

(17) Fiber Washer for Dellorto SI carburetors

Fiber Washer for the fuel filter cover of the Dellorto SI series carburetors.

Required quantity per carburettor: 1

This is item number 17 in the drawing.

 

 

(17) Fiber Washer for Dellorto SI carburetors

4570
(19) Fiber Washer for the Fuel Banjo on Dellorto SI carburetors

(19) Fiber Washer for the Fuel Banjo on Dellorto SI carburetors

Fiber washer that seals the fuel banjo on the Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 19 in the drawing.

 

 

 

(19) Fiber Washer for the Fuel Banjo on Dellorto SI carburetors

4052
(21) Fiber Washer for the Banjo Bolt on Dellorto SI carburetors

(21) Fiber Washer for the Banjo Bolt on Dellorto SI carburetors

Banjo bolt fiber washer for the Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 21 in the drawing.

 

 

(21) Fiber Washer for the Banjo Bolt on Dellorto SI carburetors

4568
(22) Long Fuel Banjo Bolt for Dellorto SI Version 27 - 23 carburetors

(22) Long Fuel Banjo Bolt for Dellorto SI Version 27 - 23 carburetors

Fuel banjo bolt for the 27 - 23 versions of the Dellorto SI carburetors with 8 mm pipe fitting banjos only.

This bolt has an overall length of some 21 mm with a shaft length of approximately 17.5 mm and will NOT fit the banjos for 6 mm fuel lines.

Required quantity per carburettor: 1

This is item number 22 in the drawing.

 

(22) Long Fuel Banjo Bolt for Dellorto SI Version 27 - 23 carburetors

6942
(23) Top Cover Gasket for Dellorto SI carburetors

(23) Top Cover Gasket for Dellorto SI carburetors

Top cover gasket for the Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 23 in the drawing.

 

 

 

 

(23) Top Cover Gasket for Dellorto SI carburetors

4559
(24) Needle Valve for Dellorto SI carburetors - Solid

(24) Needle Valve for Dellorto SI carburetors - Solid

Factory-original, Viton-tipped, needle valve for the Dellorto SI carburetors.

Please note that this is a solid needle.

For the spring-loaded needle, please see article 8080.

Attention:
Only Dellorto factory-original needle valves have a red Viton tip and carry the famous "INC" engraving!

Required quantity per carburettor: 1

This is item number 24 in the drawing.

(24) Needle Valve for Dellorto SI carburetors - Solid

8080
(24) Needle Valve for Dellorto SI carburetors - Spring-Loaded

(24) Needle Valve for Dellorto SI carburetors - Spring-Loaded

Factory-original, Viton-tipped, needle valve for the Dellorto SI carburetors.

Please note that this is the spring-loaded needle.

For the solid needle, please see article 4559.

Attention:
Only Dellorto factory-original needle valves have a red Viton tip and carry the famous "INC" engraving!

Required quantity per carburettor: 1

This is item number 24 in the drawing.

(24) Needle Valve for Dellorto SI carburetors - Spring-Loaded

4560
(25) Float Pivot Pin for Dellorto SI carburetors

(25) Float Pivot Pin for Dellorto SI carburetors

Pivot pin for the float of the SI carburetors.

Required quantity per carburettor: 1

This is item number 25 in the drawing.

 

 

 

 

(25) Float Pivot Pin for Dellorto SI carburetors

1409
(28) Idle Screw Spring for Dellorto SI carburetors

(28) Idle Screw Spring for Dellorto SI carburetors

Idle screw spring for Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 28 in the drawing.

 

 

 

 

(28) Idle Screw Spring for Dellorto SI carburetors

1411
(30) Spring for Air Mixture Screw on Dellorto SI carburetors

(30) Spring for Air Mixture Screw on Dellorto SI carburetors

Spring to secure the setting of the various versions of the air mixture screw on the Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 30 in the drawing.

This is a genuine Dellorto part.

 

 

(30) Spring for Air Mixture Screw on Dellorto SI carburetors

4670
(33) Mixture screw spring for Dellorto SI carburetors

(33) Mixture screw spring for Dellorto SI carburetors

Mixture screw spring for Dellorto SI carburetors.

Required quantity per carburettor: 1

This is item number 33 in the drawing.

 

 

(33) Mixture screw spring for Dellorto SI carburetors

52537
(43) Service Kit for Dellorto SI 17 20 24 carburetors

(43) Service Kit for Dellorto SI 17 20 24 carburetors

Dellorto factory-original service kit for the Dellorto SI 17, 20 & 24 carburetors.

Contains all required fiber rings and gaskets as in the picture.

Required quantity per carburettor: 1

This is item number 43 in the drawing.

 

(43) Service Kit for Dellorto SI 17 20 24 carburetors

flexoid5xa4
Set of 5 x A4 Sheets of Flexoid Gasket Paper Material

Set of 5 x A4 Sheets of Flexoid Gasket Paper Material

Set of 5 x A4 Sheets of Flexoid Gasket Paper Material.

Almost a "First Aid Kit" for the home mechanic!

This set of first quality gasket paper contains 5 sheets in DIN A4 size (300 x 210 mm or roughly 11.8 x 8.3 inches) in 5 different thicknesses.

You can cut these sheets to almost any desirable size and shape to help you out when the required gasket is not at hand.

The sheets are made of cellulose based, plasticised gelatin-impregnated material.

The sheets are of the following thickness:

  • 0.15MM
  • 0.25MM
  • 0.4MM
  • 0.8MM
  • 1.6MM

Set of 5 x A4 Sheets of Flexoid Gasket Paper Material

OWV
Sytec Fuel Line One Way Valve

Sytec Fuel Line One Way Valve

Sytec Fuel Line One Way Valve.

We have two versions available:

  • Suitable for 6 mm internal diameter fuel hoses
  • Suitable for 8 mm internal diameter fuel hoses

Silver anodized finish.

Prevents fuel from leaking back into the fuel tank.

Suitable for regular fuel, E10, E85 and Diesel.

Viton seals.

We strongly advise you to secure your fuel lines using our stainless steel jubilee clips, despite the barbed edge on these unions.
For your convenience, you can order these clips right along with the union by simply selecting it through the drop-box above.

Sytec Fuel Line One Way Valve

PRO805
Sytec Pro-Line in-line fuel filter - 8 mm

Sytec Pro-Line in-line fuel filter - 8 mm

In line fuel filter with cleanable / replaceable filter.

Suitable for 8 mm internal diameter fuel hoses.

Replacement filter elements are available HERE.

Chrome finish.

Toughened glass phial.

Suitable for system pressures of up to 10 PSI / 0.7 Bar.

Supplied with 2 Jubilee clips.

Couplings Specifications:
Fuel Unions for fuel lines with 8 mm internal diameter

Sytec Pro-Line in-line fuel filter - 8 mm

PRO896
Replacement elements for Sytec in-line fuel filter

Replacement elements for Sytec in-line fuel filter

3 replacement elements for the Sytec Pro-Line in-line fuel filter.

Come complete with new rubber seals.

These elements fit our PRO804 and PRO805 Sytec in-line fuel filters.

Suitable for system pressures of up to 10 PSI / 0.7 Bar.

 

 

 

 

Replacement elements for Sytec in-line fuel filter

jet sizer
Carburettor Jet Gauges

Carburettor Jet Gauges

Calibrated gauges to measure jet sizes.

The perfect way to determine the exact size of jets, regardless of what is indicated on them.

Sometimes jets are drilled out to requirement and / or the original indicators are removed or illegible which leaves you questioning the true size.

With these gauges, you can still determine which size these jets are.

Indispensable when working on modified carburettors!

Two different sets available:

Set 1: 20 gauges, ranging from 0,45 mm to 1,50 mm
Set 2: 16 gauges, ranging from 1,50 to 3,00 mm

Priced per set!

Carburettor Jet Gauges

JSG01
Jet size gauge 0.5 to 1.5 mm

Jet size gauge 0.5 to 1.5 mm

Jet sizing tool to measure jets between 0.5 and 1.5 mm internal diameter.

Measurements are taken by inserting the tapered needle into the jet.

The size can then directly be read from the scale.

 

 

 

Jet size gauge 0.5 to 1.5 mm

JDK01
54-Piece Jet Drill Set

54-Piece Jet Drill Set

Jet drill set comprising 50 jet drills and and 4 pin vises.

The perfect way to fine-tune any jet to suit your needs.

Also highly suited to clean clogged-up jets.

The set contains:

  • 4 pin vises to suit all drill sizes included
  • 10 drills ranging from 1,0 to 2,0 mm:
    1.0, 1.1, 1.2, 1.3, 1.5, 1.6, 1.7, 1.8, 1.9 & 2.0 mm
  • 20 drills ranging is size from 0.3 mm to 1.6 mm:
    0.3, 0.35, 0.4, 0.45, 0.50, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.2, 1.3, 1.4, 1.5 & 1.6 mm
  • 20 x drills Gauge Number 80 to 61 (0.343 to 0.991 mm / 0.0135 to 0.0390 inches )

54-Piece Jet Drill Set

JET REAMER
16-Piece Jet Reamer Set

16-Piece Jet Reamer Set

Jet reamer kit comprising 16 reamers and and a pin vise.

The perfect way to fine-tune any jet to suit your needs.

The set contains:

  • 1 pin vise to suit all reamer sizes in this set
  • 1 storage case
  • 16 reamers ranging is size from 0.33 mm to 2.00 mm:
    0.33; 0.40; 0.45; 0.50; 0.60; 0.70; 0.75; 0.80; 0.90; 1.00; 1.10; 1.20; 1.40; 1.60; 1.80; 2.00 mm

16-Piece Jet Reamer Set

G4074
Gunson Colortune See Through Spark Plug Kit

Gunson Colortune See Through Spark Plug Kit

Gunson Colortune See Through Spark Plug Kit.

The Tune-up plug for Petrol or LPG, 2 and 4 stroke engines with single, twin or multiple carburettors or fuel injection systems.

The original and best tool for seeing what's happening inside the combustion chamber of the petrol engine.

It allows you to see the combustion and to adjust the mixture by color.

Fits most petrol engines in standard form with additional adapters available for vehicles with alternative sized spark plugs.

Kit includes:

  • See-Through Spark Plug
  • Hexagonal adapter for spark plug wrench
  • Copper sealing washer
  • Extension Cord
  • Extension tube with mirror
  • Cleaning brush
  • Instructions in English

Colortune will fit most vehicles.

Extra adapter sizes available separately

Available in the following basic thread sizes:

  • 10 mm
  • 12 mm
  • 14 mm - SOLD OUT AT THE MOMENT!

For our complete offerings on Gunson Tools, please visit www.GunsonShop.com.

Gunson Colortune See Through Spark Plug Kit

Available from our Stock

DD0906
Dellorto Carburatori Sticker - Large

Dellorto Carburatori Sticker - Large

Official issue sticker / decal with the Dellorto logo and Italian flag "tricolore" colors.

Measures 9 x 3 cm (3.54 x 1.2 inches).

This is Number 1 in the photograph.

Made of high quality vinyl.

 

 

 

Dellorto Carburatori Sticker - Large

DD0909
Dellorto Carburatori Sticker - Medium

Dellorto Carburatori Sticker - Medium

Official issue sticker / decal with the Dellorto logo and Italian flag "tricolore" colors.

Measures 8 x 4 cm (3.1 x 1.55 inches).

This is Number 2 in the photograph.

Made of high quality vinyl.

 

 

 

Dellorto Carburatori Sticker - Medium

DD0905
Dellorto Carburatori Sticker - Small - Low

Dellorto Carburatori Sticker - Small - Low

Official issue sticker / decal with the Dellorto logo and Italian flag "tricolore" colors.

Measures 6 x 2 cm (2.4 x 0.8 inches).

This is Number 3 in the photograph.

Made of high quality vinyl.

 

 

 

Dellorto Carburatori Sticker - Small - Low

Patch
Dellorto Carburatori Sew-On Patch

Dellorto Carburatori Sew-On Patch

Official issue sew-on patch with the Dellorto logo and Italian flag "tricolore" colors.

Measures 12 x 6.5 cm (4.7 x 2.6 inches).

Elaborately embroidered.

 

 

Dellorto Carburatori Sew-On Patch