Dellorto DHLA Parts
Dellorto DHLA Parts

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

Click HERE for an exploded view drawing of the DHLA. The numbers in the drawing correspond to the numbers in brackets at the beginning of the article description.

!
DHLA A/C GASKET

Dellorto DHLA 40 Air Cleaner Gasket

Air filter gasket for the Dellorto DHLA40.

This gasket is placed in between the carburettor and the aircleaner housing.

Required number per carburettor: 1

Also fits the Weber DCOE40.

DHLA A/C GASKET45-48

Dellorto DHLA 45 & 48 Air Cleaner Gasket

Air filter gasket for the Dellorto DHLA40.

This gasket is placed in between the carburettor and the aircleaner housing.

Required number per carburettor: 1

Also fits the Weber DCOE45 & DCOE 48.

8383

(2) Choke for Dellorto DHLA 40

Please note that these chokes are only available on special order and consequently have a 1 week lead time.

Main choke for the Dellorto DHLA40.

Available in the following sizes:

  • 25 mm
  • 26 mm
  • 28 mm
  • 29 mm
  • 30 mm
  • 31 mm
  • 32 mm
  • 33 mm
  • 34 mm
  • 35 mm
  • 36 mm
  • 37 mm

Required number per carburettor: 2

This is item # 2 in the drawing.

7848

(3) Auxiliary Venturi for Dellorto DHLA

Please note that these venturis are only available on special order and consequently have a 1 week lead time.

Auxiliary Venturi for the Dellorto DHLA.

Available in type 1, 2, 3 & 4.

Required number per carburettor: 2

This is item # 3 in the drawing.

7484

(5) Main jet for Dellorto DHLA

Main jet for the Dellorto DHLA series carburettors.

Available in sizes 105 - 142.

Original Dellorto.

These are all genuine Dellorto jets which have been flow tested at the factory and can be recognized by the diamond-shaped "Inc" logo.

Beware of cheap imitations which can have an incorrect flow rate!

Required number per carburettor: 2

This is item # 5 in the drawing.

7644

(6) Idle Jet for Dellorto DHLA

Idle jet for the Dellorto DHLA series carburettors.

Available in sizes 48 - 52.

Required number per carburettor: 2

This is item # 6 in the drawing.

8391

(6) Long Idle Jet for early Dellorto DHLA

Long idle jet as found in early Dellorto DHLA series carburettors like used by Alfa Romeo and Lotus.

Available in sizes 48 - 52.

Required number per carburettor: 2

This is item # 6 in the drawing.

7851

(7) Pump Jet for Dellorto DHLA

Pump jet for the Dellorto DHLA series carburettors.

Available in sizes 33 - 45.

Required number per carburettor: 2

This is item # 7 in the drawing.

3315.70

(8) Starter Jet for Dellorto DHLA

Starter jet for the Dellorto DHLA series carburettors.

Available in size 70.

Required number per carburettor: 1

This is item # 8 in the drawing.

7772

(9) Emulsion tube for Dellorto DHLA

Newly arrived Dellorto Carburettor Parts and Service Kits

Main emulsion tube for the Dellorto DHLA series carburettors.

Available in sizes 5, 6 & 11.

Required number per carburettor: 2

This is item # 9 in the drawing.

7485

(11) Air Corrector Jet for Dellorto DHLA

Air corrector jet for the Dellorto DHLA series carburettors.

Available in sizes 170, 180, 200 & 210.

Required number per carburettor: 2

This is item # 11 in the drawing.

8809

(13) Genuine Dellorto DHLA Needle Valve

Dellorto DHLA needle valve, seat & aluminium washer.

Genuine Dellorto part, Viton-tipped!

Beware of cheap imitations so check for the diamond shaped "Inc" logo!

Available in sizes 150, 170 & 200.

Required number per carburettor: 1

This is item # 13 in the drawing.

7481

(14) Throttle Butterfly Disc for Dellorto DHLA40

Throttle Butterfly Disc for the Dellorto DHLA 40.

Available in versions 7481.1 & 7481.3.

This butterfly valve is being supplied with 2 new valve screws. When replacing or refitting your valve, ALWAYS renew these screws and peen them after your are satisfied with the valve adjustment. NEVER re-use old screws!

The screws are also available loose and are listed under # 84 on this page.

Required number per carburettor: 2

This is item # 14 in the drawing.

8010

(14) Throttle Butterfly Disc for Dellorto DHLA 45

Throttle Butterfly Disc for Dellorto DHLA 45.

Only available in version 8010.1. This is the version with grooves for the progression holes. If the grooves are not required, you can simply fit the disc in the opposite way.

This butterfly valve is being supplied with 2 new valve screws. When replacing or refitting your valve, ALWAYS renew these screws and peen them after your are satisfied with the valve adjustment. NEVER re-use old screws!

The screws are also available loose and are listed under # 84 on this page.

Required number per carburettor: 2

This is item # 14 in the drawing.

8563

(14) Throttle Butterfly Disc for Dellorto DHLA 48

Throttle Butterfly Disc for the Dellorto DHLA48.

Available in versions 8563.1 & 8563.3.

This butterfly valve is being supplied with 2 new valve screws. When replacing or refitting your valve, ALWAYS renew these screws and peen them after your are satisfied with the valve adjustment. NEVER re-use old screws!

The screws are also available loose and are listed under # 84 on this page.

Required number per carburettor: 2

This is item # 14 in the drawing.

7298

(15) Float Assembly for Dellorto DHLA

Float Assembly Dellorto DHLA series carburettors.

Available in versions 7298.1 (8.5 gramms) & 7298.3 (7 gramms).

Always replce your old float with the same version. Experimenting with other float configurations is NOT advised.

Required number per carburettor: 1

This is item # 15 in the drawing.

7501a

(16) Choke Piston Cover Nut for Dellorto DHLA

Choke Piston Cover Nut for Dellorto DHLA.

Required number per carburettor: 1

This is item # 16 in the drawing.

 

7413

(17) Choke Piston Spring for Dellorto DHLA

Choke Piston Spring for Dellorto DHLA.

Required number per carburettor: 1

This is item # 17 in the drawing.

 

7548

(18) Choke Piston for Dellorto DHLA

Choke Piston for Dellorto DHLA.

Please note:
There are 2 different versions of this piston which are NOT interchangeable!
The available version measures 28.6 mm in height and 14 mm in maximum diameter.
The other version is no longer available.

Required number per carburettor: 1

This is item # 18 in the drawing.

6434

(19) Choke Cable Clamp Screw for Dellorto DHLA

Choke Cable Clamp Screw for Dellorto DHLA.

Required number per pair of carburettors: 1

This is item # 19 in the drawing.

 

7488

(20) Choke Cable Clamp for Dellorto DHLA

Choke Cable Clamp for Dellorto DHLA.

Required number per pair of carburettors: 1

This is item # 20 in the drawing.

 

9358

(22) Top Casting Gasket for Dellorto DHLA - Standard

Top Casting Gasket for Dellorto DHLA - Standard.

For normal applications (street use), use this gasket.

For motorsport applications, use gasket # 9220.

This gasket is also part of the service kits.

Required number per carburettor: 1

This is item # 22 in the drawing.

9220

(22) Top Casting Gasket for Dellorto DHLA - Anti Fuel-Surge

Top Casting Gasket for Dellorto DHLA - Standard.

For motorsport applications where fuel surge occurs, use this gasket.

For normal applications (street use), use gasket # 9358.

This gasket is also part of the service kits.

Required number per carburettor: 1

This is item # 22 in the drawing.

9498
(23) Needle Valve Filter for Dellorto DHLA

(23) Needle Valve Filter for Dellorto DHLA

Unfortunately, this part is no longer available.

7530

(24) Jet Cover Screw for Dellorto DHLA

Jet Cover Screw for Dellorto DHLA series carburettors.

Required number per carburettor: 2

This is item # 24 in the drawing.

 

7549

(25) Jet Cover for Dellorto DHLA

Jet Cover for Dellorto DHLA series carburettors.

This is the black plastic version.

Please note that the earlier white plastic and metal versions are no longer available.

Required number per carburettor: 1

This is item # 25 in the drawing.

14231

(26) Top Casing Screw for Dellorto DHLA

Screw for, amongst others, the top casting of the Dellorto DHLA series carburettors.

Required number per carburettor: 4

This is item # 26 in the drawing.

 

4997

(27) Spring Washer for Dellorto DHLA

Spring washer for, amongst others, the top casting of the Dellorto DHLA series carburettors.

Required number per carburettor: 4

This is item # 27 in the drawing.

 

7511

(28) Jet Cover Gasket for Dellorto DHLA

Jet Cover Gasket for Dellorto DHLA series carburettors.

This gasket is also part of the service kit.

Required number per carburettor: 1

This is item # 28 in the drawing.

7062

(29) Choke Cable Bolt for Dellorto DHLA

Special, hollow & cross-drilled, choke cable bolt for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 29 in the drawing.

 

 

6850

(30) Choke Cable Washer for Dellorto DHLA

Choke Cable Washer for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 30 in the drawing.

 

6432

(31) Choke Cable Nut for Dellorto DHLA

Special shape choke cable nut for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 31 in the drawing.

 

7854

(32) Choke Return Spring for Dellorto DHLA

Choke Return Spring for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 32 in the drawing.

 

7838

(33) Choke return spring cup washer for Dellorto DHLA

Choke return spring cup washer for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 33 in the drawing.

 

4957

(34) Spring washer for Dellorto DHLA

Spring washer for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 34 in the drawing.

 

2906

(35) Choke Nut for Dellorto DHLA

Choke nut for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 35 in the drawing.

 

7837

(37) Choke actuator cam / spindle spring washer for Dellorto DHLA

Choke actuator cam / spindle spring washer for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 37 in the drawing.

7341

(39) Choke actuating lever for Dellorto DHLA

Choke actuating lever for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 39 in the drawing.

 

6425

(40) Needle valve washer for Dellorto DHLA

Needle valve washer for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 40 in the drawing.

 

7503

(41) Float pivot pin for Dellorto DHLA

Float pivot pin for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 41 in the drawing.

 

7663

(42) Fuel banjo fibre washer - inner - for Dellorto DHLA

Fuel banjo fibre washer - inner - for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 42 in the drawing.

 

7660

(43) DHLA Fuel banjo - Single - for Dellorto DHLA

DHLA Fuel banjo - Single - for Dellorto DHLA series carburettors.

Required number per set of carburettors: 1

This is item # 43 in the drawing.

 

7661

(44) DHLA Fuel banjo - T piece - for Dellorto DHLA

DHLA Fuel banjo - T piece - for Dellorto DHLA series carburettors.

Required number per set of carburettors: 1

This is item # 44 in the drawing.

 

1419

(45) Fuel banjo filter for Dellorto DHLA

Fuel banjo filter for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 45 in the drawing.

 

7662

(46) Fuel banjo fibre washer - outer - for Dellorto DHLA

Fuel banjo fibre washer - outer - for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 46 in the drawing.

 

7659

(47) Fuel banjo bolt for Dellorto DHLA

Fuel banjo bolt for Dellorto DHLA series carburettors.

Required number per carburettor: 1

This is item # 47 in the drawing.

 

7540

(48) O ring for Dellorto DHLA

Viton O-ring for the idle emulsion tube of the Dellorto DHLA series carburettors.

This oring is also part of the service kit.

Required number per carburettor: 2

This is item # 48 in the drawing.

9569

(49) 8 mm pump weight cap screw for Dellorto DHLA

8 mm pump weight cap screw for Dellorto DHLA series carburettors.

Please note that there are two versions of this cap.
This versions measures 8mm across the thread; the other measures 6mm.

Required number per carburettor: 2

This is item # 49 in the drawing.

7513

(49) 6 mm pump weight cap screw for Dellorto DHLA

6 mm pump weight cap screw for Dellorto DHLA series carburettors.

Please note that there are two versions of this cap.
This versions measures 6mm across the thread; the other measures 8mm.

Required number per carburettor: 2

This is item # 49 in the drawing.

9337

(50) Pump jet weight for Dellorto DHLA *Discontinued*

*Discontinued*

Pump jet weight for Dellorto DHLA series carburettors.

Please note that there are in total three versions of this weight of which (unfortunately!) only 1 is still available.

This particular version is no longer available but has been listed for reference purposes only!

Required number per carburettor: 2

This is item # 50 in the drawing.

We do supply the spring that belongs to this weight. You can find it under # 106 on this page.

9570

(50) Pump jet weight for Dellorto DHLA *Discontinued*

*Discontinued*

Pump jet weight for Dellorto DHLA series carburettors.

Please note that there are in total three versions of this weight of which (unfortunately!) only 1 is still available.

This particular version is no longer available but has been listed for reference purposes only!

Required number per carburettor: 2

This is item # 50 in the drawing.

We do supply the spring that belongs to this weight. You can find it under # 106 on this page.

7525

(50) Pump jet weight for Dellorto DHLA

Pump jet weight for Dellorto DHLA series carburettors.

Please note that there are in total three versions of this weight of which (unfortunately!) only 1 is still available.

This particular version IS available!

Required number per carburettor: 2

This is item # 50 in the drawing.

6415

(51) Pump jet ball bearing for Dellorto DHLA

Pump jet ball bearing for Dellorto DHLA series carburettors.

Ball bearing of the correct weight & seize for the pump mechanism.

Required number per carburettor: 2

This is item # 51 in the drawing.

10748

(53) Pump jet filter for Dellorto DHLA

Pump jet filter for Dellorto DHLA series carburettors.

Please note that these filters look like a spring but are in acual fact fine-partical filters.

They are not standard equipment to all DHLA's but they can be fitted to all, which is recommended when you are encountering problems with not 100% clean gasoline / petrol and your pump jets clogging up.

They simply drop into the pump jets before fitting the plug.

Required number per carburettor: 2

This is item # 53 in the drawing.

9335

(60) Mixture screw for Dellorto DHLA G

Mixture screw for Dellorto DHLA G series carburettors.

Please note that there different screws for the different versions of DHLA.

This particular screw fits the DHLA40 G ONLY !

You can find this reference on the left hand gas tube of your carb where "DHLA40" is cast-in, followed by a letter. If this letter is a "G", this is the correct screw.

Required number per carburettor: 2

This is item # 60 in the drawing.

9656

(60) Mixture screw for Dellorto DHLA H / DHLA 45 & 48 / DRLA

Mixture screw for Dellorto DHLA H / DHLA 45 & 48 / DRLA series carburettors.

Please note that there different screws for the different versions of DHLA.

This particular screw fits the DHLA H / DHLA 45 & 48 / DRLA ONLY !

These are the versions with the mixture screws in "towers".

Required number per carburettor: 2

This is item # 60 in the drawing.

9336

(61) Mixture screw spring for 9656 / 9335

Mixture screw spring for suitable for mixture screws 9656 & 9335 .

Please note that this spring is only suitable for these screws.

Required number per carburettor: 2

This is item # 61 in the drawing.

8260

(62) Mixture screw spring washer for Dellorto DHLA

Washer that keeps the micture screw spring in place on the Dellorto DHLA series carburettors.

Required number per carburettor: 2

This is item # 62 in the drawing.

 

7490

(70) Spindle bearing for Dellorto DHLA

Spindle bearing for Dellorto DHLA series carburettors.

Required number per carburettor: 2

This is item # 70 in the drawing.

 

6416

(84) Butterfly screw for Dellorto DHLA

Butterfly screw for Dellorto DHLA series carburettors.

When repcing your butterfly valvles, ALWAYS use new screws, use a locking agent AND peen them to secure them in place.

NEVER re-use old screws!

Required number per carburettor: 4

This is item # 84 in the drawing.

8543

(106) Pump jet weight spring for Dellorto DHLA

Pump jet weight spring for Dellorto DHLA series carburettors.

Please note that this spring is NOT shown on the exploded view drawing!

Required number per carburettor: 2

 

powertune
Dellorto & Weber Power tuning guide

Dellorto & Weber Power tuning guide

Newly arrived Dellorto Carburettor Parts and Service Kits

New Speedpro "How to power tune Weber DCOE & DellOrto DHLA carburettors" by Des Hammill.

128 pages covering:

  • Stripdown and inspection
  • Rebuilding
  • Fuel management, air filters & ram tubes (trumpets)
  • Choosing jet and choke sizes for your engine
  • Manifold preparation and carburettor fitting
  • Testing and set up
  • Testing and problem solving
  • Jetting examples

The only book you'll need for sidedraft Weber and Dellorto carbs.

This is the Third and Latest edition of the book in full colour.