You are here:
WebshopVespa PX/T...Spare Part...Carburetto...Idle Jet SI DELL`ORTO 55/160
 Your Shopping Cart
Your shopping cart is empty.
calculate shipping Live! Shipping Costs Calculation
 Your Notepads
notepad icon  Please login to use the Notepads.
webshop icon All Webshop
Your Scooter
Show only articles for selected scooter.
Most Popular Articles

prev Pictures may look differentnext

Idle Jet SI DELL`ORTO 55/160

for SI 20.15 - 26.26D/H/E

On the SI carburettors, the choice of the idle jet primarily affects the lower and middle rev range. Each of the jets are marked with two numbers, the relationship between which states the actual jet size. E.g. 50/120 ? 2,4. In general, the following applies: The smaller the value the thicker the jet. And/or the bigger the calculated ratio of the idle jet, the leaner the scooter will run with moderate revs. This is important when undertaking long tours when it is necessary to drive in the difficult half throttle range for long periods.

Our range includes several DELL'ORTO idle jets from 55/100 (1.82) to 42/160 (3.81). It isn't worth penny pinching and using reproductions. Anyone who has tuned a carburettor before and wasn't able to rely on the regular sizes will know what we are talking about.


Conclusion: Seizing at half throttle? It would never have happened with the right idle jet!


SIP-TIP: The best idea is to order the carburettor cleaner (part no 550340) and gasket set (part no 920600) for the carburettor conversion.


SIP community user 'miro76' on part no 40264214:

"Good quality!" On my Vespa PX Tuning Pinasco 177, the long stroke crankshaft and geometric compression of 10.6 were too lean. I got a 2.8 ND and the thing now goes like the clappers."


SIP community user 'S.Polaniok' on part no 40265510:

"First class. superb product!"

OEM Numbers (for the purpose of comparison)  B09892.004 (MALOSSI), 0989204 02 (DELLORTO)

icon explos Spare Parts Catalogue
This article can be found in the following exploded drawings ... go Go to Exploded Drawings!
40405000 $10.36
Our Alternatives
for this item
Customers choice
might interest you...
40406000 $6.58
40250000 $18.12
40416000 $6.58
Carburettor - Spare Parts

This item is in stock in sufficient quantity.

3g / piece
Stock on hand   Amount


Pages(s) 245 to open.
Catalog Preview Page
Product forums
icon scootermodels This product fits the following models
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 160 GS (GS4) (D) 160 VSB1-2T 2T AC `62-`64 VSB1T 0029901 ->
VESPA 180 SS Super Sport 180 VSC1T 2T AC `64-`68

Legend: Quantity In Stock

This article is in stock and ready to be shipped immediately. Our warehouse is fully stocked.
This article is in stock. This item is in stock in sufficient quantity.
This article will soon be sold out. This item will be sold out soon.
This item is ordered by us especially for you. Deliverytime might take more than 3 weeks. You cannot cancel this order any more. This item needs to be ordered especially for you. The expected delivery time is about 3 weeks.
This article is currently not available but will be back in stock soon. This item is currently not available but will be back in stock soon.
This article is currently not available. This item is currently not available. You can order it nevertheless. The expected delivery time is about 3 weeks.