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for TA 17/TA 17A/TA 17B/TA 18C
/TA 18D/TA 18E
(main jet)

The main jet found in all carburettors controls the amount of fuel present in the fuel/air mix, prior to combustion. Adjustment and tuning upgrades require modern, precisely manufactured replacement jets for an accurate and effective result. The inaccurately produced reproduction jets that are currently on the market do not represent a viable alternative for what are essential carburettor components.

To alleviate this situation we have decided to have our own range of SIP labelled main jets produced by KOSO with the usual precision and fine tolerances we have come to expect from this high-tech manufacturer, for perfect jetting results!

If you have ever been re-jetting a carburettor and discovered to your horror that the actual size of the jets used does not correspond with the values on their flanks you will know how time-consuming and frustrating this can be!

If '75' is stamped on the jet, then it had better be a '75' sized jet! Otherwise this 'suck it and see' process can quickly become a complete waste of your time!

The grades on these jets increase in steps of 2, 3 or 5 intervals. Simply enter the size of the specific jet you require while ordering with their overall article No. (#40290).


Conclusion : The finest production quality, reliable and accurate precision, perfect value-for-money and guaranteed availability.

icon explos Spare Parts Catalogue
This article can be found in the following exploded drawings ... go Go to Exploded Drawings!
92978500 $6.43
23904800 $142.05
40528000 $8.48

0g / piece
Stock on hand   Amount
Est. date of delivery 12/30/2016
Daily arrival expected.

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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 98 98 V.98 2T AC `46-`47
VESPA 125 125 VM1-2T 2T AC `52-`54
VESPA 125 125 V30-33 2T AC `51-`53
VESPA 125 125 V1-15T 2T AC `48-`50
VESPA 125 125 VN1-2T 2T AC `54-`57
VESPA 125 ACMA 125 2T AC `51-`55 V54-56
VESPA 150 (T1/150) (D) 150 VL1T 2T AC `55
VESPA Modell "U" 125 VU1T 2T AC `53

Legend: Quantity In Stock

This article is in stock and ready to be shipped immediately. Our warehouse is fully stocked.
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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.
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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.