Main nozzle

BMW Isetta engine

Main nozzle

€6.90

incl. 19% VAT plus shipping

in the accelerator pump, no. 125, new
Technical data
Category
BMW Isetta engine
Item number
1-1138
Condition
Reproduced new part
Weight
0 kg
In stock

No instant purchase: after your request you will receive a personal quote including shipping costs.

Philipp Schäper
Philipp Schäper BMW Isetta specialist Question about this item?
In stock Almost all parts available directly from stock
Original parts Original parts from workshop inventory
Specialists The specialists for BMW Isetta, 600 & 700
Worldwide shipping By DHL, UPS or freight forwarder — safely packed
Application

A main jet in the accelerator pump meters the additional fuel injected during sudden acceleration to ensure smooth acceleration without a power dip.

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General information about this item

Product info
The new 125 main jet for the accelerator pump (Part No. 1-1138) optimizes the additional fuel supply during acceleration in the BMW Isetta carburetor, ensuring smooth throttle response. As part of a restoration, it replaces worn or clogged original jets and helps eliminate acceleration hesitations and jerking. Installation should always be combined with a thorough carburetor cleaning and subsequent adjustment work.

Database ID: 690 Accessed on: 17.06.2026 17:23 Data state: 22.05.2026 12:33 In stock since: 18.11.2025