I have just compared the China Jetta master cylinder to the old A1 cylinder.

The stock Brake Fluid Reservoir Bottle had a longer distance between 2 legs but the holes in new master cylinder is pretty close.


Figured out that the 22mm cylinder needs the’Tall version” Brake Fluid Reservoir Bottle. This bottle was using in China Jetta King & Mk3 Golf

The China part number is 1H1 611 301A (also use 1H1 611 349).


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