Ive tried the search function but cant seem to find a answear hoping sombody can help but i have a 2019 octavia estate im after the h&r 40mm springs but there is like 4 options that keep appearing anybody have a part number that i can cross check at all please

Yer tiz from the H & R website:

https://www.h-r.com/en/article/?articlenr=23017-7&datasuppliernr=4311

There is also a fixed ride height front spring shown at -15mm but no fixed ride height rear spring.

Edited 18 September, 202518 Sep by SwallownAmazon

There's also Eibach Springs:

Eibach Shop

Eibach Sportline Lowering Springs (E20-15-021-05-22)

Before purchasing please check the installation notes. Reference the numbers below with the table HERE Fitting notes A,18,170,237 Eibach Sportline Lowering Springs Pure Sport Suspension Springs and...

I've assumed diesel engine.....

Yes mate 2.0tdi been reading lots of good things about h&r so kinda looking for the full kit seen they do 25mm with that added to the 15mm lower the octavia vrs is compared to standard it works out at 40mm ive heard