SZ135-19P02 Air Spring — AL-KO Full Air OE Replacement (ASL4088N)

A Contitech OE sleeve air spring with internal bump stop, found on AL-KO full air suspension systems. Supplied as a complete assembly.
 
This spring carries the SZ135-19 marking on the rubber bellow but is a distinct variant — the internal bump stop prevents the spring compressing beyond a set point and is the key differentiating feature from the standard SZ135-19. If you have identified your spring as SZ135-19 on an AL-KO full air system, this is likely the correct replacement.
 
If you are unsure whether your spring has an internal bump stop, or which variant is correct for your application, please contact our team before ordering.
 
Key cross-references: Contitech SZ135-19P02 | AL-KO 1560121 | OnAir ASL4088N
 
Air connector: 4mm push-fit Construction: Sleeve type — complete assembly, internal bump stop Application: AL-KO full air suspension systems Supplied as: Contitech OEM (ASL4088N)
 
Always verify your existing part number before ordering. Contact our team if you are unsure whether this is the correct replacement for your application.