Reconditioned SEAT Leon 2.0 TSI Gearbox

CCZB, CULC or CJXA: which engine code determines which gearbox on the Leon 2.0 TSI?

On the Leon 2.0 TSI from 2006 to 2020, three engine codes coexist and each was paired with different transmissions. The CCZB (200 hp, fitted to the Mk2 and Mk3 Cupra generations) is paired with the DSG 6 wet dual-clutch gearbox. The CJXA (280 hp, Leon Mk3 Cupra from 2014) also receives a DSG 6, but in a reinforced version designed to handle the higher torque. The CULC covers more road-oriented variants and can be paired with a 6-speed manual gearbox. Using the engine code stamped on the block — rather than the engine capacity or quoted power output alone — is therefore essential for identifying the correct reference.

DSG 6 on the 2.0 TSI: an important point regarding the mechatronic unit

The DSG 6 (wet dual-clutch gearbox, DQ250 family) is known for mechatronic module failures that are distinct from internal mechanical failures. The gearbox offered here is sold without the mechatronic unit, with a new dual-clutch. If your diagnostic points to the mechatronic unit, that is a separate part. For the 6-speed manual, references vary according to power output and year of manufacture; gearbox codes QSR, SGD, KPA, RHP and SYS, among others, are not interchangeable between engine codes — always check the code stamped on the gearbox casing before placing an order.