Parts for your 2007 Toyota Bb-Cluth slave cylinder

2007 Toyota bB cluth-slave-cylinder: is it actually used?

Short answer: a cluth-slave-cylinder (clutch slave cylinder) is not used on the 2007 Toyota bB. The 2007 bB (chassis codes QNC20/QNC21/QNC25) was factory-delivered with a 4‑speed automatic transmission only, so there’s no clutch pedal, no clutch master, and no slave cylinder to operate a pressure plate. That’s why a cluth-slave-cylinder isn’t relevant to servicing this model.

Why they’re not fitted: the automatic bB uses a torque converter and an electronically controlled transaxle (U44xE family) to handle drive engagement. Unlike a manual, it doesn’t require hydraulic actuation to disengage a clutch, so there’s simply no place for a slave cylinder in the system.

Technical sources that back this up:

• Toyota Global Service Information (TIS) – 2007 bB (QNC20/21/25) New Car Features and Repair Manual: lists only U44xE automatic transmissions and no manual clutch hydraulics.
• Toyota Electronic Parts Catalogue (EPC) for QNC20/QNC21/QNC25: no clutch master or slave cylinder assemblies are catalogued for this model.
• Japanese domestic-market 2005–2008 bB brochures/spec sheets: transmission offering is 4‑speed automatic only.
• Platform siblings (Daihatsu Coo/Subaru Dex) of the same era/spec also list 4AT only for comparable trims.

Why you might still see a “2007-toyota-bb cluth-slave-cylinder” listed online: some aftermarket catalogues roll the bB together with other Toyota boxes like the earlier bB/Scion xB or small Toyotas that did have manual options. That cross-listing can make it look like the 2007 bB takes a slave cylinder when it doesn’t.

What owners should do instead: if the goal is smooth shifting and longevity, focus on the automatic transmission service. Use the correct Toyota ATF specified for the U44xE series, check for leaks at the pan and cooler lines, and follow reasonable service intervals (more frequent fluid checks if it does short trips or city duty). If someone’s bB has been retrofitted with a manual (rare but possible in custom builds), then a slave cylinder will be part of that conversion—check the gearbox code and the conversion documentation to source the correct hydraulic parts and bleeding procedure.

Quick ID tip: count the pedals (two = automatic), check the compliance plate for a U44xE trans code, and you’ll know there’s no cluth-slave-cylinder to service on a stock 2007 Toyota bB.

• Does the 2007 Toyota bB have a clutch slave cylinder?
  It doesn’t. Factory 2007 bB models were built with a 4‑speed automatic, so there’s no manual clutch system and no slave cylinder to maintain or replace. If yours has three pedals, it’s almost certainly a custom manual conversion.
• Why do some parts sites list a cluth-slave-cylinder for my 2007 bB?
  That’s usually catalogue overlap with other Toyotas (like certain Yaris/Echo or earlier bB/Scion xB variants) that did offer manuals. The 2007 JDM bB (QNC2#) is auto-only, so those listings don’t apply to a standard car.
• How can I confirm what transmission my bB has?
  Check the build/compliance plate or VIN data for the trans code (look for U44xE). Also, a quick pedal check helps: two pedals means automatic. If a manual gearbox has been fitted, you’ll see a clutch pedal and likely an aftermarket master/slave setup.