Parts for your 2012 Toyota Bb-Universal joints

2012 Toyota bB universal joints – are they actually used?

For the typical 2012 Toyota bB (QNC20/QNC21, front‑wheel drive), conventional driveline universal joints aren’t fitted. Toyota’s layout for this model is a transverse engine with a front transaxle and two front half‑shafts that use constant‑velocity (CV) joints, not universal joints. That means the usual “prop shaft U‑joints” you’d see on rear‑wheel drive or body‑on‑frame 4x4s don’t apply here.

This isn’t guesswork. Technical references back it up: the Toyota Electronic Parts Catalog (EPC) for bB QNC20/QNC21 lists front drive shaft assemblies with inboard and outboard CV joints, and there’s no propeller shaft section for the 2WD models. The Toyota Repair Manual for the same series covers CV joint/boot service under Drivetrain/Transaxle, and the New Car Features (NCF) material describes the bB as an FF (front‑engine, front‑wheel drive) layout. In short, there’s simply no rear differential or propeller shaft on the common 2WD bB to require U‑joints.

Worth noting: there is a small universal joint in the steering intermediate shaft on all models, but that’s a steering component, not a driveline U‑joint. It’s usually replaced as an assembly if play or binding develops.

Why universal joints aren’t used on the 2WD bB:

• Its FF drivetrain eliminates the need for a propeller shaft to the rear axle, so no driveline U‑joints are required.
• Front axles need to transmit torque while steering and moving through suspension travel, CV joints handle big angles smoothly, whereas traditional U‑joints introduce velocity variation and aren’t ideal for front drive shafts.

If the vehicle in question is the less common 4WD variant (often designated QNC25 in Toyota documentation), a propeller shaft with universal joints may be present. Check the model code on the build plate/VIN and consult the Toyota EPC for confirmation before ordering parts.

For regular servicing on a 2012 bB 2WD, the practical focus should be on the front CV joints and boots: look for split boots, grease fling inside the wheel, or clicking on full lock. Address boot damage early to avoid replacing the entire axle. If the steering feels notchy or there’s free play at centre, have a technician inspect the steering intermediate shaft U‑joint and column components per the Toyota Repair Manual.

Popular questions about 2012 Toyota bB universal joints

Does a 2012 Toyota bB have universal joints?
Most 2012 bB models in Australia and New Zealand are front‑wheel drive and do not use driveline U‑joints. They run CV joints on the front half‑shafts. There is, however, a small universal joint in the steering intermediate shaft. If the car is a 4WD variant (e.g., QNC25), it can have a propeller shaft with U‑joints—check the model code to be sure.

What should be serviced instead of driveline U‑joints on a 2WD bB?
Inspect the front CV boots and joints during routine servicing. Look for torn boots, grease spray, or clicking during tight turns. Replace damaged boots promptly to protect the CV joint, if the joint is noisy or has excessive play, a complete driveshaft assembly may be the best fix.

How do you spot a failing steering column U‑joint?
Tell‑tales include notchy or stiff steering, a “dead” spot around centre, or clunks when turning the wheel. Surface rust on the joint or binding felt during column inspection are red flags. The steering intermediate shaft is typically replaced as an assembly following the procedures in the Toyota Repair Manual.