Parts for your 2008 Toyota Prius-Universal joints

Are universal joints used on the 2008 Toyota Prius?

For the 2008 Toyota Prius (NHW20), universal joints (U-joints) are not part of the driveline. Toyota’s technical literature describes the Prius as a front‑wheel‑drive hybrid with an integrated P112 transaxle and front drive shafts that use constant‑velocity (CV) joints, not U‑joints. See Toyota Repair Manual coverage for 2004–2009 Prius, Drivetrain/Axle – Front Drive Shaft, and the Toyota New Car Features (NCF) section on the Hybrid Transaxle (P112) and FWD layout. These sources show no propeller shaft and therefore no driveline U‑joints on this model.

What the Prius does have is an intermediate steering shaft with a small universal joint built in. That joint allows the steering column to change angle and still turn smoothly. It’s supplied as part of the steering intermediate shaft assembly rather than a separate serviceable cross‑type U‑joint, as outlined in the Steering Column/Intermediate Shaft sections of Toyota’s Repair Manual.

Why U‑joints aren’t used in the Prius driveline comes down to design and physics:

• Front‑wheel drive with no prop shaft: there’s simply nowhere a traditional U‑joint would live.
• Constant velocity requirement: CV joints maintain uniform rotational speed through large steering angles, preventing vibration and torque fluctuation. A single U‑joint would introduce speed variation at angle, which isn’t ideal for FWD steering axles.
• Hybrid transaxle packaging: the MG1/MG2 motor‑generators and planetary gearset are packaged in the front transaxle, eliminating the need for rear driveshafts and U‑joints.

Servicing recommendations for owners chasing “universal-joints” on a 2008 Prius should instead focus on the actual wear items:

• Front CV joints/boots: inspect the rubber boots at regular service intervals for splits, grease fling, or cracking. Catching a boot early can save a CV joint.
• Steering intermediate shaft: check for stiffness, corrosion, or a knock when turning the wheel off‑centre. If play or binding is present, the shaft assembly is replaced as a unit.

Bottom line: a parts listing for “universal-joints” isn’t relevant to the 2008 Prius driveline. Look to CV joints for axle concerns and the intermediate shaft assembly for any steering‑column U‑joint issues. That approach aligns with Toyota’s factory repair information and the car’s FWD hybrid architecture.

• Do 2008 Prius axles have universal joints?
  No. The front axles use CV joints (Rzeppa outer, tripod inner) rather than U‑joints. That’s the correct design for a FWD car that needs smooth power delivery while the wheels are turning at large angles.
• What should be checked instead of driveline U‑joints?
  Inspect CV boots for damage or leaks, listen for clicking during low‑speed turns (outer CV wear), and check the steering intermediate shaft for any notchiness or play.
• Can the Prius steering universal joint be replaced on its own?
  Typically, Toyota supplies the intermediate shaft as a complete assembly. If the joint is worn or seized, the assembly is replaced rather than servicing the cross by itself.