Parts for your 2004 Toyota Ist-Universal joints

Are universal joints used on a 2004 Toyota ist?

Short answer: on most 2004 Toyota ist models (the common 2WD/FF versions), universal joints aren’t fitted. Toyota’s own technical references back this up: the Toyota Electronic Parts Catalogue (EPC) for NCP60/NCP61 2WD ist lists only front drive shafts using inboard and outboard constant velocity (CV) joints and shows no propeller shaft or universal joints. Likewise, service literature for the mechanically similar Scion xA (US-market ist) describes CV-jointed front axles only. However, the Japan-market 4WD ist (model code NCP65) does have a propeller shaft to the rear differential, and the EPC for that model shows universal joints at the shaft ends.

Why universal joints aren’t used on the typical 2WD ist comes down to drivetrain layout and geometry. The ist is a front-wheel drive hatch running transversely mounted engine and gearbox, so drive is sent directly to the front wheels via short half-shafts. At the steering and suspension angles seen on front hubs, CV joints are preferred because they transmit rotation at constant speed even at large angles, keeping vibration low and steering feel smooth. Traditional universal (Hooke) joints introduce speed fluctuation as angle increases, which is fine for a straight-running propeller shaft but not ideal for articulated front hubs. Hence Toyota specifies CVs up front and, on 2WD cars, there’s no rear prop shaft at all—so no universal joints.

• 2WD (NCP60/NCP61): CV joints only, no universal joints fitted.
• 4WD (NCP65): Includes a rear propeller shaft with universal joints.

If an owner is unsure which they have, the build plate/model code helps, and a quick underbody glance will too: a 4WD ist has a prop shaft running down the tunnel to a rear diff, a 2WD ist doesn’t.

Popular questions about 2004 Toyota ist universal joints

Does my 2004 Toyota ist have universal joints?
Most 2WD models don’t. They use CV joints on the front drive shafts and have no rear propeller shaft. Only the 4WD variant (often coded NCP65) has a prop shaft with universal joints. A look underneath—no shaft to a rear diff means no universal joints.

How can I tell if my ist is 4WD at home?
Check for a rear differential and a propeller shaft running from the gearbox area to the rear—if it’s there, it’s 4WD. You can also confirm the model code on the build plate, many NCP65 cars are 4WD. Owner’s manuals and Toyota dealer records can verify it as well.

I’m hearing clicks on turns—are those universal joints?
On a 2WD ist, clicking on tight turns is almost always a worn outer CV joint, not a universal joint. Look for torn CV boots and sling grease. On 4WD cars, clunks on take-up could be prop shaft U-joints, but turning-clicks still point to CVs at the front.