Parts for your 2017 Subaru Impreza-Universal joints

2017 Subaru Impreza universal joints

Based on Subaru’s 2017MY Impreza factory Service Manual (Drivetrain: Propeller Shaft) and the Subaru Genuine Parts catalogue for this model year, universal joints are used on AWD variants of the 2017 Subaru Impreza. The car runs a two‑piece propeller shaft (tailshaft) to the rear differential with sealed, non‑serviceable universal joints and a centre support bearing. Front drive axles use constant‑velocity (CV) joints, not universal joints.

On a 2017 Impreza with Symmetrical AWD, the universal joints sit at either end of the propeller shaft, allowing the shaft to transmit torque even as the angles change with suspension movement and body flex. They’re the quiet achievers that keep the driveline smooth from the transmission’s output to the rear diff, helping maintain that planted Subaru feel on wet roads, gravel, and windy Kiwi and Aussie backroads.

Because the OEM universal joints are sealed, there’s no greasing nipple and no scheduled lubrication. Subaru’s service literature specifies condition‑based maintenance: inspect during routine servicing for play or roughness, and if there’s looseness, binding or rust staining at the caps, replace the propeller shaft assembly as a unit. The U‑joints themselves aren’t sold separately by Subaru, and the shaft is balanced as an assembly, so swapping the whole tailshaft is the approved fix.

Owners should keep an ear out for early warnings:

• A light squeak at low speed that changes with road speed
• A clunk on take‑off or when shifting from drive to reverse
• A vibration or shudder under load or around 60–100 km/h that isn’t tyre‑related

During servicing, a tech will check for axial and radial play at the joints, inspect the centre support bearing, and confirm the flange bolts are torqued to spec. If replacement is needed, it’s smart to mark flange alignment, fit new self‑locking hardware, and road‑test for vibration. Aftermarket rebuildable shafts do exist, but sticking with a quality balanced assembly prevents headaches. For city commuters and weekend tourers alike, keeping those U‑joints healthy means a quieter cabin, less stress on the diff and gearbox, and fewer surprises on a long run.

Technical sources referenced: Subaru Impreza 2017MY Service Manual (Drivetrain/Propeller Shaft section: inspection and non‑disassemblable universal joint notes) and Subaru Genuine Parts catalogue notes indicating the universal joint is integral to the propeller shaft assembly.

FAQs

Does a 2017 Subaru Impreza have universal joints?
Yes—AWD models use universal joints on the propeller shaft between the transmission and the rear differential. The front axles use CV joints. This layout is confirmed in Subaru’s 2017MY Impreza Service Manual and parts listings.

Can the universal joints be greased or replaced on their own?
No. The factory joints are sealed and not designed for periodic greasing. If a joint wears out, Subaru specifies replacing the complete propeller shaft assembly. Some aftermarket options offer rebuildable shafts, but OEM practice is a full assembly swap.

What are the signs a universal joint is failing, and is it safe to keep driving?
Common signs include a speed‑related squeak, a take‑off clunk, and vibration at highway speeds. Continued driving risks further damage to the shaft, centre bearing, or diff. It’s best to have it inspected promptly and avoid long high‑speed trips until checked.