Parts for your 2019 Subaru Impreza-Universal joints

2019 Subaru Impreza universal joints: what they do and how to look after them

Yes, the 2019 Subaru Impreza (as sold in Australia and New Zealand with Subaru’s Symmetrical AWD) uses universal joints in the propeller shaft that links the transmission to the rear differential. This is backed by Subaru technical literature: the Factory Service Manual for the 2017–2019 Impreza (Drive Shaft System—Propeller Shaft, Inspection) calls for checking the universal joints for play and smooth movement, and the Subaru Electronic Parts Catalogue lists the propeller shaft assembly with staked, non-serviceable U‑joints and a centre support bearing.

On this Impreza, the universal joints sit in the AWD prop shaft and let the driveline transmit torque at slight angles as the body, engine and rear diff move relative to each other. They’re small but crucial for keeping the car smooth and quiet on the open road, and they help prevent vibration as the suspension works over bumps.

Day to day, there isn’t much the owner needs to do—they’re sealed and not greaseable—but they should be inspected during regular servicing. A good workshop will check for red dust around the caps, looseness, binding, or split boots on nearby components, and will spin the shaft by hand with the centre bearing unloaded. Typical warning signs the driver might notice include:

• A shudder or vibration on take-off or at motorway speeds
• A clunk when shifting between Reverse and Drive
• A droning or rhythmic hum that changes with road speed, not engine speed

If a universal joint is worn, Subaru’s guidance is to replace the complete propeller shaft assembly because the original U‑joints are staked in and not intended to be pressed out and serviced. That sounds pricey, but it restores balance and reliability. When replacing, the tech should mark the flanges for alignment, torque the flange bolts to spec, and re-check centre bearing preload and driveline angles. A post-repair road test to verify the vibration is gone is essential.

For peace of mind, ask your mechanic to inspect the prop shaft at major services (around 50,000–60,000 km intervals or if any vibration appears). Note that front and rear drive axles use constant-velocity (CV) joints—different parts to the prop shaft U‑joints—so diagnosis should cover the whole driveline to pinpoint the culprit.

Does a 2019 Subaru Impreza have universal joints?

AWD models do. They’re fitted to the propeller shaft between the transmission and rear differential. Subaru’s service manual specifically references inspecting the prop shaft universal joints during driveline checks. FWD-only models (not common in AU/NZ) don’t have a rear prop shaft, so no prop-shaft U‑joints.

How long do the Impreza’s universal joints usually last?

There’s no fixed interval, many last well past 150,000 km. Harsh roads, torn dust seals nearby, or corrosion can shorten life. Because they’re sealed, the key is periodic inspection for play or roughness and prompt replacement of the prop shaft assembly if wear is found.

What are the symptoms of a failing universal joint on this model?

Common signs are a vibration under load or at steady motorway speeds, a clunk when selecting Drive/Reverse, and a rhythmic droning that follows road speed. If those appear, have the driveline checked—techs will examine the U‑joints, centre support bearing, and rear diff mounts to isolate the cause.