Parts for your 2009 Subaru Impreza-Driveshafts

2009 Subaru Impreza driveshafts: what they do and how to look after them

Driveshafts are absolutely relevant to the 2009 Subaru Impreza. According to the Subaru Impreza 2009 Service Manual (Driveline/Axle and Propeller Shaft sections, Subaru Technical Information System) and Subaru’s 2009 Impreza parts catalog for GE/GH/GV chassis, every Impreza uses front driveshafts (CV axle shafts). All-wheel drive (AWD) variants also run a propeller shaft from the transmission to the rear differential, plus rear CV shafts. Front-wheel drive variants, where sold, have no rear prop shaft but still have front CV shafts.

On the 2009 Impreza, driveshafts do the heavy lifting of sending torque to the wheels while allowing steering and suspension movement. The constant velocity (CV) joints at each end of the axle shafts keep power delivery smooth even at sharp steering angles. AWD models add Subaru’s longitudinal propeller shaft and rear CV axles, forming the heart of the Symmetrical AWD layout that gives the Impreza its sure-footed feel.

Routine servicing should include a quick look at the CV boots and shafts. If a boot splits, grease can fling out and water can creep in, chewing out a joint surprisingly fast. Tell-tales include grease spray inside the wheel, a rhythmic clicking on tight turns, or a shudder under load. On AWD cars, also listen for vibration on cruise and check the prop shaft’s centre support bearing and universal joints, many OE prop shafts use staked U‑joints that are not serviceable and are replaced as an assembly when worn.

When it’s time to replace, most owners go for complete CV axle assemblies rather than rebuilding individual joints—it’s quicker, often more economical, and restores fresh boots and splines. Match parts to the VIN, as left/right, manual/auto, and model variants can differ. Use quality grease-resistant boots, replace the axle nut and any staked hardware, and torque to spec with the vehicle on the ground to protect hub bearings. If the car’s been lowered or lifted, keep an eye on CV angles and boot life, as altered geometry can speed up wear.

• Inspect CV boots and shafts at each service (around 10,000–15,000 km).
• Address any clicks, clunks, or vibrations early to avoid collateral damage.
• For AWD, check the propeller shaft centre bearing and mounts during underbody inspections.

Popular questions about 2009 Subaru Impreza driveshafts

Does a 2009 Impreza have a rear driveshaft?
AWD models do—there’s a propeller shaft running to the rear diff, plus rear CV axles. FWD variants don’t have a rear prop shaft. A quick look underneath for a long shaft down the centre tunnel, or checking the build plate/spec sheet, will confirm what’s fitted.

How long do the CV shafts usually last?
With intact boots and normal use, CV shafts can run well past 150,000 km. Coastal exposure, lifted suspension, or torn boots can shorten that. Clicking on full lock, vibration on acceleration, or visible grease throw means a closer inspection is due.

Can the CV joints be re-greased, or is full replacement better?
Boot-and-grease kits can work if caught early and the joint hasn’t worn. In practice, many choose a complete axle assembly for reliability and time savings. For AWD prop shafts, the OE staked U‑joints often aren’t serviceable, so replacing the shaft assembly is the standard fix when there’s play or noise.