Parts for your 2017 Subaru Exiga-Thrust bearing

2017 Subaru Exiga thrust-bearing

Yes, a thrust-bearing is relevant to the 2017 Subaru Exiga. Technical documentation for Subaru’s FB-series engines confirms the crankshaft uses an integrated thrust-bearing surface within the main bearing set to control end-float. Subaru parts catalogues list graded main bearings with thrust faces for the FB25 used in the Exiga, and the factory Service Manual specifies crankshaft end-play checks against thrust-bearing limits. While the 2017 Exiga’s Lineartronic CVT (TR690 family) doesn’t use a manual clutch release/throwout bearing, the engine’s thrust-bearing is very much a thing—just not a routine service item.

What does it do? The thrust-bearing keeps the crankshaft from shuffling back and forth under axial loads—think torque converter and accessory belt forces—so timing, oil pump engagement, and seal integrity stay happy. When it’s healthy, you’ll never notice it. When it’s not, you can end up with excessive end-float, oil leaks at the front or rear seal, or odd noises at idle.

Day-to-day servicing doesn’t include replacing the thrust-bearing. It sits inside the block as part of the main bearings, so it’s only touched during an engine rebuild or when diagnosing end-float concerns. Keeping good oil up to it is the best defence: correct viscosity, changed on time, and a decent filter. That aligns with Subaru’s service guidance for FB engines and helps maintain the hydrodynamic film the bearings live on.

• Watch for signs: metallic glitter in oil, a crank pulley that visually “walks”, unusual idle noises that change with A/C load, or trouble maintaining idle. Any of these warrant a professional check of crankshaft end-play with a dial gauge.
• If end-float is out of spec: engine removal and strip-down are required. A qualified technician will inspect the crank thrust faces, select the correct graded main bearings (per Subaru spec), verify journal clearances, and reassemble to torque/angle specs using assembly lube.
• Preventive tips: stick to scheduled oil services, avoid over-tensioning the accessory belt, and address any detonation or misfire early—shock loads aren’t kind to bearings.

Bottom line for a 2017 Exiga owner: there is a thrust-bearing, but it’s internal and long-lived under proper maintenance. Treat oil changes as non-negotiable, and if there’s ever a hint of crank end-float issues, get a specialist to measure and advise before damage snowballs.

Popular questions about 2017 Subaru Exiga thrust-bearing

Does the 2017 Subaru Exiga actually have a thrust-bearing?
Yes. The FB25 boxer engine uses an integrated crankshaft thrust-bearing within the main bearings to control axial movement. The car’s CVT means there’s no separate clutch release (throwout) bearing, but the engine thrust-bearing is present and essential.

Is thrust-bearing replacement part of regular servicing?
No. It’s an internal engine component, only addressed during an engine rebuild or when end-float is out of spec. Regular servicing focuses on oil quality and intervals to protect the bearing surfaces.

What symptoms suggest a thrust-bearing problem?
Possible signs include noticeable crank pulley fore–aft movement, metallic debris in oil, idle noises that change with accessory load, and oil leaks at front or rear main seals. A workshop can confirm by measuring crankshaft end-play against Subaru specifications.