12006AD230 Subaru PISTON SET,OS,0.25, Price: 61.06$, Weight: 0.56kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
12006AD230 |
PISTON SET,OS,0.25 |
23 |
0.56 |
|
61.06$ |
Originals
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Subaru |
PISTON SET,OS,0.25
|
30 |
0.644
|
2-3
|
52.37$
|
Compatibility
| Body | Engine | Vehicle Grade | Market | Model Year From | Model Year To | Train | Diagram |
|---|---|---|---|---|---|---|---|
| WAGON | 2500CC EMPI DOHC TURBO | XT LTD PLUS | USA | 05.2011 | 11.2012 | FULLTIME 4WD | View |
| Body | Engine | Vehicle Grade | Market | Model Year From | Model Year To | Suspension | Diagram |
|---|---|---|---|---|---|---|---|
| WAGON | 2500CC EMPI DOHC TURBO | WRX | USA | 04.2005 | 06.2007 | NORMAL SUSPENSION | View |
| Body | Engine | Vehicle Grade | Market | Model Year From | Model Year To | Train | Diagram |
|---|---|---|---|---|---|---|---|
| WAGON OUTBACK | 2500CC EMPI DOHC TURBO | 25XT LIMITED | USA | 03.2008 | 04.2009 | FULLTIME 4WD | View |
Oversize 0.25 Piston Set for Subaru Boxer Engines
Why you need it
During an engine rebuild, cylinders are often honed or bored to clean out wear. This 0.25 mm oversize piston set restores factory compression, oil control, and quiet running. It’s the right choice when standard pistons no longer meet clearance specs, helping your Subaru run smooth, clean, and strong .
How it works
The piston travels up and down, compressing the air‑fuel mix and transferring combustion force to the crank. Precision ring lands keep the rings stable for a tight seal; coated skirts reduce friction and scuffing; the wrist pin centers the load and allows free pivot. Correct clearances maintain oil film, heat transfer, and quiet operation ️.
What happens if it’s worn or damaged
Expect hard starts, low power, blow‑by, blue smoke, rising oil use, and piston slap. Over time you may see ring land cracking, scuffed skirts, overheating, and even cylinder damage. Ignoring it risks seizure and costly block work ⚠️.
Tech notes
Bore/hone to match 0.25 oversize, measure every cylinder, set ring end gaps, verify piston‑to‑wall and pin clearances, and torque to spec. Always pair with new rings and pins.
Compatibility
- Legacy
- Impreza
- Forester