12006AD230 Subaru PISTON SET,OS,0.25, Price: 52.37$, Weight: 0.56kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
12006AD230 |
PISTON SET,OS,0.25 |
30 |
0.56 |
2-3 |
52.37$ |
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 |
Premium Oversize 0.25 Piston Kit for Subaru Boxer
This OE-quality engine piston set is made for a clean rebuild when the cylinders are worn or scored. Oversize 0.25 means the block is bored and honed 0.25 mm larger, giving a fresh round surface and restoring factory compression, oil control, and quiet running. Perfect for high-mileage Subaru boxer engines needing a precise refresh.
Why you need it
Loss of power, blue exhaust smoke, high oil use, cold-start rattle, and low compression tests point to piston and ring wear. Installing a matched oversize set brings back tight clearances and stable combustion.
How it works ⚙️
The piston rides the cylinder, guided by the pin and rod. Sealing rings hold compression, scrape oil, and transfer heat. Correct skirt profile and coating reduce friction and slap, keeping the boxer smooth.
What happens if it is damaged ❗
Cracked skirts, stuck rings, or worn grooves cause blow-by, detonation, oil burning, bearing stress, and metal in the oil. Ignoring it risks full engine failure.
Key details ✅
- Precisely sized 0.25 mm oversize
- Lightweight alloy, coated skirts
- Matched rings and hardened pins
- For bored/honed blocks; check clearances
Compatibility
- Legacy
- Impreza
- Forester