12018AB550 Subaru PISTON SET LH OS0.25, Price: 42.28$, Weight: 0.477kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
12018AB550 |
PISTON SET LH OS0.25 |
78 |
0.477 |
2-3 |
42.28$ |
Originals
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Subaru |
PISTON SET LH OS0.25
|
1 |
0.549
|
|
48.43$
|
Compatibility
| Body | Engine | Vehicle Grade | Market | Model Year From | Train | Gearbox | Diagram |
|---|---|---|---|---|---|---|---|
| XUV(CROSSOVER 7) | 2.5L EMPI DOHC NA | X-BREAK | Japan | 02.2017 | ﾌﾙﾀｲﾑ4ﾘﾝｸﾄﾞｳ | ﾄﾙｸｺﾝﾊﾞｰﾀｼｷｼﾞﾄﾞｳﾑﾀﾞﾝﾍﾝｿｸｷ | View |
| Body | Engine | Vehicle Grade | Market | Model Year From | Model Year To | Train | Diagram |
|---|---|---|---|---|---|---|---|
| WAGON | 2500CC EMPI DOHC NA | X LTD PLUS | USA | 05.2011 | 11.2012 | FULLTIME 4WD | View |
| Body | Engine | Vehicle Grade | Market | Model Year From | Model Year To | Train | Diagram |
|---|---|---|---|---|---|---|---|
| OUTBACK | 2500CC EMPI DOHC NA | 25I-PLUS | USA | 03.2013 | 05.2014 | FULLTIME 4WD | View |
LH 0.25 Oversize Piston Set for Subaru Boxer Engines ?
Restore compression and smooth power with this left‑hand bank 0.25 mm oversize piston set. Designed for re-bored cylinders, it brings factory sealing back to high-mileage Subaru flat engines. The matched aluminum piston, coated skirt, wrist pin, locks, and ring pack ensure quiet operation, low friction, and long life. Perfect for rebuilds after bore wear, scuffing, or detonation marks ?.
Why you need it ✅
When the cylinder wears, a standard piston can’t seal. An oversize 0.25 mm piston pairs with a precision-honed bore to restore clearances, raise compression, cut oil burn, and stabilize idle. It’s the correct fix after machining on the LH bank.
How it works ?
The piston shuttles in the cylinder, compressing the air‑fuel mix. Top compression rings seal gases, the oil control ring scrapes excess oil, and the crown transfers heat to the cylinder walls. Balanced mass keeps the boxer layout smooth and reliable.
If it’s worn or broken ⚠️
Expect low compression, hard starts, misfire, blue smoke, high oil use, piston slap, and metal debris. Continued driving can score the bore, damage the catalyst, and lead to catastrophic engine failure.
Compatibility
- Forester
- Legacy
- Exiga