12006AD671 Subaru PISTON SET OS0.25, Price: 29.53$, Weight: 1kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
12006AD671 |
PISTON SET OS0.25 |
0 |
1 |
7-10 |
29.53$ |
| Not Available | ||||||
Originals
Substitutions
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Subaru |
12006AD670
|
PISTON SET OS0.25
|
0 |
0.5
|
-
|
32.94$
|
Not Available |
Compatibility
Oversize 0.25 Engine Piston Kit for Subaru Boxer 🔧
Restore lost power and compression with a precise 0.25 mm oversize piston kit. It is used after cylinder re-bore or honing when factory walls are worn or scored. The slightly larger diameter brings piston-to-wall clearance back to spec, stopping blow‑by and piston slap. Ideal for high‑mileage rebuilds or engines that suffered overheating or detonation.
How it works ⚙️
The piston converts combustion pressure into linear motion, driving the connecting rod and crankshaft. Tight ring sealing keeps compression in the chamber and oil out. Correct skirt profile controls thermal expansion, while the wrist pin lets the piston pivot smoothly at high RPM. With the right clearance, the engine runs quiet, cool, and efficient.
Why you need it ✅
Use this size when a machine shop confirms wear beyond standard but within first repair. It restores compression, reduces oil use, and stabilizes idle. Expect cleaner exhaust, faster starts, and better torque.
What happens if it’s worn or broken ❗
Low compression, blue smoke, high fuel use, rattling on cold start, overheating, and possible cylinder or bearing damage. Ignoring it risks a full engine failure.
Install notes 🧰
Measure bores, finish-hone to spec, set ring end gaps, and verify piston orientation and pin clips. Always pair with fresh rings and bearings; recheck ECU knock control after break‑in.
Compatibility
- Legacy
- Tribeca