12006AD671 Subaru PISTON SET OS0.25, Price: 35.20$, Weight: 1kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
12006AD671 |
PISTON SET OS0.25 |
57 |
1 |
|
35.20$ |
Originals
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Subaru |
PISTON SET OS0.25
|
90 |
1.15
|
2-3
|
29.33$
|
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 Engine Piston Set (0.25)
This oversize piston set is needed when an engine cylinder has been worn, lightly scored, or re-bored during a rebuild. By moving to a 0.25 oversize, the engine can regain correct piston-to-wall clearance, restore compression, and bring back smooth power delivery ?.
How It Works
The pistons travel up and down inside the cylinders, converting combustion pressure into crankshaft rotation. With the correct size, they seal properly with the piston rings, keeping combustion pressure in the chamber and controlling oil on the cylinder wall. The 0.25 oversize design helps match freshly machined bores for tight, stable operation.
What Happens If the Pistons Are Worn or Damaged
Bad pistons or incorrect clearance can cause low compression, hard starting, misfires, oil burning, heavy blow-by, piston slap noise, poor fuel economy, and even cylinder wall damage. In severe cases you may see cracked skirts, seized pistons, or melted crowns—leading to a full engine failure ?.
Best Practice Notes
Always confirm bore size after machining, check ring end gap, and measure clearance with proper tools. Clean assembly and correct torque specs are critical for long life.
Compatibility
- Lexus LX470