10103AC890 Subaru SHORT BLOCK ENG AY, Price: 2020.92$, Weight: 47.4kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
10103AC890 |
SHORT BLOCK ENG AY |
10 |
47.4 |
7-10 |
2020.92$ |
Originals
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Subaru |
SHORT BLOCK ENG AY
|
0 |
54.51
|
-
|
1941.66$
|
Not Available |
Substitutions
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Subaru |
10103AC050
|
SHORTBLOCKENGAY
|
0 |
54.798
|
-
|
1941.66$
|
Not Available |
Compatibility
| Body | Engine | Vehicle Grade | Market | Model Year From | Train | Gearbox | Diagram |
|---|---|---|---|---|---|---|---|
| SEDAN | 2500CC EMPI DOHC TURBO | STI-PREMIUM WITH WING SPL | USA | 01.2017 | FULLTIME 4WD | 6SP MANUAL TRANSMISSION | View |
| Body | Made For Region | Engine | Vehicle Grade | Market | Model Year From | Train | Diagram |
|---|---|---|---|---|---|---|---|
| SEDAN | LHD | 2.5L DOHC TURBO | STI-HIGH WITH WING SPL | Europe/General | 04.2017 | FULLTIME 4WD | View |
Engine Short Block Assembly for Subaru Boxer Turbo 🚗🔧
This short block is the heart of the engine: a fully matched lower engine unit that carries the crankshaft, pistons, rods, and cylinder block. It’s needed when the original bottom end is worn, seized, knock-damaged, or has low compression from cylinder wear. Replacing the short block restores correct clearances, stable oil pressure, and smooth power delivery.
How it works ⚙️
The crankshaft converts piston movement into rotation, while the pistons seal against the cylinder walls to build compression. Bearings ride on a film of pressurized oil, keeping metal parts separated under high load. In turbo boxer engines, this assembly must stay perfectly aligned to handle boost, heat, and rapid RPM changes.
If the short block fails ❗
A damaged bottom end can cause rod knock, heavy oil consumption, misfire, low compression, blow-by, and sudden loss of power. If driven further, it may spin a bearing, crack a piston, score cylinder walls, or even lock the engine—often leading to total engine failure and turbo contamination with metal debris.
Compatibility ✅
- Wrx/Levorg
- Wrx