12033AC340 Subaru RING SET-PISTON, Price: 110.64$, Weight: 1kg


Make Number Name Availability Weight, kg Ship in, Days Price

Subaru

12033AC340

RING SET-PISTON

0

1

 Dispatch 24h

110.64$

Not Available

Originals

Make Number Name Availability Weight, kg Processing, days Price  
Subaru
12033AC340 
RING SET-PISTON
0
1.15
-
94.92$
Not Available

Compatibility

BodyEngineVehicle GradeMarketModel Year FromTrainGearboxDiagram
WAGON2000CC DOHC DITXT PREMIUM EYESIGHTUSA02.2017FULLTIME 4WDCONTINUOUS VARIABLE GEAR View
BodyEngineVehicle GradeMarketModel Year FromModel Year ToTrainDiagram
ワゴン2.0L EMPI DOHC DIT2.0GT DIT EYESIGHTJapan02.201209.2014フルタイム4リンクドウ View
BodyEngineVehicle GradeMarketModel Year FromTrainGearboxDiagram
SEDAN2000CC DOHC DITWRX-LIMITED WITH LIP ESUSA01.2017FULLTIME 4WDCONTINUOUS VARIABLE GEAR View
BodyEngineVehicle GradeMarketModel Year FromTrainGearboxDiagram
ワゴン2.0L EMPI DOHC DITSTI SPORT EYESIGHTJapan02.2017フルタイム4リンクドウトルクコンバータシキジドウムダンヘンソクキ View

Piston Ring Set for Subaru Boxer Engines ?

Why this part is needed

This set seals the cylinder, keeps compression high, and controls oil on the bore. Good rings mean strong power, clean burn, and low oil use. They also protect the cylinder walls and keep emissions in check ?.

How it works

Each piston uses three rings. The top ring locks combustion pressure. The second ring helps seal and scrapes gases back down. The oil control ring (with expander) meters a thin oil film, then returns extra oil through drain holes. Rings ride in piston grooves, flex with heat, and maintain a tight gas seal against the honed cylinder.

What happens if rings fail

Worn or broken rings cause blow‑by, low compression, rough idle, and loss of power. You may see blue smoke, rising oil use, fuel smell in oil, fouled plugs, and even catalyst damage. Hard starts and detonation under boost are common ⚠️.

Pro install tips

- Hone bores and clean until no grit remains. - Set ring end gaps to spec and “clock” gaps 120° apart. - Check groove clearance, fit pins and rods correctly, lube with clean oil, and follow torque and run‑in steps ✅.

Compatibility

  • Legacy
  • Forester
  • Wrx/Levorg
  • Wrx