Forged Pistons 2.5L 16v EJ25 DOHC Subaru

Condition: New product

Forged pistons for the Subaru EJ25 DOHC 2.5L (23 mm gudgeon pin). Chart, engine fitment, vehicles and OEM part numbers. Bores 99.5-100.5 mm, compression ratio 8.0-11.5:1.

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Specifications of the forged pistons offered by NSB Concept for Subaru 2.5 L 16 V EJ25 DOHC :

Reference	OEM Bore 99,50 mm	OEM CR 8,2–8,4 :1 (turbo DOHC)	OEM Pin 23 mm	Height OEM Pin 30,25 mm	Range	Coating	Aluminium	Forging	Dome	Weight	Rings
K9051DA	99.5	8:1	23	29.5	Wossner	NC	NC	Slipper	-28.65	NC	995XPY
K9052DA	99.5	8:1	23	30.25	Wossner	NC	NC	Slipper	-25.3	NC	995XPY
JE-314335	99.5	8.5:1	23	30.3	JE FSR	NC	2618	FSR	-24.4	392.0	NC
WK599M995	99.5	8.7:1	23	30.25	Wiseco	Skirt	2618	NC	-23.0	NC	9950VF
JE-314338	99.5	11.5:1	23	30.3	JE Round	NC	2618	Round	-1.0	416.0	NC
JE-314336	99.75	8.5:1	23	30.3	JE FSR	NC	2618	FSR	-24.8	395.0	NC
WK599M9975	99.75	8.7:1	23	30.25	Wiseco	Skirt	2618	NC	-23.0	NC	9975VF
JE-314339	99.75	11.5:1	23	30.3	JE Round	NC	2618	Round	-1.3	420.0	NC
K9051D050	100.0	8.1:1	23	29.5	Wossner	NC	NC	Slipper	-28.65	NC	1000XPY
K9052D050	100.0	8.1:1	23	30.25	Wossner	NC	NC	Slipper	-25.3	NC	1000XPY
JE-314337	100.0	8.5:1	23	30.3	JE FSR	NC	2618	FSR	-25.1	400.0	NC
WK599M100	100.0	8.7:1	23	30.25	Wiseco	Skirt	2618	NC	-23.0	NC	10000VF
JE-314340	100.0	11.5:1	23	30.3	JE Round	NC	2618	Round	-1.5	424.0	NC
K9051D100	100.5	8.1:1	23	29.5	Wossner	NC	NC	Slipper	-28.65	NC	1005XPY
K9052D100	100.5	8.1:1	23	30.25	Wossner	NC	NC	Slipper	-25.3	NC	1005XPY

Compatibility (engine codes):

EJ255 — 2.5L DOHC Turbo (WRX, Legacy/Outback XT, Forester XT)
EJ257 — 2.5L DOHC Turbo (WRX STI)
EJ254 — 2.5L DOHC naturally aspirated (depending on variants and markets)

vehicles original equipped the EJ25 DOHC :

Brand	Model	Engine code	Power	Years
Saab	9-2X Aero	EJ255	230 hp	2006
Subaru	Forester XT (SG/SH)	EJ255	210–230 hp	2004 – 2013
Subaru	Impreza WRX	EJ255	224–265 hp	2006 – 2014
Subaru	Impreza WRX STI	EJ257	300–310 hp	2004 – 2021
Subaru	Legacy GT (BL/BM)	EJ255	250–265 hp	2005 – 2012
Subaru	Outback XT (BP)	EJ255	243–250 hp	2005 – 2009

OEM piston references :

Subaru EJ257 (WRX STI, andc.): 12006AC390 — piston & Pin Set, STD grade A (depending on grade/landre).
Subaru EJ255 (WRX, Legacy GT, Outback XT, Forester XT): 12006AD220 — piston & Pin Set, STD grade B (depending on model year and grade).

Warning: Before installation, please verify the integrity and conformity of each component of the piston kit as well as the correctness of the assembly in the engine; any warranty is strictly limited to the parts included in the piston kit.

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