IAG : Performance 550 2.5L Long Block Engine w/Street Heads - (EJ25)
IAG

IAG : Performance 550 2.5L Long Block Engine w/Street Heads - (EJ25)

In the rangePart no. IAG-ENG-L550W

Fitment not listed

The supplier does not state which cars this fits, and we would rather say so than guess. Ask us with your car and we will check before you order.

Power rating
550BHP
Engine
EJ25
Bore
99.5mm (stock)
Category
Engine & forced induction
All 10 specifications ↓

Want this, or something like it?

We can’t take an order yet — supply is still being arranged. Ask, and we will tell you what we know about it and let you know when it is available. What people ask for is what we range first.

  • Fitment is confirmed, not guessed

    A chassis is listed only where the part is on one of our cars or on the manufacturer’s own application list.

  • Some of this is on our cars

    Parts marked On our cars are ones we race. Those descriptions are written from running them, not from a brochure.

  • A person answers

    Enquiries go to Michael, who races the cars. Tell us the car and what you are trying to fix.

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Specifications

Brand
IAG
Part number
IAG-ENG-L550W
Power rating
550BHP
Engine
EJ25
Bore
99.5mm (stock)
Pistons
JE 2618 T6 forged, 99.5mm
Connecting rods
IAG H-Beam, ARP2000 bolts
Crankshaft
STI, nitride treated (2017+)
Head studs
11mm ARP 2000
Category
Engine & forced induction

Figures as published for this part; fitment is only what we have confirmed. Check critical dimensions against your car before ordering.

About this part

IAG's Performance 550 2.5L Long Block (IAG-ENG-L550W) is built for the EJ25, rated at 550BHP on a stock 99.5mm bore. Pistons are JE 2618 T6 forged, also 99.5mm, running on IAG H-Beam connecting rods with ARP2000 bolts. The crankshaft is an STI unit, nitride treated from 2017 on, and the head studs are 11mm ARP 2000.

We have not run this part ourselves — the ones we have are marked on our cars.