IAG Performance 600 Series FA20 DIT Long Block 2015-2021 WRX

IAG Performance 600 Series FA20 DIT Long Block 2015-2021 WRX

The IAG Performance 600 Series long block is a complete, timed FA20F (DIT) crate engine, valve cover to valve cover, for the 2015-2021 VA WRX. IAG rates it for up to 600 BHP. Because the timing components are installed at the factory, the installer avoids setting up the FA20F's complex timing system.

What's included

• Short block: Brand new OEM Subaru FA20 case halves with modified oil passages, bored and honed to 86.1mm on a Sunnen SV-30
• Crankshaft and bearings: New Subaru FA20 DIT WRX crankshaft (2015+); ACL or King XPG rod and main bearings
• Connecting rods: IAG-Spec H-Beam with ARP2000 bolts
• Pistons: IAG-Spec JE FSR 86.1mm forged, 2618 T6 alloy, asymmetrical skirts, ring set; .866" x 2.250" x .150" carbon steel wrist pins with Tru Arc locks
• Compression ratio: 10.6:1 on standard gasket thickness
• Heads: Brand new Subaru OEM WRX AW castings, multi-angle valve job, resurfaced on a TS-3000 BlockMate, ultrasonically cleaned
• Valvetrain: GSC 36mm intake and 32mm exhaust valves (standard size), Kelford dual valve springs with titanium retainers, GSC valve stem seals, OEM guides, lifters, rocker arms and lash caps
• Camshafts: Kelford 264-EZ, with cam timing and valve lash set using OEM shims
• Hardware: ARP 2000 11mm head studs; OEM head gaskets, valve cover gaskets and valve covers; OEM timing components and oil pump/timing cover; rear main seal and separator kit; crankshaft Woodruff key; OEM oil plug and standard case bolts

Before you order

Listed for the 2015-2021 WRX with the FA20F. Your installer transfers the manifolds, sensors, injectors and external accessories; IAG notes most installations can be done in a single day. Send us your VIN or engine code and we will confirm fitment before you order.

See also: FA20 vs EJ25 · head studs vs head bolts · used vs rebuilt engines · engine replacement checklist · what comes with a long block · is it worth replacing an engine? · signs of a blown head gasket · Subaru WRX and STI parts · FA20 vs FA24 · subaru fa20 / fa24 · IAG Performance Subaru blocks and all engines by engine code.

Shipping and returns

Shipping is a flat $80.00 per order to US addresses, and returns are free within 15 days of delivery. Questions before you order? Ask a parts specialist.