Engine Internals

Crankshafts Crankshafts
Engine Bearings Engine Bearings
Gaskets Gaskets
Hardware Hardware
Head Gaskets Head Gaskets
Oil Pumps, Pans, & Pickups Oil Pumps, Pans, & Pickups
Pistons Pistons
Rods Rods
Valvetrain Valvetrain
ACL Race Series Crankshaft Main Bearings (+0.025mm, Set), '02-'14 WRX & '04-'20 STi
In Stock!

ACL Race Series Crankshaft Main Bearings (+0.025mm, Set), '02-'14 WRX & '04-'20 STi

$52.42

ACL Race Series Main Bearings (Standard Size, Set), '02-'14 WRX & '04-'20 STi
In Stock!

ACL Race Series Main Bearings (Standard Size, Set), '02-'14 WRX & '04-'20 STi

$52.42

ACL Race Series Main Bearings (Std w/ Extra Clear, Set), '02-'14 WRX & '04-'20 STi
In Stock!

ACL Race Series Main Bearings (Std w/ Extra Clear, Set), '02-'14 WRX & '04-'20 STi

$52.42

ACL Race Series Rod Bearings (+0.25mm, Set), '02-'14 WRX & '04-'20 STi
Available For Order!

ACL Race Series Rod Bearings (+0.25mm, Set), '02-'14 WRX & '04-'20 STi

$36.88

ACL Race Series Rod Bearings (Std Size, Extra Oil Clear), '02-'14 WRX & '04-'20 STi
In Stock!

ACL Race Series Rod Bearings (Std Size, Extra Oil Clear), '02-'14 WRX & '04-'20 STi

$36.88

ACL Race Series Rod Bearings (Std Size, Set), '02-'14 WRX & '04-'20 STi
In Stock!

ACL Race Series Rod Bearings (Std Size, Set), '02-'14 WRX & '04-'20 STi

$36.88

ARP Head Studs, 2002-2014 WRX & 2004-2020 STi
In Stock!

ARP Head Studs, 2002-2014 WRX & 2004-2020 STi

$210.52

Company23 Piston Ring Compressor (96.52mm-100.33mm), '04-'20 STi & '06-'14 WRX
In Stock!

Company23 Piston Ring Compressor (96.52mm-100.33mm), '04-'20 STi & '06-'14 WRX

$40.46

Company23 Torque Plate (EJ25), 2004-2020 STi & 2006-2014 WRX
In Stock!

Company23 Torque Plate (EJ25), 2004-2020 STi & 2006-2014 WRX

$265.46

Killer B Baffle Windage Tray, 2002-2014 WRX & 2004-2020 STi
In Stock!

Killer B Baffle Windage Tray, 2002-2014 WRX & 2004-2020 STi

$79.00

Killer B Oil Pan, 2002-2014 WRX & 2004-2020 STi
In Stock!

Killer B Oil Pan, 2002-2014 WRX & 2004-2020 STi

$469.00

Killer B Ultimate Oil Pick Up, 2004-2020 STi & 2006-2014 WRX
In Stock!

Killer B Ultimate Oil Pick Up, 2004-2020 STi & 2006-2014 WRX

$149.00

Subaru (OEM) Engine Block Case Bolt (1 Required), '02-'14 WRX & '04-'20 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (1 Required), '02-'14 WRX & '04-'20 STi

$1.30

Subaru (OEM) Engine Block Case Bolt (1 Required, Sold Each), '02-'14 WRX & '04-'20 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (1 Required, Sold Each), '02-'14 WRX & '04-'20 STi

$2.04

Subaru (OEM) Engine Block Case Bolt (6 Required, Sold Each), '02-'14 WRX & '04-'20 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (6 Required, Sold Each), '02-'14 WRX & '04-'20 STi

$2.15

Subaru (OEM) Engine Block Case Bolt (8 Required, Sold Each), '02-'14 WRX & '04-'20 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (8 Required, Sold Each), '02-'14 WRX & '04-'20 STi

$3.97

Subaru (OEM) Engine Block Case Bolts (2 Req'd, Sold As Pair), '02-'14 WRX & '04-'20 STi
In Stock!

Subaru (OEM) Engine Block Case Bolts (2 Req'd, Sold As Pair), '02-'14 WRX & '04-'20 STi

$6.04

Subaru (OEM) Intake AVCS Solenoid Gasket, '04-'20 STi & '06-'14 WRX
In Stock!

Subaru (OEM) Intake AVCS Solenoid Gasket, '04-'20 STi & '06-'14 WRX

$3.36

Subaru (OEM) O-Ring (Oil Pick Up Tube), 2002-2014 WRX & 2004-2020 STi
In Stock!

Subaru (OEM) O-Ring (Oil Pick Up Tube), 2002-2014 WRX & 2004-2020 STi

$2.31

Subaru (OEM) Piston Wrist Pin Circlip (Each), '02-'14 WRX & '04-'20 STi
In Stock!

Subaru (OEM) Piston Wrist Pin Circlip (Each), '02-'14 WRX & '04-'20 STi

$2.01

ARP Ultra-Torque Fastener Assembly Lubricant (0.5oz.)
Available For Order!

ARP Ultra-Torque Fastener Assembly Lubricant (0.5oz.)

$2.82

Killer B Relocated Oil Filler Tube, 2002-2005 WRX & 2004-2005 STi
In Stock!

Killer B Relocated Oil Filler Tube, 2002-2005 WRX & 2004-2005 STi

$149.00

Subaru (OEM) Bolt Gasket, 2008-2020 WRX & STi & 2013-2020 BRZ & FR-S
Available For Order!

Subaru (OEM) Bolt Gasket, 2008-2020 WRX & STi & 2013-2020 BRZ & FR-S

$1.38

Subaru (OEM) Crankshaft Position Sensor, 2002-2014 WRX & 2004-2020 STi
In Stock!

Subaru (OEM) Crankshaft Position Sensor, 2002-2014 WRX & 2004-2020 STi

$105.45

Subaru (OEM) Oil Pickup Tube, '04-'05 STi & '05 Legacy GT/Outback XT
Available For Order!

Subaru (OEM) Oil Pickup Tube, '04-'05 STi & '05 Legacy GT/Outback XT

$34.57

Subaru (OEM) Water Pump & Cam Cap Bolts (Various), '02-'14 WRX & '04-'20 STi
Available For Order!

Subaru (OEM) Water Pump & Cam Cap Bolts (Various), '02-'14 WRX & '04-'20 STi

$2.17

Tomei Head Studs (Set), 2002-2014 WRX & 2004-2020 STi
Available For Order!

Tomei Head Studs (Set), 2002-2014 WRX & 2004-2020 STi

$468.00

Subaru (OEM) O-Ring (Crankcase, Between Block Halves), '02-'20 WRX/STi & BRZ/FR-S/86
In Stock!

Subaru (OEM) O-Ring (Crankcase, Between Block Halves), '02-'20 WRX/STi & BRZ/FR-S/86

$4.71

IAG Spacer Kit For IAG Oil Pickup w/ KillerB Oil Pan, '04-'20 STi & '06-'14 WRX
In Stock!

IAG Spacer Kit For IAG Oil Pickup w/ KillerB Oil Pan, '04-'20 STi & '06-'14 WRX

$29.99

Subaru (OEM) Water Pump 'Z' Gasket, 2002-2014 WRX & 2004-2020 STi
In Stock!

Subaru (OEM) Water Pump 'Z' Gasket, 2002-2014 WRX & 2004-2020 STi

$2.52

IAG Performance Oil Pick Up v2, 2004-2020 STi & 2006-2014 WRX
In Stock!

IAG Performance Oil Pick Up v2, 2004-2020 STi & 2006-2014 WRX

$134.99

Manley H-Beam Connecting Rods (Set/4), 2002-2014 WRX & 2004-2020 STi
Available For Order!

Manley H-Beam Connecting Rods (Set/4), 2002-2014 WRX & 2004-2020 STi

$393.19

IAG Street Series Oil Pan w/ Removable SS Lower Baffle (Black), '02-'14 WRX & '04-'20 STi
Available For Order!

IAG Street Series Oil Pan w/ Removable SS Lower Baffle (Black), '02-'14 WRX & '04-'20 STi

$499.99

IAG Street Series Oil Pan w/ Removable SS Lower Baffle (Silver), '02-'14 WRX & '04-'20 STi
In Stock!

IAG Street Series Oil Pan w/ Removable SS Lower Baffle (Silver), '02-'14 WRX & '04-'20 STi

$399.99

IAG Street Series Oil Pan Combo (Pan, Pickup, Baffle, Tray) Black, '02-'14 WRX & '04-'20 STi
Available For Order!

IAG Street Series Oil Pan Combo (Pan, Pickup, Baffle, Tray) Black, '02-'14 WRX & '04-'20 STi

$699.99

IAG Street Series Oil Pan Combo (Pan, Pickup, Baffle, Tray) - Silver, '02-'14 WRX & '04-'20 STi
In Stock!

IAG Street Series Oil Pan Combo (Pan, Pickup, Baffle, Tray) - Silver, '02-'14 WRX & '04-'20 STi

$599.99

IAG Competition Oil Pan Combo (Pan, Pickup, Baffle, Tray) - Black, '02-'14 WRX & '04-'20 STi
Available For Order!

IAG Competition Oil Pan Combo (Pan, Pickup, Baffle, Tray) - Black, '02-'14 WRX & '04-'20 STi

$799.99

IAG Competition Oil Pan Combo (Pan, Pickup, Baffle, Tray) - Silver, '02-'14 WRX & '04-'20 STi
Available For Order!

IAG Competition Oil Pan Combo (Pan, Pickup, Baffle, Tray) - Silver, '02-'14 WRX & '04-'20 STi

$699.99

IAG Piston Wrist Pin Access Cover w/ Seals Kit, '04-'20 STi & '06-'14 WRX
Available For Order!

IAG Piston Wrist Pin Access Cover w/ Seals Kit, '04-'20 STi & '06-'14 WRX

$119.99

IAG Stage 1 2.5L Short Block, 2002-2014 WRX & 2004-2020 STi
Available For Order!

IAG Stage 1 2.5L Short Block, 2002-2014 WRX & 2004-2020 STi

$3,299.99

IAG Stage 2 2.5L Subaru Short Block, 2002-2014 WRX & 2004-2020 STi
Available For Order!

IAG Stage 2 2.5L Subaru Short Block, 2002-2014 WRX & 2004-2020 STi

$3,499.99

IAG Stage 2 Tuff Short Block 2.5L, 2002-2014 WRX & 2004-2020 STi
Available For Order!

IAG Stage 2 Tuff Short Block 2.5L, 2002-2014 WRX & 2004-2020 STi

$3,799.99

IAG Stage 2.5 Closed Deck Short Block, 2002-2014 WRX & 2004-2020 STi
Available For Order!

IAG Stage 2.5 Closed Deck Short Block, 2002-2014 WRX & 2004-2020 STi

$4,399.99

IAG Stage 3 Extreme Closed Deck Short Block, '02-'14 WRX & '04-'20 STi
Available For Order!

IAG Stage 3 Extreme Closed Deck Short Block, '02-'14 WRX & '04-'20 STi

$5,249.99

IAG Stage 4 Extreme Closed Deck Short Block, '02-'14 WRX & '04-'20 STi
Available For Order!

IAG Stage 4 Extreme Closed Deck Short Block, '02-'14 WRX & '04-'20 STi

$7,999.99

IAG Stage 4 TUFF Closed Deck Short Block, '02-'14 WRX & '04-'20 STi
Available For Order!

IAG Stage 4 TUFF Closed Deck Short Block, '02-'14 WRX & '04-'20 STi

$5,999.99

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2020 STi
Available For Order!

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2020 STi

$15,999.99

IAG Willall Billet Case Halves, 2004-2020 STi & 2006-2014 WRX
Available For Order!

IAG Willall Billet Case Halves, 2004-2020 STi & 2006-2014 WRX

$10,499.99