Engine Internals

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Category Category


Product Type Product Type







Brand Brand







Camshafts Camshafts
Crankshafts Crankshafts
Engine Bearings Engine Bearings
Hardware Hardware
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-'21 STi
In Stock!

ACL Race Series Crankshaft Main Bearings (+0.025mm, Set), '02-'14 WRX & '04-'21 STi

$80.81

Company23 Piston Ring Compressor (90.17mm-93.98mm), 2002-2005 WRX
In Stock!

Company23 Piston Ring Compressor (90.17mm-93.98mm), 2002-2005 WRX

$49.45

Company23 Torque Plate (EJ20), 2002-2005 WRX
In Stock!

Company23 Torque Plate (EJ20), 2002-2005 WRX

$324.45

Company23 Torque Plate (EJ25), 2004-2021 STi & 2006-2014 WRX
In Stock!

Company23 Torque Plate (EJ25), 2004-2021 STi & 2006-2014 WRX

$324.45

Roger Clark Motorsport Seal Kit For The RCM Engine Block Case Plug Kit, '02-'14 WRX & '04-'21 STi
In Stock!

Roger Clark Motorsport Seal Kit For The RCM Engine Block Case Plug Kit, '02-'14 WRX & '04-'21 STi

$35.88

Subaru (OEM) Engine Block Case Bolt (1 Required), '02-'14 WRX & '04-'21 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (1 Required), '02-'14 WRX & '04-'21 STi

$1.48

Subaru (OEM) Engine Block Case Bolt (1 Required, Sold Each), '02-'14 WRX & '04-'21 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (1 Required, Sold Each), '02-'14 WRX & '04-'21 STi

$2.48

Subaru (OEM) Engine Block Case Bolt (8 Required, Sold Each), '02-'14 WRX & '04-'21 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (8 Required, Sold Each), '02-'14 WRX & '04-'21 STi

$4.63

Subaru (OEM) Engine Block Case Bolt (M8, 6 Required, Sold Each), '02-'14 WRX & '04-'21 STi
In Stock!

Subaru (OEM) Engine Block Case Bolt (M8, 6 Required, Sold Each), '02-'14 WRX & '04-'21 STi

$2.38

Subaru (OEM) Engine Block Case Bolts (2 Req'd, Sold As Pair), '02-'14 WRX & '04-'21 STi
In Stock!

Subaru (OEM) Engine Block Case Bolts (2 Req'd, Sold As Pair), '02-'14 WRX & '04-'21 STi

$6.96

Subaru (OEM) Intake AVCS Solenoid Gasket, '04-'21 STi & '06-'14 WRX
In Stock!

Subaru (OEM) Intake AVCS Solenoid Gasket, '04-'21 STi & '06-'14 WRX

$3.84

Subaru (OEM) O-Ring (Crankcase, Between Block Halves), '02-'26 WRX/STi & BRZ/FR-S/86
In Stock!

Subaru (OEM) O-Ring (Crankcase, Between Block Halves), '02-'26 WRX/STi & BRZ/FR-S/86

$5.64

Subaru (OEM) Piston Wrist Pin Circlip (Each), '02-'14 WRX & '04-'21 STi
Ships From Manufacturer!

Subaru (OEM) Piston Wrist Pin Circlip (Each), '02-'14 WRX & '04-'21 STi

$2.13

Subaru (OEM) Valve Cover Washers (Set/16), 2002-2005 WRX
In Stock!

Subaru (OEM) Valve Cover Washers (Set/16), 2002-2005 WRX

$72.96

Subaru (OEM) Water Pump Gasket, 2002-2014 WRX & 2004-2021 STi
In Stock!

Subaru (OEM) Water Pump Gasket, 2002-2014 WRX & 2004-2021 STi

$5.49

Subaru (OEM) Water Pump 'Z' Gasket, 2002-2014 WRX & 2004-2021 STi
In Stock!

Subaru (OEM) Water Pump 'Z' Gasket, 2002-2014 WRX & 2004-2021 STi

$6.78

ACL Race Series Rod Bearings (+0.25mm, Set), '02-'14 WRX & '04-'21 STi
Ships From Manufacturer!

ACL Race Series Rod Bearings (+0.25mm, Set), '02-'14 WRX & '04-'21 STi

$43.54

ARP Ultra-Torque Fastener Assembly Lubricant (0.5oz.)
Ships From Manufacturer!

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

$3.01

IAG Long Block Basic Installation Kit, 2006-2007 WRX
Ships From Manufacturer!

IAG Long Block Basic Installation Kit, 2006-2007 WRX

$2,249.99

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2021 STi
Ships From Manufacturer!

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2021 STi

$17,599.99

Roger Clark Motorsport 13 Piece Billet Block Blanking Kit (Silver), '02-'14 WRX & '04-'21 STi

Roger Clark Motorsport 13 Piece Billet Block Blanking Kit (Silver), '02-'14 WRX & '04-'21 STi

$289.38

Roger Clark 2Pc Billet Gudgeon Pin & Oil Sep. Cover Kit (Silver), '02-'14 WRX & '04-'21 STi

Roger Clark 2Pc Billet Gudgeon Pin & Oil Sep. Cover Kit (Silver), '02-'14 WRX & '04-'21 STi

$208.99

Roger Clark Motorsport Billet Aluminum Oil Separator Cover Kit (Silver), '02-'14 WRX & '04-'21 STi

Roger Clark Motorsport Billet Aluminum Oil Separator Cover Kit (Silver), '02-'14 WRX & '04-'21 STi

$160.76

Subaru (OEM) Bolt Gasket, 2008-2021 WRX/STi & 2013-2020 BRZ & FR-S
Ships From Manufacturer!

Subaru (OEM) Bolt Gasket, 2008-2021 WRX/STi & 2013-2020 BRZ & FR-S

$1.90

Subaru (OEM) Water Pump & Cam Cap Bolts (Various), '02-'14 WRX & '04-'21 STi
Ships From Manufacturer!

Subaru (OEM) Water Pump & Cam Cap Bolts (Various), '02-'14 WRX & '04-'21 STi

$2.61

IAG 1150 2.35L Closed Deck Short Block - 1150 BHP, '02-'14 WRX & '04-'21 STi
Ships From Manufacturer!

IAG 1150 2.35L Closed Deck Short Block - 1150 BHP, '02-'14 WRX & '04-'21 STi

$10,499.99

IAG 950 2.35L Closed Deck Non-Boxed Short Block - 950 BHP, '02-'14 WRX & '04-'21 STi
Ships From Manufacturer!

IAG 950 2.35L Closed Deck Non-Boxed Short Block - 950 BHP, '02-'14 WRX & '04-'21 STi

$6,999.99

IAG Crest Stage X 2.5L Subaru Billet Aluminum Short Block, '02-'14 WRX & '04-'21 STi
Ships From Manufacturer!

IAG Crest Stage X 2.5L Subaru Billet Aluminum Short Block, '02-'14 WRX & '04-'21 STi

$17,999.99

IAG 1150HP High Compression 2.5L Closed Deck Short Block, '02-'14 WRX & '04-'21 STi
Ships From Manufacturer!

IAG 1150HP High Compression 2.5L Closed Deck Short Block, '02-'14 WRX & '04-'21 STi

$9,499.99