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ARP

ARP Subaru WRX EJ20 & EJ25 Head Stud Kit

$219.99
260-4701
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This ARP head stud kit is made from 8740 chromemoly steel, 190,000 psi tensile strength. It is precision centerless ground and thread rolled to...

Subaru OEM Master Gasket and Seal Kit - Subaru STI 2008-2020

$357.62
10105AB2009X
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Engine Gaskets Gaskets & Miscellaneous New products
Full Master Gasket kits come complete with every gasket or seal that you could possibly need when doing any level of engine work including,...

IAG Stage 2.5 EJ25 Subaru Closed Deck Short Block For WRX, STI, LGT, FXT

$4,799.99
IAG-ENG-1252
All Best selling products Commerceinstruments Best Selling Products Engine Build Components IAG Performance New products Shortblocks
IAG Stage 2.5 Subaru EJ25 Closed Deck Short Block  The IAG Stage 2.5 Short Block starts with brand new Subaru 2.5L engine case halves....

IAG Stage 2 2.5L Subaru Short Block for WRX, STI, Legacy GT, Forester XT

$3,799.99
IAG-ENG-1202
All Best selling products Commerceinstruments Best Selling Products Engine Build Components IAG Performance New products Shortblocks
IAG Stage 2 Short Block The IAG Stage 2 Short Block is designed for modified EJ25 Subaru's that need a beefed-up performance short block....

King XPG Series Main Bearings - Subaru WRX 2002-2014 / STi 2004-2020 (+Multiple Subaru Fitments)

$94.35 $74.99
MB5382XPG
All Best selling products Commerceinstruments Best Selling Products Engine Bearings Engine Build Components Main Bearings New products
King conducted extensive research into the unique oiling circumstances of the Subaru EJ series engines. What resulted is a completely re-engineered main bearing set...

King XPG Series Rod Bearings 52mm Journal - Subaru WRX 2002-2014 / STi 2004-2020 (+Multiple Subaru Fitments)

$62.42 $49.99
CR4125XPG
All Best selling products Commerceinstruments Best Selling Products Engine Bearings Engine Build Components New products Rod Bearings
These bearings are specifically engineered to solve premature bearing failure caused by low oil pressure or oil starvation that has plagued the high output...

Manley Subaru WRX/STI EJ205/EJ257/EJ255 H Tuff Connecting Rod Set

$571.04
15024-4
All Best selling products Commerceinstruments Best Selling Products Connecting Rods Engine Build Components New products
Manley "H-Tuff" connecting rods are manufactured from 4340 forgings to the same exacting standards developed and approved by our original equipment customers. There is...
ARP

ARP Subaru FA20 2.0L 4Cyl Head Stud Kit

$263.34
260-4301
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It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated,...

IAG FIRE-LOCK HEAD GASKETS (1 PAIR W/ FIRE-LOCK RINGS) FOR SUBARU EJ25 / EJ257, 100MM, .051", FOR 14MM HEAD STUDS

$299.99
IAG-ENG-1740
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Engine Gaskets Gaskets & Miscellaneous IAG Performance New products
On Order, Current ETA 02/14/23   After years of research and development testing, the IAG Performance Fire-Lock head gasket is the newest solution to...

Manley 99.5mm STD Bore Pistons - Subaru WRX 2006-2014 / STi 2004-2020 (+Multiple Fitments)

$656.00
612000C-4
All Best selling products Commerceinstruments Best Selling Products Engine Build Components New products Pistons / Rings
Made one too many passes at the drag strip? Or is your engine starting to get a little tired? Not a problem. Manley has provided...

IAG Stage 2 FA20 DIT Subaru Short Block for 2015+ WRX

$4,839.99
IAG-ENG-1206
All Best selling products Commerceinstruments Best Selling Products Engine Build Components IAG Performance New products Shortblocks
IAG Stage 2 FA20 DIT Short Block The IAG Stage 2 short block starts with new Subaru FA 2.0L engine case halves that are...
ARP

ARP 99+ Subaru EJ Series Phase 2 SOHC Head Stud Kit

$279.99
260-4702
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Engine Hardware & Accessories Head Studs & Bolts New products
ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is placed vertically in special racks and...

IAG Half Moon Valve Cover Cam Seals (4) For 02-06 Subaru WRX / 04-06 STI / 04-06 FXT / 05-06 LGT (Black Finish)

$64.99
IAG-ENG-2000BK
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Engine Hardware & Accessories IAG Performance New products Seals
IAG billet aluminum half moon valve cover cam seals replace the OEM style rubber seals that are prone to leaking and failure as they...

IAG Stage 1 2.5L Subaru Short Block For WRX, STI, Legacy GT & Forester XT

$3,599.99
IAG-ENG-1002
All Assembled Short Blocks Best selling products Commerceinstruments Best Selling Products Engine Build Components IAG Performance New products Shortblocks
The IAG Stage 1 Short Block is perfect for lightly modified EJ25 Subaru's that need a basic and reliable performance short block. Subaru turbo...

Kelford Cams Dual Valve Springs & Titanium Retainers - Subaru WRX 2015-2021 (+Multiple Fitments)

$595.00
KVS87-DT
All Best selling products Commerceinstruments Best Selling Products Engine Build Components New products Valve Springs & Retainers Valvetrain Components
The Kelford Cams KVS87-DT valve spring kit is designed for the Turbocharged 2015+ Subaru FA20 DIT engines. It features a Dual Spring and Titanium...

Kelford Cams 272/276 Degree Camshafts (264-A) - Subaru WRX 2015-2021

$1,195.00
264-A
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272°/276° Kelford performance cams are designed to suit most motorsport applications. The cams are best for 2015-21 WRX FA20 DIT engines that produce 450hp-600hp....

Brian Crower Spring and Titanium Retainers - Subaru WRX / STI EJ205/EJ257 2002-2020

$290.55
BC0600
All Best selling products Brian Crower Commerceinstruments Best Selling Products Engine Build Components New products Valve Springs & Retainers Valvetrain Components
Designed for high rpm, Brian Crower valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing...

Manley H-Beam Connecting Rods - Subaru WRX 2002-2014 / STi 2004-2021

$511.68
14024-4
All Best selling products Commerceinstruments Best Selling Products Connecting Rods Engine Build Components New products
Remember that one time when you got your first turbocharged car? Turn the boost up they said, get a bigger turbo they said, it’s...

Brian Crower 6mm Exhaust Valve Guides - Subaru WRX 2002-2014 /STI 2004-2020

$76.97
BC3961
All Best selling products Brian Crower Commerceinstruments Best Selling Products Engine Build Components New products Valvetrain Components
BC premium valves guides are made from Manganese Silicon Aluminum Bronze alloy and CNC machined to exacting tolerances. BC guides are resistant to cracking...

Brian Crower 6mm Intake Valve Guides - Subaru WRX 2002-2014 / STI 2004-2020

$76.97
BC3960
All Best selling products Brian Crower Commerceinstruments Best Selling Products Engine Build Components New products Valvetrain Components
The ultimate in lightweight high performance, Brian Crower titanium retainers typically weigh in approximately 40% less than the factory OEM steel units. CNC machined...

Manley Platinum STD Stroke 92mm STD Bore 8.5:1 Dish Piston Set - 2002-2005 Subaru WRX (EJ205)

$656.00
615000C-4
All Best selling products Commerceinstruments Best Selling Products Engine Build Components New products Pistons / Rings
Made one too many passes at the drag strip? Or is your engine starting to get a little tired? Not a problem. Manley has provided...

IAG SHORT BLOCK PLUG & REAR MAIN SEAL KIT FOR SUBARU 2015-18 WRX FA20 DIT

$52.99
IAG-ENG-1721
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Engine Gaskets IAG Performance New products Seals
Not planning on reusing your original short block oil plugs? IAG offers a simple comprehensive cover and seal kit that includes (1) Rear main...

IAG JE Pro Seal Subaru EJ25 / EJ257 100mm Head Gasket 0.039in (1)

$69.54
SB1001-039
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Engine Gaskets Gaskets & Miscellaneous IAG Performance New products
JE Pro Seal Subaru MLS head gaskets are manufactured from stainless steel material. The multi-layer design is embossed and tempered for a long service...

IAG / ARP 14mm Head Stud Set For Subaru 06-14 WRX, 04+ STI, 05-09 Legacy GT, 04-13 Forester XT

$579.99
IAG-ENG-1711
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ARP 14mm Head Stud Set is designed for use on high horsepower Subaru engines. The larger size of the stud increases its load capacity...

Mountune Camshaft Set (V1) - Ford Focus ST 2013-2018 (+Ford 2.0L Ecoboost Engines)

$1,199.00
MTN6063-CS1-AA
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Mountune has been engineering camshafts for multi-valve Ford engines for over 35 years. Our extensive background in engine development and motorsports results in a...

Brian Crower Spring + Steel Retainers - Subaru WRX / STI EJ205/EJ257 2002-2020

$188.38
BC0600S
All Best selling products Brian Crower Commerceinstruments Best Selling Products Engine Build Components New products Valvetrain Components
Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature...

King XPG Series Rod Bearings - 52mm Journal - Subaru WRX 2015-2020 / BRZ 2013-2020 / Scion FR-S 2013-2016/ Toyota 86 2017-2020

$129.99
CR4616XPG
All Best selling products Commerceinstruments Best Selling Products Engine Bearings Engine Build Components Main Bearings New products
The FA20 bearings will be in XPG series with all the unique attributes found from the EJ series. To improve oil flow, oil slots...

King Bearings pMaxKote Main Bearings - Subaru WRX 2015-2020 / BRZ 2013-2020 / Scion FR-S 2013-2016 (+Multiple Fitments)

$317.07 $229.99
MB5745XPGC
All Best selling products Commerceinstruments Best Selling Products Engine Bearings Engine Build Components Main Bearings New products
King's pMaxKote is a revolutionary new approach to coated bearings. this unique polymer coating is applied over King's pMaxBlack overlay at the King factory...
GSC

GSC P-D Viton 6mm Valve Stem Seal Set - Subaru WRX 2002-2014 / STI 2004-2020 (EJ20/EJ25; +Multiple Subaru Fitments)

$12.94
1022
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GSC Power-Division Viton Valve Stem Seals for the Subaru EJ257, EJ207, and EJ205 6mm seal set. These are an upgrade from the standard OEM...

IAG STAGE 4 TUFF EJ25 SUBARU CLOSED DECK SHORT BLOCK FOR WRX, STI, LEGACY GT, FORESTER XT

$6,599.99
IAG-ENG-1452
All Assembled Short Blocks Best selling products Commerceinstruments Best Selling Products Engine Build Components IAG Performance New products Shortblocks
IAG Stage 4 Tuff Subaru EJ25 Closed Deck Short Block The IAG Stage 4 Tuff Short Block starts with brand new Subaru 2.5L engine case...
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All products sold by Patterson Performance Parts, LLC are intended for off-road and/or competition use only. By purchasing aftermarket products from us, having us install the products, or both, the customer takes full responsibility for any use, and/or misuse of the product; and agrees that Patterson Performance Parts holds no responsibility for any consequences, legal, or other, of such use and/or misuse.
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