Flatirons Tuning - Engine Components


	2002+ 10mm Oil Pump - Kit
	In Stock and Ready To Ship! The 2002+ WRX and 2004 - 2007 STI all used this Subaru 10mm Oil Pump. If you are looking to replace yours with another OEM direct replacement, built to Subaru's quality standards this is the pump you need. ... (read more...)
	Regular Price: $174.95 On Sale For: $143.95	Quantity:

	2008 USDM STi 11mm Oil Pump - Kit
	In Stock and Ready To Ship! This pump comes on the 2008 STI. Because of the AVCS on both the Intake and Exhaust cam's, Subaru improved the design of t... (read more...)
	Regular Price: $154.95 On Sale For: $139.95	Quantity:

	ACL Main and Rod Bearings for the Subaru EJ20/EJ257
	These are ACL's Race Bearings for the Subaru EJ20 / EJ257. These are the Standard thickness. These are the factory thickness, equivalent to the Cosworth Size 1 bearings or the OEM Subaru bearing... (read more...)
	Price: $48.09	Quantity:

	ARP Head Studs for the WRX and STI
	Back in stock and Ready to Ship! It is for good reason that virtually every top professional engine builder relies on ARP Pro Series Head studs for their all-out competition engines. Simply stated, there's not a better stud on the market today. ARP u... (read more...)
	Regular Price: $323.41 On Sale For: $192.65	Quantity:

	Cosworth 11mm Blueprinted Oil Pump Kit
	Now with free shipping in the continental USA! To produce this pump, Cosworth starts with the improved 11mm oil pump that comes standard in the 2008+ STi. This pump is the same pump used in the JDM / EDM STi's, which are rev-limited at 8k RPMs. This pump is also available on our website in unmodified OEM form. Cosworth then increases the spring tension in the pres... (read more...)
	Regular Price: $485.00 On Sale For: $385.00	Quantity:

	Cosworth 12mm High Pressure Blueprinted Oil Pump Kit
	We now offer FREE SHIPPING on this item! Increasing oil volume will he... (read more...)
	Regular Price: $655.00 On Sale For: $538.00	Quantity:

	Cosworth 2.6 Liter Stroker Kit for the EJ25
	For a limited time, we are offering FREE SHIPPING on Cosworth Stroker Kits! (read more...)
	Regular Price: $6,385.00 On Sale For: $5,605.00	Quantity:

	Cosworth EJ20/EJ255/EJ257 Kevlar Timing Belt
	We are currently offering FREE ground shipping on this item! Cosworth Kevlar High Performance Timing belts are 300% stronger than original equipment timing belts and are the perfect compliment when installing Cosworth camshafts or cylinder heads. Engineered with the following features: (read more...)
	Regular Price: $284.00 On Sale For: $270.00	Quantity:

	Cosworth Forged Connecting Rods
	The connecting rod is the vital link between the piston and the rotational portion of the engine. When engine output is increased, the demands placed on the connecting rod increase as well. To ensure engine reliability in all conditions, original connecting rods should be replaced with heavy duty specification parts. Cosworth Forged Connecting Rods ar... (read more...)
	Regular Price: $995.00 On Sale For: $946.00	Quantity:

	Cosworth Forged Pistons for Subaru STi EJ257
	We now offer FREE SHIPPING on this item! The piston is one of the most important components within the engine. It can be subjected to directional change up to 285 times every second and must withstand acceleration forces of 8500g. (read more...)
	Regular Price: $867.00 On Sale For: $824.00	Quantity:

	Cosworth High Performance Head Gaskets for STi EJ257
	We now offer FREE SHIPPING on this item. Cosworth High Performance Head Gaskets are engineered to seal in power under the most demanding conditions. Constructed from stainless steel with a folded stopper layer, each application features superior sealing compared to conventional multi layer steel gaskets. Additionally, Cosworth High Performance Head Gaskets are manu... (read more...)
	Regular Price: $250.00 On Sale For: $220.00	Quantity:

	Cosworth Main and Rod Bearings
	We now offer FREE SHIPPING on these items! Engine bearings are one of the most vital... (read more...)
	Regular Price: $119.00 On Sale For: $114.00	Quantity:

	Cosworth Oil Filler Cap - Subaru
	Cosworth Oil Filler Cap The Cosworth Oil Filler Cap is machined from solid aluminum with the traditional Cosworth "three prong" ergonomic style. This light weight oil fiiler cap includes a genuine Subaru O-ring seal, pre-installed to ensure leak free operation on your engine. Each cap features a durable anodized finish i... (read more...)
	Regular Price: $73.00 On Sale For: $64.00	Quantity:

	Cosworth Ultra High Performance 11mm Head Studs
	Cosworth's Ultra High Performance 11mm Head Studs are essential for high performance engine builds. Heavy duty head studs reduce cylinder head movement in high boost or high compression engines optimizing cylinder head to block sealing. Special heat treat process includes heating in vacuum sealed furnace and quenched in a nitrogen chamber for precision... (read more...)
	Regular Price: $499.00 On Sale For: $475.00	Quantity:

	CP Forged Pistons
	In the high pressure world of motorsports, some of the top names rely on CP Pistons to meet their needs. Here are few reasons why. Research and Development CP Pistons is backed by some of the brightest minds in the industry. This core group allows them to explore angles not possible using conventional methods. By enlisting the latest in cutting edge software packages, CP packages together creativity... (read more...)
	Regular Price: $632.20 On Sale For: $575.00	Quantity:

	Crawford Forged Pistons for the STi EJ257
	These pistons are SCCA-certified! Forged pistons designed as direct replacement pistons for the following models: Subaru 2004+ STi, 2005+ Forester XT, Legacy GT, and 2006+ WRX EJ255. Each set of Crawford Performance pistons are forged and must meet the strict standards of Crawford Performance’s master engine builder, Quirt Crawford. These custom de... (read more...)
	Price: $849.95	Quantity:

	Crawford Performance Billet Crankshaft
	Crawford Performance is pleased to announce their new line of light weight Billet crankshafts. These cranks can be made to your specifications, or you can choose from the designs that they have tested and use in their custom built engines. The standard variation is the 84mm stroker crankshaft, which we have listed for sale here. (read more...)
	Price: $3,699.95	Quantity:

	Denso Iridium Plugs for 02 - 05 WRX (OEM & 1 step colder)
	The Denso Iridium spark plug is a new generation of high-performance spark plug that uses the world’s smallest Iridium electrode that is a mere 0.4 mm in diameter. The smaller electrode is able to concentrate the electric potential at the electrode resulting in a stronger electric field. (read more...)
	Regular Price: $60.00 On Sale For: $48.00	Quantity:

	Eagle Rods for the EJ255 and EJ257 (H-Beam)
	We now have Eagle Rods in stock with FREE SHIPPING! This is a set of 4 H-Beam Eagle rods for the 2004+ STI (EJ257) and the 2002+ WRX (EJ205/255) as well as the 2005 - 2009 Legacy GT. These are an excellent addition if you are building your engine, and putting in forged pistons, and they help to ensure that your engine will be reliable at higher power levels. This is a set of 4 Eagle H-Beam Rods ... (read more...)
	Regular Price: $400.00 On Sale For: $352.95	Quantity:

	Firewall Grommet Plug (1" Diameter)
	This is an OEM Subaru grommet in a 1" Diameter. It is a rubber sheet metal plug, which is used to fill unused holes in the firewall or floorpan. It is possible that this plug will fit in the holes left by the heater core hoses if the HVAC box is removed from the vehicle. <... (read more...)
	Regular Price: $1.49 On Sale For: $0.95	Quantity:

	GC/GF Air Conditioning Delete Firewall Plug
	This is the rubber grommet which plugs the firewall on 1993 - 2001 Subaru Impreza's not originally equipped with Air Conditioning. This is great for certain dash swaps, as well as for people deleting the Air Conditioning from their vehicle. (read more...)
	Regular Price: $14.36 On Sale For: $9.61	Quantity:

	JDM Subaru 12mm Oil Pump - Kit
	Currently on Backorder For: Subaru EJ20 & EJ25. This pump flows 20% more volume, while maintaining the factory USDM STI peak oil pressure. It is great for high RPM use where your original factory oil pump could not keep up with the needed oil output to properly lubricate your engines internal components. Factory Subaru engines sometimes lack the necessar... (read more...)
	Regular Price: $295.00 On Sale For: $265.00	Quantity:

	NGK Iridium Plugs for the STI, 2006+ WRX, Forester XT, and Legacy GT (OEM & 1 Step Colder)
	The benefits of NGK Iridium plugs are: - Longer Life - Improved ignition efficiency (read more...)
	Price: $32.99	Quantity:

	OEM 2009+ Subaru STi Nitride-treated Crankshaft
	This is the Nitride treated crankshaft out of the 2010 Subaru WRX STi EJ257. Nitride treatment hardens the surface of the crank, which prevents scoring caused by a piece metal getting stuck between the bearing and the crank. By increasing the hardness of the crankshaft surface, any material which gets caught between the new surfaces is simply ground down and filtered out through the oil, potentially preventing bearing failure. (read more...)
	Regular Price: $359.99 On Sale For: $315.00	Quantity:

	OEM Subaru Air Conditioning Delete / Alternator Bracket
	This bracket is a factory Subaru piece which can be used to delete the Air Conditioning Compressor on most 4 cylinder Subaru engines. This is confirmed to fit all years of the Impreza from 1993 - 2007, including the WRX and STi. (read more...)
	Price: $30.00	Quantity:

	OEM Subaru STi Crankshaft (2004 - 2007)
	This is a brand new, genuine Subaru OEM crankshaft for the 2004 - 2007 Subaru WRX STI (USDM EJ257) This Crankshaft has a 79mm stroke, and the thrust bearing is in the 5th position. This is a new genuine... (read more...)
	Regular Price: $359.99 On Sale For: $315.00	Quantity:

	Red Line Assembly Lube 4oz
	Red Line Assembly Lube 4oz -Three times greater film-strength than conventional black molybdenum Disulfide lubricants. -Can be used safely with all metals, including bearings. -Provides excellent rust and corrosion protection. -Can be used with petroleum or synthetic oils. -Excellent cling and does not plug filters. ... (read more...)
	Price: $7.95

	STI Timing Belt
	Subaru Technica International’s timing belt is actually very similar to the timing belt that is used on the Subaru WRC Rally Cars. It is designed specifically for the higher demands of hard driving, using Kevlar fibers for reinforcement, making it significantly more durable than the OEM belt. (read more...)
	Regular Price: $339.95 On Sale For: $318.70	Quantity:

	Subaru EJ Fluidampr Main Engine Pulley
	This fluid damper can protect your engine from harmful vibrations and provide longevity to your bearings on a modified engine. It is slightly heavier than the factory unit, so it is a perfect match with any of our lightened flywheels! (read more...)
	Regular Price: $550.00 On Sale For: $366.40	Quantity:

	Subaru EJ20 Crankshaft from 04-05 WRX
	This is the OEM Crankshaft that came in the 2004 - 2005 Ej20 WRX. The main difference between this, and the earlier Crankshafts is that this one came cross-drilled from the factory for better lubrication. The EJ20 has 2.0 liters of displace... (read more...)
	Regular Price: $385.43 On Sale For: $308.35	Quantity:

	Subaru EJ257 STI Engine Case Halves (Empty)
	We got enough requests for these that we decided to list them on our site separately from the complete STi short-block. This is a brand new Subaru EJ257 short block case. It does not have a crank, pistons, rods, or bearings, and is just a plain case. If you are going to be building a block with forged pistons, or more, this is a perfect way to start because you can pick all the parts you ... (read more...)
	Regular Price: $1,104.23 On Sale For: $999.99	Quantity:

	Subaru Master Gasket Kit for 2002 - 2005 WRX EJ205 (2.0L)
	This is the OEM Subaru Master Gasket Kit for the 2.0L WRX's (EJ205) from 2002 - 2005. This kit contains pretty much all of the gaskets that you would need to re-build your engine, including the headgaskets, Cam seals, rear main seal, intake manifold gaskets, exhaust manifold gaskets, etc. This is by far the easiest way to make sure that you have all the gaskets that you will need for your rebuild, and you actua... (read more...)
	Regular Price: $408.66 On Sale For: $327.64	Quantity:

	Subaru OEM Fuel Injector O Rings
	These are the "O" rings for the top of the fuel injectors to seal the fuel injector to fuel rails. These usually come with a set of New fuel injectors. If you are re-installing a fuel injector it is not recommended to re-use the "O" rings. Because these "O" rings come into contact with the fuel and vapor they are manufactured with a special material. These will not degrade in a short time like similar size "O" rings wh... (read more...)
	Price: $10.55	Quantity:

	Subaru OEM Head Studs for Turbo EJ Series Engines
	These are the Origional Subaru Head Studs used in the EJ Series Turbo Engine's. These will fit the 2002+ USDM WRX, 2004+ STI, 2004+ Forester XT, and 2005+ Legacy GT. We sell them either individually, or as a set. The Subaru Part # for these is 11095AA042, and you would need 12 for a complete set, 6 for each side. ... (read more...)
	Price: $10.58	Quantity:

	Subaru OEM Oil Coolers
	These are the OEM Subaru Oil Coolers, which we recommend you replace if you have had any type of bearing failure. Pieces of metal from such failures can get lodged in the oil cooler, and there is no way to effectively flush them out. If you choose to re-use your existing oil cooler, there is a chance that one of those pieces of me... (read more...)
	Regular Price: $286.15 On Sale For: $228.92	Quantity:

	Subaru OEM STi EJ257 Master Gasket Set
	This is a brand new Subaru OEM Master Gasket Set for the STi EJ257. This includes most gaskets required to do a complete re-sealing of your engine, and works out to be considerably cheaper than buying them from Subaru individually. (read more...)
	Regular Price: $303.23 On Sale For: $272.99	Quantity:

	Subaru OEM Timing Belt for the WRX, STI, Legacy GT
	Subaru requires the Timing Belt to be replaced at 105,000 miles. We recommend replacing the timing belt at or around 90,000 miles because when this is done, it allows the mechanic to inspect many different critical engine components including ... (read more...)
	Regular Price: $149.95 On Sale For: $119.99	Quantity:

	Subaru OEM Timing Belt Tensioner Assembly
	This is a Brand New OEM Subaru Hydraulic Timing Belt Tensioner. It will fit most all EJ series engines, including the 2002+ WRX, 2004+ STI, 2005+ Legacy GT, and 2004+ Forester XT. (read more...)
	Regular Price: $149.99 On Sale For: $112.46	Quantity:

	Subaru STI Connecting Rod (EJ257)
	This is the factory Connecting Rod that comes in the STI's 2.5 liter EJ257 engine. They are sold individually, or as a set of 4. Perfect if you are rebuilding a wounded engine, or putting a new one together from scratch. Also, make su... (read more...)
	Price: $73.73	Quantity:

	Subaru Timing Kits from Gates
	These Gates Timing kits are near OEM quality for almost half the price! They include everything needed and recommended for timing belt replacements. As you see in the picture, they include the belt, all pulleys, water pump, and tensioner. This is a great kit for doing your scheduled maintenance, or if you are doing an engine swap. These... (read more...)
	Regular Price: $550.00 On Sale For: $289.00	Quantity:

	Subaru Valve Cover Gasket Re-Seal Kit
	This kit includes all the seals needed to re-seal your valve cover gaskets in your turbocharged Subaru. Also, the Subaru Master Gasket kits for the WRX do not include these parts, so they will be necessary if you are planning on piecing together an engine rebuild or hybrid swap. Includes: - Right Valve Cover Gasket (read more...)
	Regular Price: $98.84 On Sale For: $75.00	Quantity:

	Subaru WRX Water Pump Kit
	This is a brand new genuine OEM Subaru water pump and gasket. This is great for people rebuilding your engine or just if you have a broken water pump. ... (read more...)
	Regular Price: $123.92 On Sale For: $99.13	Quantity:

	Brand New STi EJ257 Blank Heads and Valve Covers
	These are brand new, blank OEM EJ257 Heads straight from Subaru. Repairing an engine failure? Building an engine from scratch with your own internals and valvetrain? This is a great option for you, since Subaru no longer offers fully assembled heads as a single part number. These do not contain valves, retainers, springs, cams, seals, gaskets, etc. This is just the blank head casings as pictured. We have a... (read more...)
	Regular Price: $1,294.12 On Sale For: $1,132.00	Quantity:

	Cosworth High Performance STi EJ257 Long Block Assemblies
	After several years of testing and development, the Cosworth High Performance Subaru EJ25 long block has arrived. The CS600 series is designed for extreme track day use and the demanding performance enthusiast. Each assembly is precision built by one of Cosworth's skilled craftsmen using the finest components from their parts catalog to ensure maximum reliability, power, and performance. St... (read more...)
	Regular Price: $12,607.00 On Sale For: $11,977.00	Quantity:

	Crawford High Performance Short Block Assemblies
	Crawford's reputation as an elite Subaru engine builder has continued to grow with the release of several new options from them in long and short block assemblies. These are assembled to Crawford's exacting specifications, and are serialized, so you know and can prove that you have the real deal! There are several variations of these Short Block Assemblies. If you are not sure what you nee... (read more...)
	Price: $3,999.95	Quantity:

	Crawford Performance High Performance Long-Block Assemblies
	Crawford's reputation as an elite Subaru engine builder has continued to grow with the release of several new options from them in long and short block assemblies. These are assembled to Crawford's exacting specifications, and are serialized, so you know and can prove that you have the real deal! There are several variations of these Long Block Assemblies. If you are not sure what you need, or if your... (read more...)
	Price: $9,499.95	Quantity:

	Rear Engine Re-Seal Kit for Subaru
	If you are doing a clutch and flywheel installation, we recommend re-sealing the back side of the motor while you have access. If you are a low mileage car this may not be necessary, but for most applications, it is good peace of mind. This kit includes everything you need to reseal the whole back side of the motor, which you have access to during that installation. The parts are also available individually below the kit.... (read more...)
	Regular Price: $52.52 On Sale For: $39.71	Quantity:

	Cosworth Light Weight Billet Crankshafts
	Order now for free shipping! Increased engine performance often means increased engine speed and load. Original factory crankshafts may not be able to withstand the added stress resulting in catastrophic engine failure. Additionally, factory Subaru crankshaft rod journals are lubricated from only one main o... (read more...)
	Regular Price: $3,999.00 On Sale For: $3,800.00	Quantity:

	Cosworth Performance Subaru Piston Ring Sets For Cosworth Pistons
	We now offer FREE SHIPPING on this item! High performance piston ring set for Cosworth Pistons. Set includes rings for 4 pistons. (read more...)
	Regular Price: $128.00 On Sale For: $122.00	Quantity:

	Cosworth - EJ205/EJ257 Timing Belt Guide
	This item now has FREE SHIPPING! Cosworth's Timing Belt Guide replaces the factory sheet metal timing belt guide to help reduce the possibility of the timing belt skipping a tooth during high rpm use. The original sheet metal timing belt guide can flex from belt deflection when subjected to extreme RPMs causing the timing belt to skip one or more teeth on th... (read more...)
	Regular Price: $95.00 On Sale For: $84.00	Quantity:

	Cosworth Billet Cam Angle Sensor Bracket
	We now offer FREE SHIPPING on this item! Used for mounting the cam angle sensor to the front of Non-North American Spec STI cylinder heads. Useful for adapting our cylinder... (read more...)
	Regular Price: $89.00 On Sale For: $84.00	Quantity:

	Cosworth High RPM Single Valve Spring Set (x16) for EJ205/EJ257
	We now offer FREE SHIPPING on this item! (read more...)
	Regular Price: $325.00 On Sale For: $309.00	Quantity:

	Cosworth Subaru WRX 2.0L Camshafts
	We currently offer FREE SHIPPING on this item! Cosworth has been engineering camshafts for nearly 50 years. That coupled with years of innovative multi valve cyl... (read more...)
	Regular Price: $1,098.00 On Sale For: $1,044.00	Quantity:

	Crawford Cam Timing Adjusters
	Do you have a different thickness head gasket than you motor was designed for? Have you decked your block or heads? Do you have phase one heads on a phase two block? Or do you want to adjust your cam timing to move your power band up or down? If you said yes to any or all of the above then Crawford has a cost effective answer ... (read more...)
	Price: $149.90	Quantity:

	Cosworth 10mm Blueprinted Oil Pump Kit
	We now offer FREE SHIPPING on this product! High performance engines require additional oil pressure because of the increase... (read more...)
	Regular Price: $410.00 On Sale For: $355.00	Quantity:

	Cosworth High Volume Oil Pan for the EJ205 & EJ257
	We now offer FREE SHIPPING on this item! Sustained high RPM’s or prolonged high speed driving will result in elevated oil temperatures. Additional oil volume along with improved oil control will reduce damaging oil temperatures improving performance and reliability. The Cosworth EJ20/EJ25 High Volume Oil Pan is fabricated from both custom and original ... (read more...)
	Regular Price: $629.00 On Sale For: $598.00	Quantity:

	Cosworth Oil Control Baffle Plate
	We currently offer FREE SHIPPING on this item! (read more...)
	Regular Price: $350.00 On Sale For: $325.00	Quantity:

	Cosworth Air Pump Delete Plate Set
	Cosworth developed this part to eliminate the air pump and related valves found on 2006-2010 Subaru Engines. Used for high performance applications or ... (read more...)
	Regular Price: $88.00 On Sale For: $79.00	Quantity:

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