Cosworth

Cosworth 23mm Circlip

To ensure reliability, piston circlips should be replaced any time the piston is removed from the engine. Price is for one.

Cosworth 23mm Pin, Subaru EJ20/25 Piston

Cosworth 85.0 Bore Ring Pack (3 Rings)

Developed using the latest quality materials, Cosworth Performance Ring sets are designed to meet the demands of the modern high performance engines for higher power output, improved sealing, lower friction and longer life.

Cosworth Air & Oil Filter Service Kit Impreza 1993-2007

Kit contains: 1x Cosworth panel filter 200022701x OEM Subaru oil filter 15208AA12A1x Sump plug washer 

Cosworth Air & Oil Filter Service Kit Mitsubishi Lancer Evolution 7-9 CT9A

Cosworth CSSP005 Performance Air Filter & Oil Service Kit Mitsubishi Lancer Evolution 7-920002277 - Cosworth Air Filter20033600 - Cosworth StickerMD356000 - Mitsubishi Oil FilterMD050317 - Mitsubishi Drain Plug GasketCosworth Performance Air Filters are constructed from a proprietary synthetic, non woven single layer, pleated polyester filter media that requires no oiling. For an OE like fit, the filter housing is injected molded from High Impact Polystyrene or Polypropylene Each Cosworth air filter has been engineered to fit the vehicles original air box providing a true cold air supply to the engine. Cosworth Performance Air Filters also provide increased air flow when compared to original equipment air filters. Improved performanceSuperior filtrationExceptional dust holding capacityReduced restriction (10%+ compared to OE filters)Over 98% efficiencyGenuine Cosworth ComponentDesigned to fit OE

Cosworth Air & Oil Filter Service Kit Subaru Impreza 2008+

PART No. CSSP003 Impreza 2008+         Cosworth High Performance Air Filter         Genuine OEM Oil Filter         Sump Washer         Cosworth small decal

Cosworth Air Pump Delete

Used to eliminate the air pump and related valves found on 2006-2008 Subaru Engines. Used for high performance applications or adapting later cylinder heads to early engines. Seals off the air injection ports at the cylinder heads. Saves weight, reduces complexity, cleans up engine compartment. Machined from solid aluminum with a "Cosworth blue" anodized finish. Mounting hardware included.

Cosworth Big End Bearings +.50

Cosworth Comp Ring 87Mm

Cosworth Evo 4B11 Rod Brg Set Size 0

Cosworth Evo 4B11 Rod Brg Set Size 2

Cosworth Evo X Conrod, Stroker Piston

Cosworth Forged Steel Connecting Rods

Cosworth 20002587 Forged Steel Connecting Rods Subaru WRX STI EJ25 2.5LThe connecting rod is the vital link between the piston and power. 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 are manufactured from high strength 4340 (EN24) steel and machined to precise tolerances. Specifications: Packaging is improved to industry standards and a detailed data card included.Rods now include genuine Cosworth H11 tool steel rod bolts (260,000psi).Proprietary forging made in the USA.Detailed machined work to maintain optimum weight and strength.Solid Beam design for high power applications"Radial Truss" small end for superior strength and reduced reciprocating massManufactured from 4340 (EN24) steelCenter to Center - 130.48mmP.E. Bore - 23.03mmB.E. Bore - 55.01mm

Cosworth Gudgeon Pin 22Mm 4G63 Piston

Cosworth Head Gasket / Nissan VR38DETT (3.8L) / Bore = 98mm T ~ 1.1mm (Pr)

Cosworth Head Gasket / Nissan VR38DETT (3.8L) /  Bore = 98mm  T ~ 1.1mm  (Pr)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 manufactured from pre-coated die cut stainless steel resulting in uniform coating distribution and consistent shape.Each gasket is carefully engineered with the following features:Individual die cut layers of stainless steel with superior consistency compared to laser cut gasketsPre-coated stainless steel with a 0.25 micron layer of nitrile rubber ensures consistent distribution of coating with no high or low areasManufacturing dimensional tolerance of  +/- 0.001"Die cut manufacturing process ensures smooth edges, unlike laser cut gasketsCosworth gaskets feature a "folded stopper" layer for additional clamping force around each cylinder.  The width of sealing area is specific for each application thereby providing ultimate sealing propertiesAvailable in a range of thicknesses for specific applications

Cosworth Head Stud Subaru COSWORTH Head Stud Subaru EJ257/205/207 M11 single/205/207 M11

COSWORTH Head Stud Subaru EJ257/205/207 M11 singleSince it was formed in 1958 by Mike Costin and Keith Duckworth, Cosworth has become the most successful independent engine manufacturer in history as well as one of the market leaders in performance electronics, with a string of driver and manufacturer titles to its credit in a wide range of formulae with impressive performances in Formula One, IndyCar, Champ Car, WRC, sportscars and MotoGP.Cosworth has been at the forefront of motorsport activity for over 50 years and is a brand synonymous with success. Cosworth continues to develop and supply exciting powertrain and electronics products for use at all levels of the sport, from class leading off the shelf products at clubman level, through to bespoke state of the art developments for the pinnacle of the sport.

Cosworth High Performance Engine Bearings

Main Bearing Set -Tri Metal: SIZE 0Engine bearings are one of the most vital components within an engine and are often overlooked when considering high performance upgrades. Performance engineered, multi-layer bearings generate less heat than normal bearings by reducing friction. Cosworth race bearing sets feature unique combinations of design, metallurgy and engineering to deliver performance in extreme conditions. Cosworth race bearings sets are available in three sizes to accommodate most applications.Engineered with the following features:High strength overlay plate with reduced thickness for better oil control and less frictionHardened steel backing on all connecting rod bearingsIncreased crush for better retention3/4 grooving on main bearings providing optimum oil supplyTight consistent wall tolerancesOversize chamfers where applicableFlash plating eliminated for improved heat transferTested to over 1000 horsepower!Our bearings are available in 3 sizes: 0 , 1, 2. We do not offer undersized bearings for ground crankshafts.Size 1 is what we used to call "STD"Size 2 is what we used to call "RACE"Size 0 provides .025mm or .001" less oil clearance than our size 1 bearingSize 2 provides .025mm or .001" more oil clearance than our size 1 bearingBearing half shells can be mixed and match to provide the incremental changes in oil clearance However it is imperative that bearing clearances are measured before selecting the appropriate bearing size.

Cosworth High Rpm Valve Spring Set (16) Nissan Sr20Det (2.0

Cosworth Honda K20A 86.25Mm 12:1Cr

While Stocks Last!!

Cosworth Honda K20A 86.5mm 12:1cr

COSWORTH HSK 4B11T EVOX H11 11mm

COSWORTH HSK 4B11T EVOX H11 11mmSince it was formed in 1958 by Mike Costin and Keith Duckworth, Cosworth has become the most successful independent engine manufacturer in history as well as one of the market leaders in performance electronics, with a string of driver and manufacturer titles to its credit in a wide range of formulae with impressive performances in Formula One, IndyCar, Champ Car, WRC, sportscars and MotoGP.Cosworth has been at the forefront of motorsport activity for over 50 years and is a brand synonymous with success. Cosworth continues to develop and supply exciting powertrain and electronics products for use at all levels of the sport, from class leading off the shelf products at clubman level, through to bespoke state of the art developments for the pinnacle of the sport.

Cosworth Hsk 4G63 M11

Cosworth Hsk Subaru Wrx Sti 2.5 11Mm

Cosworth Induction Kit Subaru Impreza STI 2008+

Cosworth's High Flow Intake Systems feature increased diameter, large smooth radius bent aluminium inlet tubes for superior air flow management coupled with a high flow air filter for maximum air flow and performance.Each kit includes an integrated heat shield designed to isolate the air intake from engine heat - delivering cold air into the engine for superior power conversion. The filter element is large, conical in shape and engineered to dramatically reduce intake restriction resulting in additional power and torque.Up to 15% More PerformanceLightweight aluminium mandrel shaped inlet tube for maximum airflowConical Cosworth blue cotton gauze cleanable air filter with Cosworth embossed dry carbon composite endIntegrated heat shield for cold air isolationHardware kit included for easy, perfect fit

Cosworth Light Weight Billet Steel Crankshaft 79mm Stroke Subaru EJ25

Cosworth is one of the most trusted companies in motorsport due to their rich racing history. They employ some of the worlds best designers and engineers to produce racing products that work in concert together to produce reliable results from full-blown race cars, to street monsters.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, many OE crankshafts rod journals are lubricated from only one main oil feed. Cosworth billet crankshafts feature full-flow oiling where by each rod journal is lubricated from two main sources. This provides superior lubrication during sustained high rpm use preventing rod bearing failure.Cosworth Subaru crankshafts are manufactured entirely from high grade steel in a light-weight, high strength design with a unique Isotropic Super Finish (ISF®).

Cosworth Low Temp Motorsport Thermostat Subaru EJ20 EJ25

High performance racing engines require upgraded and improved cooling systems for maximum reliability. One important component of the upgraded cooling system is a thermostat that opens to allow coolant passage through the engine and cooling system at reduced temperature compared to the original equipment thermostat. Reducing the temperature by approximately 10 to 15C compared with that of a standard thermostat, the Cosworth LowTemp Motorsport Thermostat improves coolant circulation through the engine by starting the process earlier than the original equipment thermostat. Cosworth LowTemp Motorsport Thermostats are engineered with the optimum temperature range in mind for high performance racing use as it is very easy to over cool the engine by either removing the thermostat completely or using a thermostat that is not designed for the specific application. Additionally, over cooling can cause engine damage by preventing critical engine components from reaching their ideal operating temperature, altering the required clearances for safe operation. Another important feature of Cosworth LowTemp Thermostats compared to other brands is the ability to precisely control the flow of coolant when the valve opens. Inferior brands allow the coolant to surge thereby causing unstable temperatures and even temperature fluctuation that can cause severe engine damage and make it difficult to properly tune or calibrate the engine. When combined with a correctly sized radiator and other high quality cooling system components, the Cosworth LowTemp Motorsport Thermostat will help to safely maximize engine performance by controlling the engine temperature at an optimum level .

Cosworth Low Temp Motorsport Thermostats Mitsubishi Lancer EVO 8

High performance racing engines require upgraded and improved cooling systems for maximum reliability. One important component of the upgraded cooling system is a thermostat that opens to allow coolant passage through the engine and cooling system at reduced temperature compared to the original equipment thermostat. Reducing the temperature by approximately 10 to 15C compared with that of a standard thermostat, the Cosworth LowTemp Motorsport Thermostat improves coolant circulation through the engine by starting the process earlier than the original equipment thermostat.70mm ThermostatCosworth LowTemp Motorsport Thermostats are engineered with the optimum temperature range in mind for high performance racing use as it is very easy to over cool the engine by either removing the thermostat completely or using a thermostat that is not designed for the specific application. Additionally, over cooling can cause engine damage by preventing critical engine components from reaching their ideal operating temperature, altering the required clearances for safe operation. Another important feature of Cosworth LowTemp Thermostats compared to other brands is the ability to precisely control the flow of coolant when the valve opens. Inferior brands allow the coolant to surge thereby causing unstable temperatures and even temperature fluctuation that can cause severe engine damage and make it difficult to properly tune or calibrate the engine. When combined with a correctly sized radiator and other high quality cooling system components, the Cosworth LowTemp Motorsport Thermostat will help to safely maximize engine performance by controlling the engine temperature at an optimum level .

Cosworth Main Bearing Set - Zk Vr38Dett Wpc

Cosworth Main Bearing Set Size 2 - Subaru WRX/STI EJ25 EJ20 Engines

Engine bearings are one of the most vital components within an engine and are often overlooked when considering high performance upgrades. Performance engineered, multi-layer bearings generate less heat than normal bearings by reducing friction. Cosworth race bearing sets feature unique combinations of design, metallurgy and engineering to deliver performance in extreme conditions. Cosworth race bearings sets are available in three sizes to accommodate most applications.Key Features:High strength overlay plate with reduced thickness for better oil control and less frictionHardened steel backing on all connecting rod bearingsIncreased crush for better retention3/4 grooving on main bearings providing optimum oil supplyTight consistent wall tolerancesOversize chamfers where applicableFlash plating eliminated for improved heat transferTested to over 1000 horsepower!Our bearings are available in 3 sizes: 0 , 1, 2. We do not offer undersized bearings for ground crankshafts.Size 1 is what we used to call "STD"Size 2 is what we used to call "RACE"Size 0 provides .025mm or .001" less oil clearance than our size 1 bearingSize 2 provides .025mm or .001" more oil clearance than our size 1 bearingBearing half shells can be mixed and match to provide the incremental changes in oil clearance However it is imperative that bearing clearances are measured before selecting the appropriate bearing size.