Cosworth Blueprinted Oil Pump w/ High Pressure Mod & Install Kit

Part #: COS1 KK3928



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Return Policy | Shipping



Brand: Cosworth
Increased Pressure Over Stock: Yes
Increased Volume Over Stock: No
Mfgr. Warranty: No Warranty
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


Subaru Impreza
WRX STI 2004, 2005, 2006, 2007WRX STI Limited 2007WRX 2002, 2003, 2004, 2005, 2006, 2007WRX TR 2006, 2007WRX Limited 2006, 2007WRX Sedan 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Premium Sedan 2010, 2011, 2012, 2013, 2014WRX Premium Hatchback 2010, 2011, 2012, 2013, 2014WRX Limited Sedan 2010, 2011, 2012, 2013, 2014WRX Limited Hatchback 2010, 2011, 2012, 2013, 2014
Subaru Legacy
GT Limited 2005, 2007, 2008, 2009GT 2005, 2006GT spec.B 2006, 2007, 2008, 20092.5GT 2010, 2011, 2012
Subaru Forester
XT 2004, 2005, 2009XT Premium 2005, 2010, 2011, 2012, 2013XT Limited 2006, 2007, 2008, 2009, 2010Sports 2.5 XT 2008XT Touring 2011, 2012, 2013
Subaru Outback
XT 2005, 2006XT Limited 2005, 2007, 2008, 2009
Subaru Baja
Turbo 2004, 2005, 2006
Saab 9-2X
Aero 2005, 2006

High performance engines require additional oil pressure because of the increased demand placed upon various components within the engine. The Cosworth High Pressure Subaru EJ20/EJ25 series oil pump is modified to increase oil pressure helping to ensure superior lubrication. Each pump is carefully inspected and de-burred for unobstructed oil flow. Perfect for high performance daily use Each kit includes all required mounting hardware and seals.
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  • AnswerQ: everything included?  guest55c8d82bcaae52f460a9c495 1 year ago

    does this come with the tribond and proper seals? Couldn't find the subaru tribond on RSD

    • A: We have the Super Three Bond available as part number SUB 004403007 on the website. This unit comes with O-rings and other seals but does not include the Subaru bond.

      Nick S. 1 year ago

  • AnswerQ: Fitment   Jonlee1989 2 years ago

    Would this fit my 2008 Legacy GT Limited

    • A: This is a confirmed fit for a 2008 Legacy GT Ltd.

      Spencer H. 2 years ago

  • AnswerQ: Type of pump  gorilla 3 years ago

    ok. factory pump of what year?

    • A: This would be a 04-07 STi oil pump. For 08+ Sti pumps its a different part number from Cosworth.

      Kirill C. 3 years ago

  • AnswerQ: Type of pump  gorilla 3 years ago

    this is a 11mm pump like the 08+ bit modifier to provide more pressure?

    • A: This pump is a factory oil pump modified by Cosworth to supply higher pressure to the motor.

      Nick S. 3 years ago

  • AnswerQ: Good upgrade   nickWRX 3 years ago

    Is this a good upgrade for a 07 wrx with cobb stage 2 that's daily driven I'm planning on upgrading my timing belt water pump while I'm there should I upgrade my oil pump?

    • A: Unless you are seeing heavy track use typically an upgraded oil pump is not required.

      Nick S. 3 years ago