AlbertF Posted October 27, 2019 Share Posted October 27, 2019 Hello all - my first post on here, with a technical question. We just acquired a 2003 Legacy Spec B from Japan (2005+ North American body style). Well-maintained, most things look very good, runs great, but it needs a timing belt replacement. The coolant is low, and I can smell coolant in that area after running the engine, so I expect that the water pump seal is going and weeping coolant. The question is, does this car need the 3 nipple water pump? It's an EJ20Y with a five speed manual. I have been researching this online, but I have not been able to cut through the confusion. Does the car have an oil cooler or not? I want to order parts before pulling everything apart. I suppose I can order both water pumps and send back the one I don't need, but it would be great to have clarity on this point. Thank you for your help! Link to comment Share on other sites More sharing options...
Andy_Mac Posted October 28, 2019 Share Posted October 28, 2019 No oil cooler. Easiest way is to chuck your chassis number into partsouq. Gives you diagrams with almost every part on the car. The stock one for a facelift(probably the same for pre) JDM 20Y is X2111AA240 For my next build i grabbed this one as it has the cast impellor which flows better than the stamped alternative 21111AA026 2000 Legacy B4 RSK - SOLD 2006 Legacy BP5 GT Spec B wagon - Garage Thread 2011 VW T5 van 2.0L of turbo diesel awesomeness Link to comment Share on other sites More sharing options...
AlbertF Posted October 28, 2019 Author Share Posted October 28, 2019 No oil cooler. Easiest way is to chuck your chassis number into partsouq. Gives you diagrams with almost every part on the car. The stock one for a facelift(probably the same for pre) JDM 20Y is X2111AA240 For my next build i grabbed this one as it has the cast impellor which flows better than the stamped alternative 21111AA026 Just checked out partsouq. I hadn't heard of it. It's an amazing resource, and yes, you identified the correct part. Thanks for information! Link to comment Share on other sites More sharing options...
AlbertF Posted November 3, 2019 Author Share Posted November 3, 2019 The correct water pump for the EJ20Y is the "3 pipe" version. I used the Gates 328 timing belt kit. I hope this information helps someone in the future. The old pump (OE) had evidence of coolant coming out of the weep hole. Bearings were good except for the small idler roller next to the tensioner. I'm hoping for a good outcome with Gates kit. I do plan to change the belt and pump every 100 000 km, and give the bearings a careful listen every time I service the car. If the pump and bearings make it past 20 000 km, I expect they will perform fine. Link to comment Share on other sites More sharing options...
Zac88 Posted November 10, 2019 Share Posted November 10, 2019 Just used a gates kit couple years ago, I would not recomend using the Gates water pump. I ended up grabbing a Aisin one. Link to comment Share on other sites More sharing options...
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