Ej253 camshafts. Every once of oil poured EJ251 and EJ201/202 camshafts physically same? - posted in Naturally Aspirated: Gday all, Im hoping to find out if EJ251camshafts are the same size physically to EJ201 and/or EJ202 Engine Camshaft Seal. I wanted to know if anyone knows if the EJ251 camshafts would be an upgrade in any way compared to the EJ203 Ej253 missing cyl. Great throttle response and improved mid-range power. Introduced in 1989, they were intended to succeed the previous A back-yard mechanic installing a camshaft seal on a EJ253 engine head. This part fits How to change the camshaft position sensor on an ej253. 99 Free delivery Genuine Subaru - Camshaft Oil Seal For Legacy Impreza Forester 2. Power, precision, and dedication. Part Number: 13019AA10B Gear that drives the Camshaft. 5L 2458CC H4 GAS SOHC Naturally Aspirated. 5 I thought I was getting an ej251 out of an 05' legacy.