TOMEI N2 OIL BLOCK For SILVIA 180SX (R)PS13 S14 S15 SR 193068Brand TOMEI Product Number 193068 Compatible Car SILVIA 180SX (R)PS13 S14 S15 Compatible Engine SR Product Description The SR20 engine's factory oil block tends to fail due to the weak oil filter sensor screw which often breaks. We here at TOMEI had found the problem during professional racing over a decade ago, so we designed & produced this upgrade oil block which solved the problem. We had later discountinued this product after the end for the N2