The OEM 2JZ oil pump is prone to front main seal failure under high boost conditions. PHR takes a brand new Toyota oil pump and modifies it to reduce pressure at the front main seal, raise oil pressure to increase internal flow, and check and clearance the rotor assembly. All pumps are hand-modified to ensure the highest quality.
We highly recommend adding on the PHR double O-Ring spring cap! OE pumps are prone to leaking from the relief valve cap straight from the factory, something you won't discover until you fire your fresh build up for the first time. PHR has CNC-machined their own cap with a double O-ring seal, helping you avoid a costly and time consuming disassembly process to get to a leak.