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Toyota 4.0 l 1GRFE Engine failure due to Napa #1348 filter
Posted to Technical Discussion Forum on 4/26/2013 47 Replies


I have had 2 confirmed cases of a WIX/NAPA oil filter #1348 causing restriction in oil pressure on Toyota 4.0 Engines.

I have documented 1 of them on video complete with pressure readings.

These trucks come in with check engine light, ticking engine, and VVT codes.

Oil pressure is between 4-10 psi and drops at 2500.

I need to know if anyone else has seen this issue? We are fixing a customer truck due to his cylinder walls are severely scored due to the pressure loss. These engines have piston cooler/lube injection tubes with spring loaded pressure valves. Similar to Diesel engines.

Please see below for videos.

Michael Simard
Simard Automotive
Fairbanks, Alaska, USA

47 Replies Received (View Replies)


car Vehicle Data

2007 Toyota Tacoma X-Runner 4.0L

Engine4.0 L
Trans6-speed Standard