WIX 51334 vs. 51381

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Bit of a dilemma here, as far as an '04 Lancer is concerned with a 1.6L inline 4 engine. The OEM filter for this application is a Mitsubishi MD136466 filter, and the WIX equalivant is the 51381:

Originally Posted By: WIX 51381

Height:
3.141
Outer Diameter Top: 3.660
Outer Diameter Bottom: Closed
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 13-19
Anti-Drain Back Valve: Yes
Burst Pressure-PSI: 275
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 25
Gasket Diameters:

O.D.:
2.834
LD.: 2.462
Thk.: 0.200


Since all Mitsubishi filters use a 20 x 1.5mm thread size, and I previously made a bulk purchase of WIX 51334 filters, that was what I installed for this application:

Originally Posted By: WIX 51334

Height:
3.194
Outer Diameter Top: 3.252
Outer Diameter Bottom: Closed
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Burst Pressure-PSI: 280
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Gasket Diameters:

O.D.:
2.475
LD.: 2.173
Thk.: 0.233


Will the 51334 be alright, or should I replace it with an OEM? I don't think I will be able to find a 51381. Any input will be appreciated, thank you!
 
Only thing that would give me some concern is the gasket diameters. I tried a subsitution similiar to this on a motorcycle 2 years back and it leaked when I started it up. Leaked, is maybe the wrong word... about 2 qts dumped on my garage floor in about 3 seconds time.
 
Last edited:
Gasket differences usually work between the 2.7-8/2.3-4 vs. 2.4/2.2 filters. Some man's xref a 2.8 for a 2.4 app.

The bypass valve isn't that far out of whack. A Purolator would be 12-16 generically ...the Wix 8-11.

I would have no issue, assuming there is no fitment issue with the gakset, with doing this part number reduction.
 
If you're going to be using the thread/gasket size of the 1334, try the Wix 1356. It offers better beta ratios. Costs about 50 cents more though, but worth it in my opinion. I don't know if that gasket would work in replacement of the 1381 however, as I have no experience with that filter.
 
Many thanks for the input. There are no leaks or anything like that, so I'll just keep it installed. If it ain't broke, don't fix it!
grin2.gif
Seems to be doing well with the PP 10W-30.

Originally Posted By: ThirdeYe
It offers better beta ratios.


Can I ask what a "beta ratio" is? I've noticed some specification sheets list it and others don't, even though they're from the same manufacturer.
 
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