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I have been looking on line, but can't get a simple answer, what will be an over size filter for my 5.7, K&N and Mobile 1.
I went yesterday to advance auto parts, and compared the stock fitting to some larger sizes that I looked up in other forums and it did not look right. what are you guys using?
 

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xrefed using wix filter site...
sizing looks ok. burst pressure looks low...
a little bit more than an 1" longer. Will it fit?


Part Number: 51085 (M1-204) Stock
UPC Number: 765809510852
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Enhanced Cellulose
Height: 3.836 (97)*
Outer Diameter Top: 3.66 (93)*
Outer Diameter Bottom: Closed:
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=6/20
Burst Pressure-PSI: 340
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 21

Part Number: 51515 (M1-301) Not-Stock
UPC Number: 765809515154
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Enhanced Cellulose
Height: 5.197 (132)*
Outer Diameter Top: 3.661 (93)*
Outer Diameter Bottom: Closed:
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=6/20
Burst Pressure-PSI: 290
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 21
 

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Obviously a longer filter will have more filtration capability. In old V8's it was simple to add a longer filter as it was no where near the frame or suspension. On the Commander, the 5.7 filter is really close to the front frame and the threading needs to be taken into consideration as it has to be able to fully unscrew without binding up.
 

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136 Posts
Still why??? Go with OEM or WIX 57899XP or Fram Ultra and don't look back. Your rationale does not make sense even with extended intervals and synthetic oils. The 3.7 & 4.7 should be run with full synthetic due to potential sludge issues which are common among all manufacturers of this vintage. The 5.7 is more forgiving but full synthetic is the way to go.
 
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