HD Super Premium 5 vs Napa 7148 5 micron oil filter

[rocketmangb]

These pictures should be self explanatory !
The Napa filter just came off my engine so I wasnt gonna waste a new one !
Bad enough the HD filter set me back $10.75 !

[Jollly Rogers]

Obviously built to a HD price point...
Joe

[shanneba]

Looks likes it is made by WIX- should be a good filter for Sportsters.
NAPA Filter:

Part Number:	7148
UPC Number:	765809235663
Style:	        Spin-On Lube Filter
Service:	        Lube
Type:	        Full Flow
Media:	        Synthetic
Height:	        3.404 (86)*
Outer Diameter Top:	2.921 (74)*
Outer Diameter Bottom:	Closed:
Thread Size:	3/4-16
By-Pass Valve Setting-PSI:	8
Anti-Drain Back Valve:	        Yes
Beta Ratio:	                2/20=6/20
Max Flow Rate:	                7-9 GPM
Nominal Micron Rating:	        5

The beta ratio indicates it filters 50% at 6 microns and 95% at 20 microns.

WIX 57348 Chrome 57148 Black Data :

WIX Part Number:	57348
UPC Number:	765809573482
Style:	Spin-On Lube Filter
Service:	Lube
Type:	         Full Flow
Media:	         Synthetic
Height:	         3.404 (86)*
Outer Diameter Top:	2.921 (74)*
Outer Diameter Bottom:	Closed:
Thread Size:	3/4-16
By-Pass Valve Setting-PSI:	8
Anti-Drain Back Valve:	        Yes
Beta Ratio:	                2/20=6/20
Max Flow Rate:	                7-9 GPM
Nominal Micron Rating:	        5

I am currently running the HD SuperPremium 5 and hope to have a UOA / particle count later this year I'll either run another HD 5 micron or try a WIX next.

[ReddTigger]

Looks like the HD filter offers more media material to filter with.

[jzink0883]

I need help. I'm sure rocketmangb's pictures are self-explanatory to many, if not most, on XLF. I can see differences between the Harley and the NAPA (aka Wix) filter. I don't know enough to say what makes one better than the other.

[ReddTigger]

the larger media will typically mean more filtration, and with more holes in the intake, will allow for larger flow or a less restricted flow. Looks like the Napa filter uses a spring to hold the rubber diaphram against the inlet, where the hd filter is larger and doesn't need the spring at the top, but uses a small piece of metal at the bottom to lift the element off the filter housing.

[jzink0883]

Originally Posted by ReddTigger

the larger media will typically mean more filtration, and with more holes in the intake, will allow for larger flow or a less restricted flow. Looks like the Napa filter uses a spring to hold the rubber diaphram against the inlet, where the hd filter is larger and doesn't need the spring at the top, but uses a small piece of metal at the bottom to lift the element off the filter housing.

ReddTigger,

I know that oil-filter threads can be like oil threads.

I noticed the differences that you cite. The online prices for the H-D, NAPA, and Wix filters are about the same.

Question: Is there a compelling reason for me to not continue buying the H-D filter?

[XL Ed]

Is there a bypass in the hd filter? Is that what the spring is for?

[rocketmangb]

Both have the top bypass.
Meaning if the filter does bypass it just runs across the top of the filter unlike the old filters which had a bottom bypass (many still do) which would wash the crap out of the media right in to the engine.

[hexnut]

The Harley Davidson filter is working just fine for me so I will continue using them. I do have a filter magnet I used to use on my truck filter. I believe it will fit the Harley filter. I may put it on and see what happens.