Fuel Filter substitute brand

[knotflying]

I have the 4BY2 Yanmar and as we know Yanmar brand products can be expensive. I was looking to see if there was a substitute for the secondary filter and came across a Mann Filter that seems to be a substitute. The added feature is that it seems to have, on the end, the ability to use a standard wrench to screw it on and off. Definitely much easier than using the strap wrench.
The Mann part number is WK1150/2. Here is a link to the site that I found it on. At $53.00 definitely something to consider. Has anyone, by chance, used this?

https://killerfilter.com/filters/MANN/WK-1150-2_MANN-filter.html

 

[Hydraulicjump]

I believe this cross-references with the Fram P11057, which I installed on my mechanics advice. $20 on Amazon. The goofy end on the filter makes things a bit cramped on installation, however.

 

[trailertrawlerkismet]

Mike:

I have not used the Mann fuel filter you mentioned but I'm very interested in what we find out. I have thou used Mann oil filter HU 722z as our engine oil filter (Yanmar 4BY2) for three years and it works just fine, easier to obtain and a little less expensive.

Jim

 

[knotflying]

I believe this cross-references with the Fram P11057, which I installed on my mechanics advice. $20 on Amazon. The goofy end on the filter makes things a bit cramped on installation, however.

I just saw it for $13.75 on Amazon Prime. I ordered one to check it out. The Fram part number shows it as a cross reference for the Mann WK 1150/2

 

[sheral]

If you can find a cross to a Wix / Napa Gold, or Mahle filter, they are also rated very highly.

 

[nzfisher]

Are you talking about the primary (attached to engine block) 2 micron filter? This is a pretty critical filter for the high temp single rail BMW and it had better be right. It would be great if this where truly an accurate substitute.

 

[knotflying]

Are you talking about the primary (attached to engine block) 2 micron filter? This is a pretty critical filter for the high temp single rail BMW and it had better be right. It would be great if this where truly an accurate substitute.

Yes, there is some terminology confusion here. I always assumed that the primary was the one that the fuel first went into and the secondary was the one on the engine.
I have a call into Fram to ask about the microns in the filter. Curious as to how you know that the Yanmar filter is 2 microns?

 

[sheral]

Yes, unless I'm missing something here, the primary is the first filter after the tank and the filter on the engine is usually called the secondary (assuming you only have two filters).

 

[Hydraulicjump]

I believe this is the correct terminology. The primary filter is first, usually 10-30 microns depending on which filter you use (my mechanic says go with ten and put a vacuum gauge on it). The secondary is the one mounted on the engine. I believe, but admit to now being a bit unsure, that spec calls for 2 micron. But surfing around the net I can't confirm this. Since anything less than 10 should fit through the injectors (or so I am told), I am not sure why the 2 micron size is called for.

I have 75 hours on the Fram filter with no leaks and no hassles. Still, the plastic end piece gets in the way when you go to put it on.

 

[NorthernFocus]

One caution about using third party filters is whether they are effective at knocking out water. In higher cost filter elements (such as Racor) the water separation is achieved by use of hydrophobic filter medium. It is highly doubtful that significantly cheaper elements use anything beyond simple paper media. Granted the water separation capability is more important on the primary(i.e. first level of filtration).

There's wisdom in the saying regarding no such thing as a free lunch.

By the way, it is very common for secondary filtration have tighter media. And plugging injectors is not the only reason for filtering to such a tight tolerance. Over time solids in the fuel cause wear in fuel system components. It can be more of a chronic than critical concern and may not manifest itself for many hours of operation. For those who don't put many hours on the engine it will likely never be an issue if looser secondary filtration is used.

There is a lot less risk in using third party oil filters due to the type/quality of the media not being as important.

 

[knotflying]

Now this could blow your mind. For the hell of it I ordered the fram filter P11057 from a supplier on Amazon. Price $13.95 free shipping via Prime member. It arrived and was in a Fram box, however the filter was a Mann filter # WK1150 /2, which is the filter I had seen as a replacement for our filter and was priced at $32.50 plus shipping from another supplier. It seems like the world of filters may be like many other products we buy, all made by the same company, but labeled differently.

I am still waiting to hear back from Fram regarding the microns in their filter. In my research I have found that the industry relies more on an efficiency rating than microns since filter composition can be different and it is actually the performance that is important, not necessarily the use of material to construct it. Therefore, a filter that is to be used for diesel fuel that passes through injectors should have a filter efficiency of 98%. In most cases a filter with 98% efficiency will contain 2 micron elements as part of the composition.

To be continued...

 

[NorthernFocus]

...In my research I have found that the industry relies more on an efficiency rating than microns since filter composition can be different and it is actually the performance that is important, not necessarily the use of material to construct it. Therefore, a filter that is to be used for diesel fuel that passes through injectors should have a filter efficiency of 98%. In most cases a filter with 98% efficiency will contain 2 micron elements as part of the composition...

Weeeell almost. The micron rating is not indicative of the media but of the particle size that the filter is claimed to remove. Efficiency is a meaningless number without an associated micron rating and vice versa. Also, there are different industry standards for filters depending on what they are used for. For example automotive oil filters (in the USA) comply with SAE standards.

Typically, if a filter is rated as a 10 micron filter, that means it has been tested and proven to remove 50 percent of particles 10 microns or larger. "High efficiency" filters theoretically remove 98 percent of particles at the rated particle size.

In my professional career I've had many opportunities to spec fuel and oil filters for industrial equipment. The only thing for sure is that one needs to read the fine print when evaluating specs. For our purposes as boat owners, one can assume that from a given manufacturer, a smaller micron rating filters more smaller particles that one with a larger micron rating. Exactly how much filtration is achieved... who knows. If one does want to get to the bottom of it however, reading blogs/forums isn't likely going to get you there. To do so one needs to find out what standard/specification the filter manufacturer complies with and then get a copy of said spec.

Also as I stated in a previous post, when filtering diesel, the water removal capability is as/more important than micron rating.

 

[NorthernFocus]

The below quote is straight from Parker/Racor literature. Note the stated efficiencies are specific to Racor micron ratings. There is no assurance of the same efficies of other manufacturers' filters at the same micron ratings.

Racor makes filters with various filtration
efficiencies, but its standards for non-OEM (Original
Equipment Manufacturer) are 2, 10, and 30 micron
filter elements. The actual efficiency ratings for these
are 98%, 95%, and 90% respectively. Racor also
makes use of a 7 and 20 micron filter medium which
are used to meet certain engine manufacturer’s
requirements for a final filter and a primary filter.

Racor’s 2 micron filter medium should only be used
in final or secondary filters where the fuel is first
filtered by a primary filter. The primary filter for a 2
micron final filter should use a 10 micron medium.
The exception in using a 2 micron filter in place
of a primary filter is to obtain high-efficiency water
separation, and is usually used in marine applications
where the fuel supply may be cleaner but also may
contain water more often. If the installation can allow
the use of a filter large enough, then a 2 micron filter
can serve in a system as the only filter in that system.

 

[knotflying]

Actually that is the information I was referring to. And perhaps I misunderstood it. I made the assumption that if a filter was rated at 98 % efficient then it most likely had. 2 micron capability.

 

[trawlerdeejay]

The Fram secondary fuel filter P11057 mentioned in 2 posts on September 2015 as costing $13.95 and @20- a year later is now $46.95.

 

[trailertrawlerkismet]

A few months ago I bought a Mann WK 1150/2 for our 2012 R27 powered by Yanmar. There was a cross reference for this "fine filter" to work. Fast forward to today when I went to change out all of my fuel filters. When I came to this one I found it would not fit onto my engine fuel filter mount. Upon further notice I saw that the Mann was longer then the Racor/Parker I had taken off and or the OEM Yanmar filter. So the moral of the story for me is don't order one filter and pay $40 just to find out it does not work and then have to go out and buy the $100 Yanmar filter. Good news they had 6 of them in stock in Marathon. If you've bought a Mann for a spare you should be aware of the problem I had. Call, post or PM me with any questions.

Jim F

 

[knotflying]

Funny how we are all guilty of it. We spend thousands of dollars on our boats. Hours cleaning and waxing. Fuel, marinas, campgrounds etc, yet we try to squeeze a few bucks on our filters and other supplies. As a kid I had a neighbor woman who used to say to me, "cheap is dear". That has come back to bite me several times in life. Somehow we seem to fall into that trap over and over. And then it was Einstein who said, " Insanity is doing the same thing over and over again and expecting different results.". Hence the name Tugnut?

I feel your pain Jim! (Ranger has no crying emoji)