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Another Fuel Filter Question

5742 Views 11 Replies 8 Participants Last post by  diesel
Hello all.

In an attempt to change my fuel filter, I ordered a new fuel filter, part # 23456595, from GM Parts Direct. I received the filter, and last weekend I went to change it. When I removed the old filter, I noticed it was different than the one I had received. The filter removed from my car looked exactly like the one pictured below (picture reposted from This Thread). It has the six tabs on the bottom of the filter which "lock" in to the tabs inside of the filter housing.

Yellow Water Wheel Auto part Rim

I had read about the change from the original part number 22937279 to 23456595 which supposedly has a solid circle instead of tabs. @revjpeterson talked about this change both in @diesel 's Fuel Filter DIY Thread and in the Fuel Filter Part Numbers thread.

However, the filter I received from GM Parts Direct had neither the tabs nor the solid circle.
Product Auto part Rotor

The top of the filter has GM#23459023 on it even though my invoice from GM Parts Direct has the correct number, 23456595.

I contacted GM Parts Direct thinking they pulled the wrong filter, and they are claiming that part #23459023 does not exist and that I do have the correct filter. I am not able to find anything using a search with that number either.

It seems as though the person in the first thread I linked may have had a similar filter as they describe it as "Diesel Cruze Fuel Filter w/o Clamps".

I have not tried to fit this filter in the housing to see if it will fit snug as I don't want to void being able to return it. It seems identical to the old filter in all ways except the bottom circle/clamps/tabs.

For those of you who have changed your own filters, have you run across this? What does your most recent one look like?
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My first thought would be that some retailers are purchasing cheap knock off filters made in China! They get them for next to nothing and sell them at discount prices compared to dealer pricing. The tabs could be removed to get around patent issues? Functionally they may be the same as long as the quality and the seals still work properly for sealing purposes but does one know for sure?? Also... do we know why the tabs were on the original filter design?? This is another reason I've been investigating Racor and other alternative filters for a replacement as one knows what company is standing behind the product and not just some China made cheap knock off with no commitment to the required filtering capabilities. Racor, Fleetguard and others have been in the business of diesel filters for years supplying the big rigs with reliable diesel fuel filtering equipment.

In examining the tabs and filter housing one can see that the tabs lock the filter in place with a side effect that makes the filter hard to remove the from the housing when its time to replace. The real question...does eliminating the locking tabs cause side effect problems or was it just an over design on the original filter?? Will vibration cause the filter side movement in the housing without the locking tabs thereby making the o-ring seals ineffective and/or internally leaky allowing unfiltered fuel to enter the injection system??

Get a photo of the filters the dealers are selling and see whether the tabs are still used? If the tabs are remove then maybe its ok but if they are selling filters with tabs it would seem to suggest the tabs are a integral requirement of the original design enabling the seals to function properly.

Another way to get the filter is to purchase the complete filter housing assembly. I was able to get the entire new OEM housing and filter from ebay for $39.95 including shipping. The packaging, filter housing and filter did have "made in Czech Republic" printed along with "AC Delco" and numbers all over everything.
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