Sale price $250.99 Regular price $463.50

These filters kits are a stocking item.  Sometimes however, we do run out but when ordered if we do not have them in stock, we will order directly from Fleetguard then send the filters to you.  Most of the time I receive orders in 1-3 business days from Fleetguard.  Once received the filters will be sent to you next business day.  If you are in a hurry message me and we will check inventory.

All cross numbers listed will spin on and seal.  If you need more exact crossovers such as size or micron ratings message me.  The crosses listed are only a guide if specifics don’t matter.  Use the pictures shown as a help in determining if this filter is right for you.


We are a Fleetguard Filter distributor that purchases new filters directly from Fleetguard filters from stores going out of business or old inventory stores want to get rid of. Non Fleetguard filters can be from any brand name that are not purchased as New. Some filters may have OE boxes, seals, or plastic wrap missing. Some may even have slight dings or minor surface rust. I do throw away filters I would not recommend using. If any filter has any rust or dings, I will inform you and show pictures. If I feel the filter will be ok to use, I will list them. We also purchase cases of brand new Fleetguard filters to keep in stock under special pricing for our customers that wishes us to stock, as long as they are common filters that sell. We also offer volume discounts on multiple cases of Fleetguard filters. If you control inventory for a shop and want to get ready for a new season, send be a message or contact me for a discount. In turn you will get the lowest prices anywhere. If you wish to purchase a case of Fleetguard filters you don’t see listed in my store most likely I can order these filters for you also. All Fleetguard are sold by the case unless smaller lots are shown. All filters of other brands will all be crossed and grouped together to the Fleetguard filter they represent and sold by that part number in a lot. We all want the best prices of anything we buy. If you see any filters or parts in my store that have a higher price than other stores you see in online, send me a message.

We also have several parts that are new or used from Honda vehicles or other makes. Soon we will be a source of many used auto parts. All used parts will be cleaned and if possible tested to insure they work. Stay tuned for more parts to come.

We do purchase new and old inventory and also vehicles that will be sold for parts. If you have a shop and those darn filters are just collecting dust, or cars rotting away in the back message me. Send me a list of filters, parts or cars you have and how much you are asking and your location. I will look up part numbers you send to find the wholesale value and send an offer to you. The more presentable the filters and vehicles look the more I offer.

Thank You for visiting AYP-Parts.

No Returns offered if the part is not correct without contacting us first before order is made with the part number you need.  The cross-reference numbers listed are only as a guide.  Any charts you see online may not be 100% correct.  Some manufactures use the same part numbers but may be a different part.  We will confirm that this part will work for you when you contact us.


Product Specifications
Condition: New
Brand: Fleetguard
Part Number: FS43257
Style: Spin-On Fuel/Water Separator Filter
Service: Fuel
Type: Full Flow
Media: Microglass
Height: 9.118 (232)*
Outer Diameter Top: 4.537 (115)*
Outer Diameter Bottom: 3.735 (95)*
Inside Diameter Top: 1.17 (30)*
Inside Diameter Bottom: Closed
Thread Size: 15X4 MM
Max Flow Rate: 1
Nominal Micron Rating: 5
Operating Temp. (min): -40
Operating Temp. (max): 219
( )* denotes metric

Gasket Diameters
              O.D.              I.D.             Thk.
Packed 4.188 (106)* 3.906 (99)* 0.141 (4)*

Principle Application
Dodge Ram Pickup w/ 6.7L Cummins Diesel (07-09), Sterling Bullet all with 6-408 (6.7L) Turbo Diesel Engine. Complete Filter (shell and cartridge) For normal filter service, use the FS43258 filter kit. The filter shell of the FS43257 is intended for reuse. Follow the instructions accompanying the filter and protect the filter shell from inadvertent damage.

Interchange Part Numbers
BF1392SPSKIT 5183410AA 4936025 P550907 89723 05183410AA 68061633AA 5257769 FS43252 FCS10726 LFF3252 LFF3257 4723 P550799 FS550907 24723 FF893DL GF1920 FF1167SPS 56080

All Applications







2007 - 2009

L6 6.7L 408 CID


RAM 4500

2008 - 2009

L6 6.7L 6686cc 408 CID


RAM 5500

2008 - 2009

L6 6.7L 6686cc 408 CID



2008 - 2010

L6 6.7L 408 CID Cummins Turbo Diesel