Sale price $154.99 Regular price $349.80

This case of filters is a non-stocking item.  When you place the order I will order directly from Fleetguard then send the case to you.  Most of the time I receive orders in 1-3 business days.  Once received the case will be sent to you next business day.

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:     FF5421

Style:        Spin-On Fuel Filter

Service:    Fuel

Media:       Enhanced Cellulose

Height:      7.579 (192.5)*

Outer Diameter Top:  3.72 (95)* 

Outer Diameter Bottom:     Closed

Thread Size:      20X1.5 MM

Max Flow Rate:  8-10 GPM

Nominal Micron Rating:       4

(  )* denotes metric


Gasket Diameters

O.D.  I.D.   Thk.

Attached 2.83 (72)* 2.47 (63)* 0.19 (5)*

Packed      1.174 (30)*         0.79 (20)* 0.085 (2)*


Principle Application

Case, Cummins QSB 6.7L Diesel, Freightliner S2 Bus Chassis, Hyundai, Kawasaki 70ZV Loader, Kenworth Trucks, New Holland, Other.  Upgrade of FF5485.


Interchange Part Numbers

BF7966 3978040 4897897 P550881 P9454 33682 2653231452 3222999092 BF7813 BF7940 BF7957 86654 86966 FSM4166 4897833 1399760 1529640 DP010206 40040300126 65125035026 65125035026A A408064 FF165 FF5420 FF5421 FF5485 FF5612 FFR85420 FFR85485 P10715 GP548 941410755 9414101755 SN40529 SN40542 3034304 263F107071 2992241 504033400 32925932 K1399760PAC 6754716130 6754716140 6754796130 6754796140 53C0303 12990755801 LFF3802 LFF5485 KC188 WK95021 3654 3956 3966 16400LA40A J8621614 FC5613 103142 SK3154 SK3297 J16003A050400 4894548 PSC75 704970231 FF550881 2075482 2R0127177B 14559479 43919943 33654 33956 33966 533654 ND131085 BF7922 86682 4897897 84167233 84412164 87803200 J978040 ND131084 21703110 7005362 4989106 P550880 65125035026 FCX9321 FF5612 FF5790 BG5X9155AA 9414101756 FF1188 FF1246 2103892 11LC70010 2992241 504043765 504292579 32925932 70020348 90031422 LFF5421 166312 WK929X WK960 711853A1 3682 2353548 71102624 72130519 84167233 87646722 87803197 87803200 87803209 F75921 RC376 87803208 PSC75 2R0127177B 3978040 33682