A Can, Not a Cartridge
Kobelco's -8 fuel system mixes both designs, which is why the SK200-8 order goes wrong so often. This filter is a spin-on: steel can, thread, gasket, nothing to seat and nothing to re-use. The 94 mm cartridges in the same system are bare elements that drop into a housing — and they come in three numbers that measure within 12 mm of each other. Buyers who order "the SK200-8 fuel filter" and get a can when they needed a cartridge, or the reverse, are not being careless; the parts system genuinely contains both.
Sakura's sheet for the FC-55241 equivalent gives 210 mm high, 108 mm outside, a 1-14 UNS-2B thread and a square gasket 99.5 mm outside by 89.5 mm inside, packed 12 to a carton. Those four numbers are enough to check any can handed to you across a counter, and the gasket figures matter most: a can with the right thread and the wrong gasket lands on the housing face and weeps.
Two Numbers, One Machine
VH23390E0020 and VH23390E0050 both appear against SK200-8 in supplier listings, and they are not the same filter. The 0020 version is quoted against Donaldson P502466 and Fleetguard FF5688; this one is quoted against Sakura FC-55241 with Hino 23390-E0050 as the engine-side number. The difference between them is four characters in the middle of a twelve-character part number, which is precisely the kind of difference that survives a phone call intact and fails at the machine.
Our advice is the same as for every number on this site: read the number off the can you are removing, photograph it, and send that. If the can is unreadable, send the height, the outside diameter and the thread; those three settle it without a parts book.
Fitting Notes
Fill the new can with clean diesel before fitting on a common-rail engine and lubricate the gasket with fuel rather than grease. Hand-tighten — a quarter turn past contact is enough for a square gasket — then prime with the hand pump until resistance is felt before cranking. Cranking a dry J05E to pull fuel through is how a high-pressure pump gets scored, and no filter rating will save it afterwards.
If the old can comes off with metal filings on the gasket face, stop and look at the lift pump before fitting the new one. Debris on the sealing face means something upstream is failing, and the filter has been catching it for a while.
FAQ
Q: What size is the Kobelco VH23390E0050 fuel filter?
A: 210 mm high, 108 mm outside, 1-14 UNS-2B thread, square gasket 99.5 mm outside and 89.5 mm inside, on Sakura's FC-55241 data for the equivalent element. It is a spin-on can with no separate bowl.
Q: Is VH23390E0050 the same as VH23390E0020?
A: No. Both are spin-ons listed against the SK200-8, but 23390-E0020 is quoted against Donaldson P502466 and Fleetguard FF5688, while 23390-E0050 is quoted against Sakura FC-55241. Order by the number on the can.
Q: Which machines take VH23390E0050?
A: Sakura lists FC-55241 against the Kobelco SK200-8 with the Hino J05E, printing Hino 23390-E0050 and Kobelco VH23390E0050 as the OEM numbers. Any other fitment should be checked by serial rather than assumed.
Q: Is this a genuine Kobelco or Hino filter?
A: No — aftermarket, cross-referenced for fitment. Both names are trademarks of their owners. Ask your dealer for a genuine part by VH23390E0050 if your service contract requires one.