Komatsu PC200-8 Main Fuel Filter 600-319-3750

The Number That Replaced 600-311-3750

If your build sheet or an older dealer printout says 600-311-3750, it is the same element. Komatsu's current parts page carries the number as 600-319-3750, and the aftermarket catalogues we checked list the two numbers together with identical published dimensions and the same 7/8-14 UNF-2B thread. Both are stocked; we ship whichever number you order against, and we note the supersession on the invoice so your service record stays consistent.

What you should not do is accept a "-8 fits everything" listing in a marketplace. On a common-rail PC200-8 the stage-2 element sits between the fuel rail's feed pump and a set of injectors that cost more than a year of filters, and a filter that threads on but does not seal, filter or drain correctly lets water straight through to them.

The Thread and the Height Settle the Fitment

Two Komatsu numbers get confused on this machine, and they cannot interchange: the difference is in the base, not in the badge. 600-319-3750 is published at 174-176 mm tall on a 7/8-14 UNF-2B thread. The other number, 600-311-8321, is a genuine Komatsu main fuel filter that Komatsu's own page publishes at 145 mm high; aftermarket catalogues measure it at about 147 mm with a 1-14 UNS thread and list it for the six-cylinder -6 and -7 generation machines (PC300-7 and PC360-7 class, WA430-5, PC450-6K, GD655-3A). Different thread, 30 mm difference in height — it will not go onto a -8 filter head, and forcing it on is how people end up with a fuel leak or an unfiltered rail.

So the check we ask every buyer to run takes ten seconds: measure your old element end to end and look at the thread on the base. Roughly 175 mm with a 7/8-14 thread — you need 600-319-3750. Roughly 145 mm with a 1-14 thread — you need the older six-cylinder element. Send us the two figures plus the machine serial and the guesswork is gone.

What It Protects: The Common-Rail Injectors

Komatsu's own injector failure guide, the document dealers use when a machine comes in with a fuel-system fault, lists the fuel main filter, the feed pump and the injector part numbers side by side for each model. For the PC200-8M0 that list is 600-319-3750, feed pump 6754-71-1012, injectors 6754-11-3011. For the PC220-8 it is the same filter and pump with 6754-11-3102 injectors; the PC300-8 carries 600-319-3750 with 6745-71-1170 and 6745-11-3102. The filter is on that list because it is the part that decides whether the other two survive.

There is a published case study of a PC200-8 that would not start: the fuel system was stripped and the fault traced to injector internal leakage from contaminated fuel, with the fuel filter and fuel quality named as the cause of the contamination route. That is the failure mode this element prevents — a filter that is clogged, bypassing or simply the wrong element lets fine dirt and water through, the high-pressure pump and injector plungers score, and the machine goes from a 20-dollar filter to four injectors and a pump.

Service Interval and What We Ship

Komatsu's published -8 generation schedule — the one printed in the quick reference guide for the same two-element fuel system — puts the pre-fuel filter cartridge at 500 hours and the main fuel filter at 1,000 hours. Field reality: in quarry, demolition or high-water-area work our customers halve both numbers, and if the water-in-fuel lamp has come on even once the stage-1 element is changed immediately, not at the next interval. The stage-1 element for the -8 is a separate part number, 600-319-3610, and we stock it as well as this one.

We supply the element with the correct sealing ring, packed for export, in volumes from a single service kit to a container-load order for a fleet. Cross numbers (Fleetguard FF5488, Donaldson P550774, WIX 33697) are useful for identifying what you have been buying, but we quote and ship on the Komatsu number so there is no argument at the parts counter or in the workshop.

FAQ

Q: What is the Komatsu PC200-8 main fuel filter part number?
A: Komatsu's consumables list puts 600-319-3750 as the main (stage-2) fuel filter for the PC200-8 and the machines that share its SAA6D107E engine — PC200-8M0, PC210-10M0, PC220-8 and PC300-8, plus the WA200-6, WA250-6 and WA430-6 loaders. Komatsu's own parts page names it Main Fuel Filter and shows it as a cartridge element; the earlier number 600-311-3750 was built in the same size and the two are sold as interchangeable.

Q: What are the size and thread of the 600-319-3750 element?
A: Across the four aftermarket catalogues we checked, the element is published at 174-176 mm overall height and 93-94 mm outside diameter on a 7/8-14 UNF-2B thread. Those three figures are what we match against your old element; if yours measures roughly 145 mm tall on a 1-14 UNS thread it is the 600-311-8321 element, not this one.

Q: Which filter brands cross-reference the Komatsu 600-319-3750?
A: Fleetguard FF5488 (listed by three catalogues), Donaldson P550774 and WIX 33697 (two catalogues each) all cross to 600-319-3750. Baldwin and MANN numbers appear in single catalogues only and disagree between suppliers, so we quote and ship on the Komatsu number and use cross numbers as a starting point — confirm the thread and height before you fit anything.

Q: How often should the PC200-8 main fuel filter be changed?
A: Komatsu's published -8 series maintenance schedule, as it appears in the WA200-8 quick reference guide for the same fuel-filter pair, lists the pre-fuel filter cartridge at 500 hours and the main fuel filter at 1,000 hours. Machines working in dust, at altitude or on high-water fuel go to half that; the filter is cheap next to a set of common-rail injectors.