Komatsu PC200-8 Engine Oil Filter 6736-51-5142

Why This Element Matters on a 6D107 Engine

The 6D107 is the engine in the machine most of our Komatsu enquiries are about, and it is a common-rail unit. Common-rail injectors work at pressures that leave no tolerance for abrasive contamination: unlike the older mechanical engines, a marginal oil filter does not simply shorten engine life, it puts the fuel system at risk as well. That is the practical argument for ordering this element by number and by grade rather than by price alone.

On the parts side, 6736-51-5142 is straightforward once the number is confirmed. Komatsu lists it at 94 mm diameter and 176 mm height, and the aftermarket follows that envelope. The complication is the number's history and its cross lists. The earlier 6736-51-5141 is quoted as superseded by the current number, so an invoice from a few years ago may carry a different number for the same position. Cross lists are unusually broad as well: Fleetguard LF16006, Baldwin B7181, Donaldson P550909 and the Daewoo/Doosan number 65055105015 all appear alongside it, and the same lists reach from PC200-8 machines through to other brands. A cross number is useful for a quote and nothing more — the element in your hand decides the fit.

One point we prefer to flag rather than paper over: sources disagree on the housing type. Komatsu's catalogue classifies 6736-51-5142 as a cartridge element; aftermarket catalogues for the same number describe a spin-on canister with a 1 1/8-16 thread and quote the same 94 × 176 mm. Both cannot be right as written, and a photo of the old element settles it in seconds — which is why every product page on this site asks for one before we ship on a number we have not fitted to your machine before.

This element sits in the middle of a service set worth ordering together: the PC200 fuel filter and the PC200-8 air filter 600-185-4100 for the intake side, the hydraulic oil filter 207-60-71181, the return filter 20Y-60-41130 and the suction strainer for the hydraulic side. The Komatsu PC200-8 filter guide lists the whole set with numbers, and the cross-reference guide explains how to verify any of them against a different brand's number.

FAQ

Q: What is Komatsu 6736-51-5142?
A: 6736-51-5142 is the engine oil filter for Komatsu 6D107-family engines — the SAA4D107E and SAA6D107E units fitted to PC200-8, PC200LC-8, PC220-8, PC210-10, WA200-6, D39EX-22 and D61EX-23 machines. Komatsu's own parts catalogue quotes it at 94 mm diameter and 176 mm height. The earlier number 6736-51-5141 is listed by aftermarket suppliers as replaced by 6736-51-5142.

Q: What are the cross references for 6736-51-5142?
A: Aftermarket cross lists carry Fleetguard LF16006, Baldwin B7181, Donaldson P550909 and the Daewoo/Doosan number 65055105015. Treat these as leads: cross lists for this number are unusually broad and include other machine brands, so confirm the element against the one you remove — 94 mm diameter, 176 mm height — before ordering.

Q: Is 6736-51-5142 a spin-on or a cartridge element?
A: Sources disagree, and we say so rather than guess. Komatsu's own parts catalogue classifies the number as a cartridge element, while aftermarket catalogues for the same number describe a spin-on canister with a 1 1/8-16 thread. Both quote the same 94 × 176 mm envelope. Send us a photo of the element you removed — housing type is obvious in a photograph and settles it in seconds.

Q: Should I replace the oil filter with every oil change?
A: Follow the service schedule in the Operation and Maintenance Manual for your machine and serial number — Komatsu publishes different intervals for standard and severe-duty operation, and mining or quarry work generally falls in the severe category. What we can say as a parts supplier is that a common-rail 6D107 engine is sensitive to oil condition, and a filter that has gone into bypass is not filtering at all. Change the element with the oil; do not carry one over.