Description

Komatsu PC800-8K Parts Catalog – Stop Guessing, Start Ordering the Right Part

I’ve seen more aftermarket parts catalogs than I care to admit—the kind where a gasket for the fuel filter housing shows up with the wrong bolt pattern, or the hydraulic seal number doesn’t match anything in real life. You waste time, you waste money, and the machine sits. That’s why for the Komatsu PC800-8K, you want the real document, not a copy of a copy. This Komatsu PC800-8K Parts Catalog is the original OEM file—719 pages of verified part numbers, exploded views, and factory revision codes. If you’re ordering components for the SAA6D140E-5F-KU engine or the cooling/fuel/electrical systems, this is the only source you should trust.

Engine and Cooling: Two Critical Sections

The catalog starts with B0 ENGINE RELATED PARTS, which breaks down the engine mount, oil filter lines (hose and filter), air cleaner sensor, exhaust pipe, and the power take-off assembly with its coupling, oil check gauge, and lubrication lines. Every sub-system is listed with a specific page number—engine mounting starts at page 001001, exhaust pipe at 001005. If you need the coupling assembly for the PTO, you flip to 001006 and see the exact part number, quantity, and reference code. Across the aisle, C0 COOLING SYSTEM covers the radiator, oil cooler, after cooler, condenser for the A/C, oil cooler for fuel, shrouds, fan mount and motor, fan motor piping, oil cooler piping, sensor and cover (the 75A alternator version), sub tank, and after cooler hose. That’s eleven distinct cooling sub-sections, each with its own page block starting at 002001. You don’t guess whether the fan motor matches—you read the diagram and order the correct Komatsu part.

Why Should You Use the OEM Parts Catalog?

Aftermarket parts databases are built on guesses. They pull from old listings, mis-copied part numbers, and sometimes straight-up fiction. This catalog is factory-issued, meaning every number in it was stamped on a genuine Komatsu part at some point. The PC800-8K is a heavy excavator—the wrong hydraulic hose can blow a line and cost you shift time. The wrong fuel filter thread can leave you stranded. The OEM catalog eliminates that. You get the same reference information the dealer’s parts counter uses. Need to match an oil cooler for fuel? Page 002002. Need the sub tank assembly? Page 002010. No ambiguity.

D0 Fuel Tank and Related Parts – Not Just a Tank

The fuel system section (D0 FUEL TANK AND RELATED PARTS) is three pages but covers the fuel tank itself, the fuel line brackets and clips (page 003002), and the fuel line filter and hose (page 003003). Simple, but critical. I’ve seen techs order a tank only to find the retaining bracket doesn’t match because they used a generic catalog. With this OEM Parts Catalog, you see the bracket and clip assembly as a single reference line, complete with quantity per machine. Same for the fuel filter and hose—one page, correct part numbers, done.

Electrical System Coverage

E0 ELECTRICAL SYSTEM is another major chapter. The catalog doesn’t reprint wiring diagrams (that’s the service manual’s job), but it gives you every electrical component part number—alternators, starters, sensors, harness clips, connectors. The Cooling (Sensor and Cover) sub-section specifically mentions the 75A alternator variant, so if your PC800-8K came with that alternator, you’re covered. A wrong alternator bracket will cost you an hour of fabrication. The OEM listing prevents that.

719 Pages of Verified Part Numbers

This isn’t a reprint. This is the original factory PDF, 719 pages thick, scanned from the master document. The table of contents lists 16 major sections from B0 (Engine) through Y0 (Service Kit and Component Parts). Sections include hydraulic system (H0), main frame (J0), operator’s compartment (K0), guard (M0), swing circle (N0), travel and lower piping (P0), undercarriage (R0), work equipment (T0), marks and plates (U0), accessory (V0), miscellaneous (W0), and service kit (Y0). Every part you could need for a full rebuild or service is in here. If you’re serious about working on a PC800-8K, you keep this open on your bench.

I’ve used these catalogs for years. When I was a junior tech, I wasted a week ordering a steering column part from a third-party list—wrong part, twice. Once I switched to OEM parts catalogs, my hit rate went to near 100%. This Komatsu catalog is the same principle. You want the factory number, you get the factory number. For a related hydraulic component list, check the FAI Komatsu 67-80DT Parts Catalog – OEM Hydraulic Steering Piston List”>FAI Komatsu 67-80DT Parts Catalog – OEM Hydraulic Steering Piston List. If you need parts for smaller Komatsu models, the Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM”>Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM covers those. For a compact excavator, see the Komatsu PC14R Parts Catalog – Order Correct Parts Fast”>Komatsu PC14R Parts Catalog – Order Correct Parts Fast. All are genuine OEM files, not reprints.

For background on the engine platform—the SAA6D140E-5F-KU—you can read this Wikipedia article on diesel engines”>this Wikipedia article on diesel engines or more specifically this Wikipedia article on diesel engines. But for actual part numbers, stick with the factory document.

Does this catalog include torque specifications or repair procedures?

No. This is a parts catalog, not a service manual. It lists part numbers, quantities, and exploded views. Torque specs and repair steps come from the factory service manual.

Can I use this to order parts for a PC800-8K with serial number K50001-UP?

Yes.

How does this OEM catalog differ from aftermarket parts lists?

Aftermarket lists are often compiled from multiple sources, sometimes with errors in supersession or cross-referencing. This catalog is a direct product of Komatsu’s engineering group. Every part number was originally assigned by Komatsu, and the catalog shows exactly which assemblies use which parts. For example, the engine mounting section lists separate pages for oil filter lines (hose vs. filter), so you don’t order a filter bracket when you need a hose. The aftermarket blur combines them. That’s a real difference that saves you returns and downtime.

Is this a digital access or a printed book?

Digital access. PDF format, 719 pages, fully searchable. You get the file immediately after purchase.

You need this catalog if you touch a PC800-8K. It’s the difference between ordering the right part today and waiting for a return tomorrow. Stop relying on internet forums and third-party lists. Access the Factory Manual and keep it on your laptop, tablet, or printed out. The part numbers are solid, the layout is logical, and every reference is factory-correct. Get it now.