Komatsu S6D125-1FF Fuel System Parts Hub
Komatsu S6D125-1FF Fuel System Parts is a focused 19PARTS hub for buyers working inside a specific Komatsu engine model and repair system. It is meant to reduce guesswork by tying engine-model navigation to related product listings and part-number references.
Diagram callout lookup for Komatsu S6D125-1FF Fuel System Parts
Use each diagram together with the table directly below it. The Diagram Ref. column corresponds to the location number shown on that specific image. Clickable part numbers link to matching 19PARTS product pages where a product match exists.
S6D125-1FF — Fuel Nozzle And Spill Tube
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 0 | 6151-11-3101 | Nozzle Holder Ass'Y | 6 | SN: 24781-UP |
| 4 | DK150562-5000 | Spring,Nozzle | 1 | SN: 24781-UP |
| 5 | DK150530-4000 | Shim, 0.500Mm | - | SN: 24781-UP |
| 5 | DK150530-4100 | Shim, 0.525Mm | - | SN: 24781-UP |
| 5 | DK150530-4200 | Shim, 0.550Mm | - | SN: 24781-UP |
| 5 | DK150530-4300 | Shim, 0.575Mm | - | SN: 24781-UP |
| 5 | DK150530-4400 | Shim, 0.600Mm | - | SN: 24781-UP |
| 5 | DK150530-4500 | Shim, 0.625Mm | - | SN: 24781-UP |
| 5 | DK150530-4600 | Shim, 0.650Mm | - | SN: 24781-UP |
| 5 | DK150530-4700 | Shim, 0.675Mm | - | SN: 24781-UP |
| 5 | DK150530-4800 | Shim, 0.700Mm | - | SN: 24781-UP |
| 5 | DK150530-4900 | Shim, 0.725Mm | - | SN: 24781-UP |
| 5 | DK150530-5000 | Shim, 0.750Mm | - | SN: 24781-UP |
| 5 | DK150530-5100 | Shim, 0.775Mm | - | SN: 24781-UP |
| 5 | DK150530-5200 | Shim, 0.800Mm | - | SN: 24781-UP |
| 5 | DK150530-5300 | Shim, 0.825Mm | - | SN: 24781-UP |
| 5 | DK150530-5400 | Shim, 0.850Mm | - | SN: 24781-UP |
| 5 | DK150530-5600 | Shim, 0.900Mm | - | SN: 24781-UP |
| 5 | DK150530-5700 | Shim, 0.925Mm | - | SN: 24781-UP |
| 5 | DK150530-5800 | Shim, 0.950Mm | - | SN: 24781-UP |
| 5 | DK150530-5900 | Shim, 0.975Mm | - | SN: 24781-UP |
| 5 | DK150530-6000 | Shim, 1.000Mm | - | SN: 24781-UP |
| 5 | DK150530-6100 | Shim, 1.025Mm | - | SN: 24781-UP |
| 5 | DK150530-6200 | Shim, 1.050Mm | - | SN: 24781-UP |
| 5 | DK150530-6300 | Shim, 1.075Mm | - | SN: 24781-UP |
| 5 | DK150530-6400 | Shim, 1.100Mm | - | SN: 24781-UP |
| 5 | DK150530-6500 | Shim, 1.125Mm | - | SN: 24781-UP |
| 5 | DK150530-6600 | Shim, 1.150Mm | - | SN: 24781-UP |
| 5 | DK150530-6700 | Shim, 1.175Mm | - | SN: 24781-UP |
| 5 | DK150530-6800 | Shim, 1.200Mm | - | SN: 24781-UP |
| 5 | DK150530-6900 | Shim, 1.225Mm | - | SN: 24781-UP |
| 5 | DK150530-7000 | Shim, 1.250Mm | - | SN: 24781-UP |
| 5 | DK150530-7100 | Shim, 1.275Mm | - | SN: 24781-UP |
| 5 | DK150530-7200 | Shim, 1.300Mm | - | SN: 24781-UP |
| 5 | DK150530-7300 | Shim, 1.325Mm | - | SN: 24781-UP |
| 5 | DK150530-7400 | Shim, 1.350Mm | - | SN: 24781-UP |
| 5 | DK150530-7500 | Shim, 1.375Mm | - | SN: 24781-UP |
| 5 | DK150530-7600 | Shim, 1.400Mm | - | SN: 24781-UP |
| 5 | DK150530-7700 | Shim, 1.425Mm | - | SN: 24781-UP |
| 5 | DK150530-7800 | Shim, 1.450Mm | - | SN: 24781-UP |
| 5 | DK150530-7900 | Shim, 1.475Mm | - | SN: 24781-UP |
| 5 | DK150530-8000 | Shim, 1.500Mm | - | SN: 24781-UP |
| 8 | DK029300-5070 | Gasket | 1 | SN: 25601-UP |
| 8 | DK029300-5070 | Gasket (K1) | 1 | SN: 24781-25600 |
| 10 | 6127-11-3152 | Bolt,Joint | 1 | SN: 24781-UP |
| 11 | 07005-00812 | Gasket (K1) | 2 | SN: 24781-UP |
| 12 | 6151-11-3121 | Nozzle | 1 | SN: 24781-UP |
| 14 | 07000-65065 | O-Ring (K1) | 6 | SN: 24781-UP |
| 16 | 07005-01012 | Gasket (K1) | 12 | SN: 24781-UP |
S6D125-1FF — Fuel Injection Pump And Piping
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 3 | 04020-01024 | Pin,Dowel (See Fig.0201) | 2 | SN: 24781-UP |
| 4 | 01010-51075 | Bolt | 2 | SN: 24781-UP |
| 6 | 01643-31032 | Washer | 4 | SN: 24781-UP |
| 8 | 01641-21016 | Washer | 4 | SN: 24781-UP |
| 12 | 06030-06307 | Bearing,Ball | 1 | SN: 24781-UP |
| 13 | 04065-08025 | Ring,Snap | 1 | SN: 24781-UP |
| 14 | 06000-06006 | Bearing,Ball | 1 | SN: 24781-UP |
| 15 | 6151-71-3150 | Seal,Oil (K2) | 1 | SN: 24781-UP |
| 18 | 04010-00519 | Key | 1 | SN: 24781-UP |
| 21 | 07000-02125 | O-Ring (K2) | 1 | SN: 24781-UP |
| 23 | 01640-21016 | Washer | 4 | SN: 24781-UP |
| 24 | 6151-71-5110 | Tube,Injection, No.1 | 1 | SN: 24781-UP |
| 25 | 6151-71-5120 | Tube,Injection, No.2 | 1 | SN: 24781-UP |
| 26 | 6151-71-5130 | Tube,Injection, No.3 | 1 | SN: 24781-UP |
| 27 | 6151-71-5140 | Tube,Injection, No.4 | 1 | SN: 24781-UP |
| 28 | 6151-71-5150 | Tube,Injection, No.5 | 1 | SN: 24781-UP |
| 29 | 6151-71-5160 | Tube,Injection, No.6 | 1 | SN: 24781-UP |
| 35 | 01010-50630 | Bolt | 1 | SN: 24781-UP |
| 38 | 07206-30710 | Bolt,Joint | 1 | SN: 24781-UP |
| 39 | 07005-01012 | Gasket (K2) | 2 | SN: 24781-UP |
| 40 | 6151-71-5710 | Tube | 1 | SN: 24781-UP |
| 42 | 07005-01412 | Gasket (K2) | 2 | SN: 24781-UP |
| 47 | 07005-01412 | Gasket (K2) | 2 | SN: 24781-UP |
| 50 | 07285-00085 | Clip | 2 | SN: 24781-UP |
S6D125-1FF — Fuel Injection Pump (Pump)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 6 | DK134101-9820 | Plunger Ass'Y | 1 | SN: 24781-UP |
| 8 | DK134116-4720 | Holder,Delivery Valve | 1 | SN: 24781-UP |
| 9 | DK029632-2070 | O-Ring | 1 | SN: 24781-UP |
| 11 | DK134112-2000 | Spring | 1 | SN: 24781-UP |
| 12 | DK134115-0100 | Gasket | 1 | SN: 24781-UP |
| 13 | DK029302-0140 | Washer | 1 | SN: 24781-UP |
| 15 | DK029602-0010 | Ring,Snap | 1 | SN: 24781-UP |
| 16 | DK029632-9030 | O-Ring | 1 | SN: 24781-UP |
| 17 | DK029631-5020 | O-Ring | 1 | SN: 24781-UP |
| 18 | DK029631-5020 | O-Ring | 1 | SN: 24781-UP |
| 19 | DK139400-0900 | Shim, 0.500Mm | - | SN: 24781-UP |
| 19 | DK139400-1000 | Shim, 0.525Mm | - | SN: 24781-UP |
| 19 | DK139400-1100 | Shim, 0.550Mm | - | SN: 24781-UP |
| 19 | DK139400-2100 | Shim, 0.800Mm | - | SN: 24781-UP |
| 19 | DK139400-2900 | Shim, 1.000Mm | - | SN: 24781-UP |
| 26 | DK134241-0021 | Sleeve,Control | 6 | SN: 24781-UP |
| 27 | DK134216-0000 | Seat,Spring | 6 | SN: 24781-UP |
| 30 | DK134200-0020 | Tappet Ass'Y | 6 | SN: 24781-UP |
| 31 | DK016650-2230 | Bearing | 1 | SN: 24781-UP |
| 37 | DK016650-2230 | Bearing | 1 | SN: 24781-UP |
| 39 | DK139629-0000 | Seal,Oil | 1 | SN: 24781-UP |
| 41 | DK029635-5010 | O-Ring | 1 | SN: 24781-UP |
| 42 | DK134563-0900 | Sleeve | 1 | SN: 24781-UP |
| 47 | DK026524-2940 | Gasket | 1 | SN: 24781-UP |
S6D125-1FF — 2)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 20 | DK139611-0300 | Seal,Oil | 1 | SN: 38443-UP |
| 20 | The part specified in the line above can be used instead of this partDK139611-0000 | Seal,Oil | 1 | SN: 24781-38442 |
| 25 | DK154206-2800 | Collar | 1 | SN: 24781-UP |
| 27 | DK154237-1700 | Pin | 1 | SN: 24781-UP |
| 30 | DK154350-7800 | Gasket | 1 | SN: 24781-UP |
| 32 | DK026508-1140 | Gasket | 2 | SN: 24781-UP |
| 36 | DK029340-6120 | Gasket | 2 | SN: 24781-UP |
| 37 | DK026510-1340 | Gasket | 1 | SN: 24781-UP |
S6D125-1FF — Fuel Injection Pump (Coupling)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 3 | DK156615-2800 | Washer | 2 | SN: 24781-UP |
| 4 | DK156605-5320 | Plate | 1 | SN: 24781-UP |
| 5 | DK156617-2100 | Nut | 2 | SN: 24781-UP |
| 9 | DK156605-5420 | Plate | 1 | SN: 24781-UP |
| 11 | DK156615-1600 | Washer | 2 | SN: 24781-UP |
| 14 | DK023641-8410 | Washer,Spring | 1 | SN: 24781-UP |
S6D125-1FF — Water Separator And Mounting
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 0 | 600-311-9731 | Water Separator A. | 1 | SN: 24781-UP |
| 3 | 07005-00812 | Gasket | 1 | SN: 24781-UP |
| 7 | 600-311-9890 | O-Ring | 1 | SN: 24781-UP |
| 16 | 01640-21016 | Washer | 3 | SN: 24781-UP |
| 19 | 07005-01412 | Gasket (K2) | 4 | SN: 24781-UP |
| 20 | 08034-00519 | Band | 1 | SN: 24781-UP |
Shop the Komatsu S6D125-1FF Fuel System Parts collection
S6D125-1FF Fuel System Parts lookup notes
Use this hub when the repair has already been narrowed to fuel system parts. Confirm each part against the engine serial range, parts-book callout, quantity, and option notes before ordering.
Related parent hubs
Featured parts in this hub
- Komatsu Engine Bearing Ball 06000-06006 — SKU KOM-06000-06006 | Bearing Ball
- Komatsu Engine Bearing Needle 06120-01612 — SKU KOM-06120-01612 | Bearing Needle
- Komatsu Engine Gasket DK026510-1340 — SKU KOM-DK026510-1340 | Product code Dk026510-1440 | Gasket
- Komatsu Engine Gasket DK029340-6120 — SKU KOM-DK029340-6120 | Product code Dk029340-6120 | Gasket
- Komatsu Engine Nozzle 6151-11-3121 — SKU KOM-6151-11-3121 | Nozzle
- Komatsu Engine Nozzle Holder Ass'Y 6151-11-3101 — SKU KOM-6151-11-3101 | Nozzle Holder Ass'Y
- Komatsu Engine O-Ring Injection Drive Case 07000-02125 — SKU KOM-07000-02125 | O-Ring Injection Drive Case
- Komatsu Engine Pin DK154237-1700 — SKU KOM-DK154237-1700 | Product code Dk154237-1700 | Pin
- Komatsu Engine Plate DK156605-5320 — SKU KOM-DK156605-5320 | Product code Dk156605-5320 | Plate
- Komatsu Engine Plate DK156605-5420 — SKU KOM-DK156605-5420 | Product code Dk156605-5420 | Plate
- Komatsu Engine Plunger Ass'Y DK134101-9820 — SKU KOM-DK134101-9820 | Product code Dk134101-9820 | Plunger Ass'Y
- Komatsu Engine Seal Bearing 06122-01603 — SKU KOM-06122-01603 | Seal Bearing
- Komatsu Engine Seal Oil¤ Injection Drive Case 6151-71-3150 — SKU KOM-6151-71-3150 | Seal Oil¤ Injection Drive Case
- Komatsu Engine Sleeve Control DK134241-0021 — SKU KOM-DK134241-0021 | Product code Dk134241-0021 | Sleeve Control
- Komatsu Engine Spring Nozzle DK150562-5000 — SKU KOM-DK150562-5000 | Product code Dk150562-5000 | Spring Nozzle
- Komatsu Engine Tappet Ass'Y DK134200-0020 — SKU KOM-DK134200-0020 | Product code Dk134200-0020 | Tappet Ass'Y
- Komatsu Engine Washer 01640-21626 — SKU KOM-01640-21626 | Washer
- Komatsu Engine Washer DK156615-1600 — SKU KOM-DK156615-1600 | Product code Dk156615-1600 | Washer
Parts-book verification before ordering
Komatsu engine parts often change by engine arrangement, serial range, diagram callout, and option note. 19PARTS uses engine-model organization to help you move from a broad Komatsu part number search into a tighter reference path, but final fitment should always be confirmed against your engine serial number and parts book.
Our Keep Ops Moving approach is simple: give buyers cleaner lookup paths, clear part-number references, and practical cross-navigation so rebuild shops, fleet teams, mechanics, and equipment owners can identify the right components faster.