3126 · HEUI hydraulic electronic unit injector
183-0560 Diesel Fuel Injector — CAT 3126B (HEUI)

New (reproduction) · Supplied by BOSTEN · MOQ 1 pc (factory pack: 6 pcs)
A HEUI injector for the 3126 / 3126B / 3126E engine family, common in mid-size excavators and trucks. Buyers often ask for 3126 and C7 parts in the same message — the systems are related but the injectors are not interchangeable. The 3126 uses HEUI and should never be selected from a common-rail listing.
Fitment is listed, not guaranteed. Applications are compiled from catalog and cross-reference data. Fitment is confirmed by our team against the old part number and engine serial before quotation — not an automated lookup.
Specifications
Identity, fitment and packing
| Part number | 183-0560 |
|---|---|
| Condition | New (reproduction) |
| Fuel system | HEUI hydraulic electronic unit injector |
| Cross-reference | 178-0199 222-5966 173-9380 178-6342 10R0781 10R9239 10R0782 10R1267 |
| Unit weight | 1.32 kg |
| Packing | 6 pcs / box · 11.4 kg · 350 × 280 × 400 mm |
| MOQ | 1 pc (factory pack: 6 pcs) |
| Warranty | Warranty terms are confirmed per order and stated on the quotation. |
Fitment — listed applications
- CAT 3126 / 3126B / 3126E (HEUI) — confirm by old unit number
The 3126 family spans dozens of reference numbers across configurations — the stamped number on the old unit is the only reliable selector.

Before dispatch
Checked, photographed, packed
Units are inspected on named test equipment before packing. Photos of your actual goods are taken before shipment, and a test report for the ordered batch is available on request.
Quality & testingProduct FAQ
Questions buyers ask about 183-0560
Is 183-0560 new, remanufactured or used?
183-0560 is supplied new, as an independent aftermarket reproduction built to the fitment and function of the part it replaces. It is not a used or reconditioned unit, and it is not an OEM part.
How do I confirm 183-0560 fits my engine?
Fitment is listed, not guaranteed. Listed applications: CAT 3126 / 3126B / 3126E (HEUI) — confirm by old unit number. Send the number stamped on your old unit, the engine model and serial, and — where the stamping is worn — a photo of the old part. We check it against the catalog manually and confirm in the quotation. The machine or engine model alone does not select the part.
What is the minimum order quantity for 183-0560?
The listed minimum order is 1 pc (factory pack: 6 pcs). Factory packing is 6 pc per box, 11.4 kg. If you need a different quantity for a trial or a mixed order, ask — what we can actually ship is confirmed in the quotation, not on this page.
Is 183-0560 an OEM Caterpillar part?
183-0560 is an independent aftermarket replacement part, manufactured for BOSTEN and sold under our own brand. It is not a Caterpillar OEM part, and BOSTEN is not an authorized Caterpillar distributor or dealer. Caterpillar names and part numbers appear on this page for identification and cross-reference only.
Can you check my old part number against 183-0560?
The main references we list for this part are 178-0199 / 222-5966 / 173-9380 / 178-6342 / 10R0781 / 10R9239. A shared number in a cross-reference list is identification, not a guarantee of interchange, so we check the number on your old unit against the catalog before quoting.
What warranty applies to 183-0560?
Warranty terms are confirmed per order and written on the quotation before payment. Different product lines and conditions carry different periods, so the terms for this part are not printed here as a generic number. Damage from contaminated oil or fuel and incorrect installation are excluded under the terms confirmed for your order.
Which fuel system does 183-0560 belong to?
Fuel system: HEUI hydraulic electronic unit injector. Injectors from a different fuel system do not interchange with 183-0560, even where the engine family name looks similar. The engine plate plus the number on your old injector is what tells us which system your engine actually runs.
Terms behind these answers: warranty & shipping · testing & packing. Fitment questions go to our technical team.
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