Model family · Cummins 6CTA8.3
Cummins 6CTA8.3 — the C8.3 family
The C family (6CT/C8.3), listed from the 6CTA8.3-C205-II at 151 kW to the C260-II at 194 kW — and present in the marine category as well.
The C8.3 family's listed table runs from the 6CTA8.3-C205-II at 151 kW to the C260-II at 194 kW, on bore and stroke of 114 × 135 mm, at speeds of 1,850–2,200 rpm, with a listed weight of 637 kg for the family table. It is a machine-rating table: the figures belong to the 1,850–2,200 rpm working range, which is the first thing to understand before comparing it with genset families quoted at 1,500 rpm.
The C family also appears on the marine side: a 6CTA8.3 marine model is listed in the marine category. That listing is recorded on the marine page; its own per-model table sits on the catalogue's marine page, so marine enquiries for this engine should state the marine application and confirm the marine variant's listed figures rather than borrowing the machine table below.
Listed range at a glance
| Model / line | Details on record |
|---|---|
| 6CTA8.3-C205-II | 151 kW · family table at 1,850–2,200 rpm |
| 6CTA8.3-C260-II | 194 kW · top of the listed C8.3 range |
| Family dimensions | Bore × stroke 114 × 135 mm · listed weight 637 kg |
| QSC8.3 (sibling) | 160–194 kW · C215-30 160 kW to C260-31 194 kW at 2,200–2,400 rpm |
| Marine listing | 6CTA8.3 marine model listed in the marine category (confirm its own table) |
Using the C8.3 table correctly
Because the C8.3 figures are quoted at working speeds of 1,850–2,200 rpm, they describe machine and industrial drive ratings. If your project is a genset, do not read a C8.3 machine rating as a genset rating: state the duty and frequency in the enquiry and have the appropriate variant and rating basis confirmed. If your project is a machine replacement, the table works directly — match the variant code (C205-II, C260-II) to your plate, note the 637 kg listed weight for handling and mounting checks, and confirm the full row for your variant in the quote.
The sibling QSC8.3 family covers a similar band (160–194 kW) at higher listed speeds (2,200–2,400 rpm). The two families are not interchangeable rows in one table; if your plate says QSC, enquire as QSC, and vice versa.
How buyers spec this line
- C8.3 figures are machine ratings at 1,850–2,200 rpm — not genset ratings.
- Match the variant code exactly (C205-II vs C260-II).
- A 6CTA8.3 marine listing exists; confirm the marine variant's own figures.
- Listed family weight 637 kg — useful for mounting and handling checks.
Terms on record
Listed terms on record: complete engines and power units carry a delivery window of 15–30 days and a warranty of 1 year or 1,200 hours, whichever comes first, as published in the supplier's FAQ. Confirm the exact rating, scope of supply and delivery window for your model before you order.
Buyer questions
Can the 6CTA8.3 drive a generator?
The listed table is a machine-rating table. For genset duty, state frequency and duty in the enquiry and have the genset-appropriate variant and rating confirmed.
What is the difference between 6CT and QSC8.3?
They are sibling families with different listed tables and speed ranges (QSC8.3 at 2,200–2,400 rpm). Enquire under the family name on your engine plate.
Is there a marine 6CTA8.3?
A marine model listing is on record in the marine category. Confirm its own listed specification in the enquiry.
Related lines
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