Marine Engine
Cummins 6CTA8.3 Marine Diesel Engine (188–235 hp)
Cummins 6CTA8.3 6-cylinder diesel engine, 188–235 hp (138–175 kW), 5 ratings for marine work. Each unit nameplate-verified.
Specifications
- Engine Model
- 6CTA8.3-M188 ~ GM175
- Cylinders & Configuration
- Inline 6, 4-cycle
- Rated Power Range
- 138–175 kW (188–235 hp) @ 1500–2328 rpm
- Aspiration
- water cooled turbocharged
- Applications
- Marine
- Documentation
- Nameplate verification + load-test record per serial number
Overview
The Cummins 6CTA8.3 is a 6-cylinder Cummins diesel engine supplied in 5 factory ratings from 188 hp (138 kW) to 235 hp (175 kW). Every rating listed on this page is a complete engine for marine duty, not a generator set, and each unit ships with its serial number recorded against the specification sheet that applies to it.
Ratings in this family differ in rated speed, peak torque and emissions tier rather than in displacement or cylinder count, so the choice between them is a duty-matching question. The specifications panel and the per-rating entries on this page are generated from the same source data, so a rating quoted here can be matched directly against a delivery document.
Specifications
The specifications panel lists the family-level values that are common to every 6CTA8.3 rating. Ratings that share displacement and cylinder count but differ in output are listed individually in the model selection section.
Model Selection: 6CTA8.3 Ratings
Each entry in this section is one rating of the Cummins 6CTA8.3. The rated power is the output at the stated speed; the peak torque figure is the value the rating develops at the lower speed shown, which is what normally decides whether a rating suits a given machine. Each rating carries a stable anchor, so a single rating can be linked or quoted directly.
6CTA8.3-M188
6CTA8.3-M188 — rated 138 kW (188 hp) at 2328 rpm; peak torque 152 N·m at 2400 rpm.
6CTA8.3-M205
6CTA8.3-M205 — rated 151 kW (205 hp) at 2328 rpm; peak torque 166 N·m at 2400 rpm.
6CTA8.3-GM155(IMO)
6CTA8.3-GM155(IMO) — rated 155 kW (208 hp) at 1500 rpm; peak torque 170 N·m at 1500 rpm.
6CTA8.3-M220
6CTA8.3-M220 — rated 164 kW (220 hp) at 1800 rpm; peak torque 180 N·m at 1885 rpm.
6CTA8.3-GM175
6CTA8.3-GM175 — rated 175 kW (235 hp) at 1800 rpm; peak torque 193 N·m at 1800 rpm.
Applications
6CTA8.3 engines in this family are normally specified for marine work.
Marine: ratings are quoted against the propulsion or auxiliary duty required, with the gearbox ratio and the duty classification taken into account.
Verification, Documentation and Ordering
Each engine is offered with nameplate verification + load-test record per serial number. That means the model and rating printed on the engine nameplate can be checked against the record issued for that serial number before shipment, which is the point most buyers of re-rated or re-exported engines want covered.
To receive a quotation, send the exact rating from the matrix above (for example 6CTA8.3-GM175), the machine or application it will drive, the quantity, and the destination port. If the rating you need is not listed, send the model and the required output and we will confirm whether it belongs to this family or to a neighbouring one.
Buyer tip: Send your 6CTA8.3 specification, quantity and destination port for a verified quotation and lead time.
Frequently Asked Questions
What is the power range of the 6CTA8.3?
The 5 ratings listed on this page run from 188 hp (138 kW) to 235 hp (175 kW), at governed speeds between 1500 and 2328 rpm.
What is the difference between 6CTA8.3-M220 and 6CTA8.3-GM175?
6CTA8.3-M220 is rated 164 kW (220 hp) at 1800 rpm with peak torque of 180 N·m, while 6CTA8.3-GM175 is rated 175 kW (235 hp) at 1800 rpm with 193 N·m. They use the same base engine; the higher rating is the one to specify when the driven load needs the extra torque at the lower speed.
How is a 6CTA8.3 rating ordered?
Send the exact rating shown in the model selection table, the application it will drive, the quantity and the destination port. The engine is then quoted against that rating and confirmed against its nameplate and load-test record.
