6BTA5.9-C180 DCEC Cummins Diesel Engine 180HP

6BTA5.9-C180 DCEC Cummins Diesel Engine for Construction Machinery

The 6BTA5.9-C180 is a construction-rated diesel engine produced by Dongfeng Cummins Engine Company (DCEC), the 50/50 joint venture between Dongfeng Motor and Cummins USA established in 1986. Built on the B-series platform and manufactured under Cummins technical standards, it is one of the widely used 6B-series engines for heavy equipment applications across China and export markets.

With 132 kW / 180 HP output, 5.9 L inline-6 displacement, turbocharged water-air intercooling, mechanical fuel injection and CPL 8541, the 6BTA5.9-C180 is suitable for construction machinery applications such as excavators, wheel loaders, motor graders, bulldozers, road rollers, cranes, concrete mixers, drilling machines and engine power packs.

Stock is held on-site. Orders are fulfilled with ESN and engine nameplate verification before shipment to help confirm correct CPL, configuration number and replacement compatibility.

Key Engine Information

• Engine model: 6BTA5.9-C180
• Rated output: 132 kW / 180 HP at 2500 RPM
• Displacement: 5.9 L inline 6-cylinder
• Aspiration: Turbocharged, water-air intercooled
• Fuel system: Weifu AD pump with RSV mechanical governor
• CPL code: 8541

Model Designation and Engine Design

The engine designation explains the main configuration: 6B denotes the 6-cylinder B-series platform, T indicates turbocharging, A indicates aftercooling with water-air intercooler, C designates construction-rated duty cycle, and 180 refers to the rated horsepower output.

The 6BTA5.9-C180 uses a Weifu AD pump with RSV mechanical governor and 8% regulation, offering predictable throttle response and straightforward serviceability in remote field conditions. The water-air intercooler system reduces intake air temperature, supporting stable combustion and controlled fuel consumption across the operating range.

The B-series engine architecture uses a parts consolidation design with fewer total components than comparable engines in its displacement class, helping reduce failure probability and lifecycle maintenance cost.

Technical Specifications

CPL, Compression Ratio and Rated Speed Confirmation

Why do compression ratio figures differ across sources?

The 6BTA5.9-C180 exists in two documented compression ratio configurations: 16.8:1 and 17.3:1. This is not a data error. It reflects CPL-level variation within the same model designation. The two configurations use different piston crown geometry and cylinder liner specifications, so overhaul kits, piston kits and liner sets are not interchangeable between them.

The correct compression ratio for your unit is confirmed by the CPL code on the engine dataplate, not by the model number alone. CPL 8541 is the primary reference for this page. If your dataplate shows a different CPL, contact us before ordering overhaul components.

Why do rated speed figures differ across sources?

Primary source documentation for CPL 8541 specifies 2500 RPM. Some third-party supplier pages list 2450 RPM, which corresponds to the QSB5.9-C180 electronic control variant. The two engines share displacement and power output but use different fuel systems and rated speeds. If your dataplate shows 2450 RPM, you are likely looking at a QSB unit.

Series Comparison and Selection Guide

The 6BTA5.9-C180 sits within the DCEC B-Series construction engine lineup. Buyers commonly compare it with 6BT5.9-C150, 6BTA5.9-C205 and QSB5.9-C180 when selecting a replacement engine or confirming a new equipment build.

C150 and C205 torque figures are pending source confirmation. Contact us for the current datasheet before making a final selection.

6BTA5.9-C180 vs QSB5.9-C180: which one do you need?

This is a common source of ordering confusion in this displacement class. Both this engine and the QSB5.9-C180 produce 132 kW / 180 HP from the same 5.9 L block, but they are different in fuel system architecture, diagnostics, wiring and parts compatibility.

• If your equipment was originally fitted with a mechanical injection engine and you need like-for-like replacement, choose 6BTA5.9-C180.
• If your destination market requires Euro II compliance or the equipment OEM specifies electronic control, QSB5.9-C180 may be required.
• If your site has no ECM diagnostic capability and needs a field-serviceable fuel system, 6BTA5.9-C180 is usually easier to maintain.
• If you are building new equipment for export to Southeast Asia or Europe with emission requirements, confirm the target standard before selecting the engine.

If you are unsure which variant your existing engine is, the fastest confirmation method is the engine nameplate.

Replacement Compatibility

The 6BTA5.9-C180 is a direct mechanical replacement for earlier 6BT5.9-C series engines in the same power class, subject to verification of CPL, configuration number, fuel system, mounting, flywheel housing and installation layout.

How to read your engine nameplate and why it matters

The engine nameplate is mounted on the side of the cylinder block. It contains three fields that control parts selection and replacement decisions:

• ESN: The Engine Serial Number is the unique factory identifier for your unit. It is used for warranty tracing, factory configuration lookup and build record retrieval via Cummins QuickServe Online.
• CPL Code: The most important field for parts ordering. CPL determines fuel system specification, compression ratio, turbocharger model and overhaul kit compatibility.
• Configuration Number: Controls installation-specific details such as PTO configuration, accessory drive bracket positions, exhaust outlet orientation and mounting footprint.

Photograph your nameplate with all three fields clearly visible and send it with your inquiry. We confirm CPL match and configuration compatibility before any order is placed. No commitment is required until fitment is confirmed.

Fitment checklist before ordering a replacement engine

• SAE flywheel housing size: B-series engines use SAE 3 or SAE 4; verify against your equipment bell housing.
• PTO and accessory drive positions: confirm against your existing Configuration Number.
• Exhaust outlet orientation: side-exit and top-exit layouts vary by OEM specification.
• Engine mounting footprint: bolt pattern and bracket positions must match the original installation.
• Fuel system type: confirm mechanical vs. electronic before ordering.
• Compression ratio: confirm CPL before ordering any overhaul components.

Units within the same CPL group and Configuration Number are generally direct replacements. Cross-CPL substitutions, even within the same model designation, require component-level verification. Do not order based on model number alone.

Parts and Service Support

Common Cummins engine parts for the 6BTA5.9-C180 are stocked and available for separate order. Parts ordering follows the same CPL-first principle as engine replacement. Model number alone is not sufficient for overhaul components.

High-value parts categories

• Overhaul kits: In-frame, top-end and complete kits are available. Specify CPL code and compression ratio, 16.8:1 or 17.3:1, when ordering because kits are not interchangeable between compression ratio variants.
• Cylinder head assembly: Standard and Rotocoil configurations are available. Specify CPL. Head gasket sets are available separately.
• Fuel system: Weifu AD pump assembly, RSV governor and injector sets are available. Mechanical fuel system parts from the 6BTA are not compatible with the QSB5.9-C180 electronic system.
• Turbocharger: Turbocharger model varies by CPL. Do not substitute without CPL confirmation.
• Filters: Oil, fuel and air filter 3-in-1 service kits are available for standard service intervals.
• Cooling system: Water pump assembly, thermostat and coolant hoses are available.
• Electrical parts: 6.6 kW starter motor, 12V / 24V, and alternator are available.

Parts ordering process

1. Identify your CPL code from the engine nameplate.
2. Provide CPL code and ESN with your parts inquiry.
3. We confirm part number and cross-reference against your configuration before invoicing.

Genuine DCEC/Cummins parts and verified OEM-equivalent alternatives are both available. We will confirm which applies to your specific SKU. If your nameplate CPL does not match 8541, we can still source parts, but additional lead time may apply for non-standard CPL configurations.

Procurement and Logistics

• Lead time: 15–30 working days for engine orders; parts orders vary by SKU availability.
• MOQ: 1 unit for engine orders; no minimum on parts.
• Inspection: ESN and engine nameplate photograph are verified against CPL records before shipment confirmation.
• Export documentation: Commercial invoice, packing list, bill of lading and certificate of origin are available; Form E for ASEAN is available on request.
• Payment terms: T/T and L/C accepted.
• Packaging: Export-standard wooden crate; engine drained and sealed for ocean freight.
• Shipping: FOB Shenzhen / FOB Shanghai standard; CIF and CNF available on request.

Freight forwarder coordination and pre-shipment inspection arrangement are available for buyers requiring third-party inspection before departure.

Warranty and After-Sales Support

Standard warranty coverage follows DCEC factory terms for genuine engines. The following process applies:

1. Submit ESN, purchase date and failure description with photographic documentation.
2. Our technical team assesses the failure mode, with remote field diagnosis support available.
3. Warranty determination is issued within 3 business days after complete documentation is received.
4. Approved claims are handled by replacement parts dispatch or engine exchange, depending on failure scope.
5. Transit damage claims must be documented at delivery and reported within 48 hours of receipt.

After-sales technical support is available for installation guidance, commissioning troubleshooting and fault code interpretation. Remote support is provided via email and video call.

Wholesale and Distribution

We supply the 6BTA5.9-C180 at direct wholesale pricing to equipment OEMs, trading companies and project procurement teams. Volume pricing is available for multi-unit orders, with pricing adjusted by order size and delivery schedule.

For resellers, we support downstream customers with technical documentation, engine nameplates and parts availability confirmation. Supply continuity agreements are available for buyers requiring scheduled delivery across project timelines.

For OEM buyers specifying the 6BTA5.9-C180 for a new equipment build, we can provide certified drawings, torque curve data FR91343 and CPL-level configuration confirmation to support engineering sign-off. Authorized distributor arrangements are considered on a case-by-case basis for qualified buyers.

FAQ

What is the difference between the 6BTA5.9-C180 and the QSB5.9-C180?

The 6BTA5.9-C180 uses a Weifu AD mechanical fuel pump with RSV governor, while the QSB5.9-C180 uses full-authority electronic control. Both produce 132 kW / 180 HP, but fuel system parts, ECM and wiring harnesses are not interchangeable.

How do I confirm which compression ratio my engine has?

Check the CPL code on your engine nameplate and cross-reference via Cummins QuickServe Online, or contact us with your ESN. Documented variants are 16.8:1 and 17.3:1, and the correct value determines overhaul kit selection.

Can I use 6BTA5.9-C180 overhaul parts on a 6BT5.9-C150 or C205?

Not without verification. Pistons, liners and rings vary by power variant and compression ratio. Always specify your CPL code and ESN when ordering overhaul components.

What is the maximum operating altitude for this engine?

The rated continuous operating altitude is 2000 m. Operation above this altitude requires derating calculations. Contact us for application-specific guidance.

What cold-start capability does this engine have?

The engine is rated for cold start down to -12°C without auxiliary starting aids. The 6.6 kW starter motor and intake air preheater support reliable cold-weather operation.

How do I place a replacement engine order and confirm fitment?

Provide your existing engine ESN and a photograph of the engine nameplate. We verify CPL, configuration number and dimensional compatibility before confirming the order.

What export documents are included with shipment?

Standard documents include commercial invoice, packing list, bill of lading and certificate of origin. Form E for ASEAN preferential tariff and other origin certificates are available on request.

Contact and Inquiry

To request a quote for the 6BTA5.9-C180, please include the following information so we can confirm pricing and fitment accurately:

• Engine ESN if replacing an existing unit
• Engine nameplate photograph with CPL code visible
• Required quantity
• Destination port
• Required delivery window

We respond to all technical and commercial inquiries within 1 business day.

Contact us!