Description
Product Overview
The HTD C9 Engine Assembly 398-4287 is a high-performance replacement power solution designed for Caterpillar excavators and bulldozers. Developed for heavy-duty construction machinery, this engine assembly provides strong power output, reliable operation, and long service life for demanding working conditions.
With compatible part numbers including 398-4287, 420-1870, 420-1871, and 387-8581, this C9 engine solution is suitable for machinery repair, engine replacement, and equipment rebuilding projects.
The C9 engine is widely used in heavy equipment applications where continuous power, durability, and stable performance are required. HTD provides professional replacement engine solutions with mechanical testing reports and factory inspection videos available before shipment, helping customers verify product quality and compatibility.
Key Features & Benefits
Heavy-Duty Power Performance
The C9 engine is designed for demanding construction machinery applications, delivering strong torque and stable power output during long working cycles.
Multiple Part Number Compatibility
Compatible with several Caterpillar engine reference numbers, providing a practical replacement option for different repair and maintenance requirements.
Compatible Part Numbers:
- 398-4287 / 3984287
- 420-1870 / 4201870
- 420-1871 / 4201871
- 387-8581 / 3878581
Reliable Operation
Built for heavy equipment environments, the engine provides consistent performance in construction, earthmoving, and agricultural machinery applications.
Professional Testing Support
HTD can provide mechanical test reports and factory inspection videos before shipment to ensure customers receive reliable engine assemblies.
Flexible Ordering & Export Service
With MOQ starting from 1 piece, HTD supports repair workshops, machinery dealers, and international distributors.
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | C9 Engine Assembly |
| Engine Model | C9 |
| Main Part Number | 398-4287 / 3984287 |
| Compatible Part Numbers | 420-1870, 420-1871, 387-8581 |
| Compatible Brand | Caterpillar |
| Application | Excavator / Bulldozer / Agricultural Machinery |
| Machine Type | Construction Equipment |
| Brand | HTD |
| Origin | Guangdong, China |
| Country of Manufacture | China |
| Engine Type | Diesel Engine Assembly |
| MOQ | 1 Piece |
| Warranty | 3–6 Months (According to product details) |
| Mechanical Test Report | Available |
| Factory Inspection Video | Available |
| Packaging | Wooden Case / Customized Packaging |
| Delivery Time | 7–10 Days |
| Payment Methods | T/T, Western Union, PayPal, Alipay, Trade Assurance |
| Shipping | International Export Service |
Applications
The HTD C9 Engine Assembly is suitable for:
- Caterpillar excavator engine replacement
- Caterpillar bulldozer power system repair
- Heavy construction machinery maintenance
- Earthmoving equipment rebuilding
- Mining machinery applications
- Agricultural machinery equipment
- Equipment rental fleet maintenance
- Machinery repair workshops
Quality Inspection
Before delivery, HTD provides professional inspection support to help customers confirm engine reliability.
Inspection services include:
- Engine appearance inspection
- Mechanical performance testing
- Operating condition verification
- Component inspection
- Factory inspection video
- Test report support
Strict inspection helps reduce installation risks and ensures stable operation after replacement.
Inventory & Supply Capability
HTD provides flexible supply solutions for global machinery customers.
Supply advantages:
- MOQ: 1 piece
- Support for individual replacement orders
- Suitable for wholesale distributors
- Professional export packaging
- Fast response to urgent repair requirements
- Stable supply of popular Caterpillar engine models
For customers requiring multiple units or long-term cooperation, HTD can provide customized supply solutions.
FAQ
Q1: Which machines can use the C9 engine assembly?
The C9 engine assembly is mainly used for Caterpillar construction machinery applications, including excavators and bulldozers. Customers should confirm engine specifications before ordering.
Q2: Are the listed part numbers compatible with this engine?
Yes. This product supports the following reference numbers:
398-4287, 3984287, 420-1870, 4201870, 420-1871, 4201871, 387-8581, 3878581.
Q3: Can you provide inspection documents before shipment?
Yes. HTD can provide mechanical test reports and factory inspection videos according to customer requirements.
Q4: What is the MOQ?
The minimum order quantity is 1 piece.
Q5: How fast can you ship the engine?
If stock is available, shipment can normally be arranged within 24 hours after payment confirmation. If not available, HTD will inform customers in advance. Normal delivery time is approximately 3–7 working days.













