Built on the Delco Remy 50MT platform, this 24V 9kW heavy-duty starter motor is designed for Caterpillar and Cummins diesel engines used in mining and construction equipment. As a direct OEM replacement for 10478911 and 10479339, it delivers reliable starting performance under heavy-load and harsh operating conditions, making it a dependable choice for distributors, fleet operators, and equipment service providers.
Elecdurauto
IATF 16949, ISO 9001, and other major OEM certification systems
OEM label and ODM customization accepted
50
7–15 Days
18 months
| Quantity: | |
|---|---|
Product Description
| Equipment Type | Equipment Model / Application | Brand |
|---|---|---|
| Trucks | 825C, 772, 834B, 768B, 768C, 769B, 769C, 772B, 773, 773B, 776B, 777B | Caterpillar |
| Loaders & Excavators | 988, 988B, 992, 992B, 992C, 345CLRE Hydraulic Excavator, 345DL Hydraulic Excavator, 349D2L Hydraulic Excavator, 349D2 Hydraulic Excavator, 966H, 972H | Caterpillar |
| Crawler Tractors / Track Tractors | D9L (1980–1986), D8L (1982–1992), D10 (1978–1986), D10N (1986–1993), D9N (1986–1995), D11N (1986–1993), D08 | Caterpillar |
| Motor Graders | 16M3, 14M, 245 | Caterpillar |
| Wheel Tractors | 627K, 621K, 623K | Caterpillar |
| Pipe Layers | 589 (1983–1992), 591 (1983–1992), 583K (1983–1989), 594H (1981–1985) | Caterpillar |
| Articulated Trucks | 657B, 660B, 631D, 633D, 641B, 730CEJ | Caterpillar |
| Engines | 3512 (1986–1993), 3516 (1986–1993), 3508 (1986–1993), C11 ACERT, C13 ACERT, D343 | Caterpillar |
| Road Recovery Vehicle | RM300 | Caterpillar |
| Cummins Engines | K Series Engines, QSK-78 Engine | Cummins |
| Mining Trucks | Komatsu Mining Truck | Komatsu |
| Parameter | Specification |
|---|---|
| Starter Model | 50MT Heavy-Duty Starter Motor |
| Product Type | Heavy-Duty Starter Motor – OE Replacement |
| Voltage | 24V |
| Power Output | 9 kW |
| Teeth | 11 |
| Rotation | TIME (Clockwise Equivalent) |
| Mount Type | Standard Heavy-Duty Mounting Configuration |
| Starter System | Direct Drive, High-Torque Design |
| Condition | Brand New, OE-Interchangeable |
| OEM Reference – Delco Remy | 10478911 / 10479339 / DR10478911 / DR10479339 |
| OEM Reference – Cummins | 3000576 / 3004699 / 3004700 / 3010125 / 3021038 / 3603868RX / 3632271 |
| OEM Reference – Original / CAT | 3383454 / 3T8947 / 3T8955 / 3T8967 / 4M5615 / 4N3349 / 4N3350 / 5L5343 / 5L8205 / 6N9667 / 6N9677 / 6T0647 / 6V0890 / 6V0927 / 8L8205 / 9L6474 |
| Application Category | Mining Trucks, Crawler Tractors, Hydraulic Excavators, Wheel Loaders, Construction Equipment |
| Compatible Equipment Brand | Caterpillar, Cummins, Komatsu |
| Housing Material | Heavy-Duty Metal Housing (Industrial Grade) |
| Electrical System | 24V Diesel Engine Starting System |
| Quality Test Standard | IATF 16949 & ISO 9001 Certified Production System |
| Warranty | 18 Months for Heavy-Duty Commercial Use |
| OEM Brand | OEM Reference Number | Description |
|---|---|---|
| Delco Remy | 10478911 | Heavy-duty starter motor compatible with Caterpillar, Cummins, and industrial diesel engines |
| Delco Remy | 10479339 | Direct replacement for 50MT 24V heavy-duty starter motor applications |
| Delco Remy | DR10478911 | OEM-equivalent starter motor for mining, construction, and heavy equipment |
| Delco Remy | DR10479339 | OE-interchangeable 50MT starter motor for Caterpillar and Cummins engines |
| Cummins | 3000576 | Compatible with K Series engines and QSK-78 engine applications |
| Cummins | 3004699 | Heavy-duty starter replacement for Cummins diesel engines |
| Cummins | 3004700 | OEM-equivalent starter for industrial and mining equipment |
| Cummins | 3010125 | Direct replacement for Cummins heavy-duty 24V starter applications |
| Cummins | 3021038 | Compatible starter motor for K Series and QSK-78 engines |
| Cummins | 3603868RX | OE-interchangeable starter for Cummins heavy-duty diesel engines |
| Cummins | 3632271 | Heavy-duty starter replacement for Cummins industrial applications |
| Original / CAT | 3383454 | OEM replacement starter motor for Caterpillar heavy-duty equipment |
| Original / CAT | 3T8947 | Direct-fit 50MT starter motor for CAT diesel engines |
| Original / CAT | 3T8955 | OE-interchangeable starter for Caterpillar mining and construction equipment |
| Original / CAT | 3T8967 | Heavy-duty starter motor for CAT 24V diesel applications |
| Original / CAT | 4M5615 | Caterpillar-compatible heavy-duty starter motor replacement |
| Original / CAT | 4N3349 | OEM-equivalent starter for Caterpillar engines |
| Original / CAT | 4N3350 | Direct replacement 24V starter for CAT heavy equipment |
| Original / CAT | 5L5343 | 50MT starter motor compatible with Caterpillar and Cummins engines |
| Original / CAT | 5L8205 | OE-interchangeable heavy-duty starter for mining and construction equipment |
| Original / CAT | 6N9667 | Direct-fit starter motor for 24V Caterpillar applications |
| Original / CAT | 6N9677 | Heavy-duty replacement starter for CAT diesel engines |
| Original / CAT | 6T0647 | OEM starter motor for Caterpillar mining and construction machines |
| Original / CAT | 6V0890 | 50MT heavy-duty starter compatible with CAT and Cummins engines |
| Original / CAT | 6V0927 | Direct replacement starter for Caterpillar industrial applications |
| Original / CAT | 8L8205 | Heavy-duty 24V starter for Caterpillar and Cummins equipment |
| Original / CAT | 9L6474 | OE-interchangeable starter motor for mining and construction equipment |
At Elecdurauto, the components of each product are strictly inspected to ensure the quality of the products.
New series of products have to undertake all kinds of tests before out into SOP, such as DV performance test,environment test, electromagnetic vibration test, endurance treat.
Electromagnetic Vibration Tester (On Working Condition)
Starter DV Performance Tester
Starter Endurance Test Zone
Environment Test Area
At Elecdurauto, every starter is manufactured to exacting standards through our fully integrated production process. From rigorously inspected raw materials to precision machining and automated assembly, each step is optimized for consistency and performance. Every unit undergoes dynamic testing to ensure unmatched reliability—meeting the demands of both OEM specifications and aftermarket requirements.
Starter Raw Materials Preparation
Starter Component Processing
Starter Parts Fabrication
Starter Parts Assembly Process
Starter Automated Production Line
Starter Quality Control Check
Starter Final Product Assembly
Starter Finished Goods Storage
With extensive experience in supplying to OEMs and large distributors, Elecdurauto understands what global compliance truly means. Our starter motors can be tailored to meet the required certifications and regulatory standards in your region — whether it's CE for Europe, E-Mark for automotive electronics, INMETRO for Brazil, or GCC conformity for the Middle East.
ISO/IATF 16949 Certified Production
ISO 14001 Environmental & Safety Compliance
Optional CE, RoHS, E-Mark, REACH, INMETRO & others
Lab testing partnerships for electromagnetic compatibility (EMC), durability, noise & vibration, and more
Customized labeling and documentation to meet your import/export requirements
Need help passing a new certification for your country?
Want to brand your own line with compliance guarantees?
We've done it before — and we're ready to do it for you.
At Elecdurauto, we take pride in delivering more than just starters—we provide end-to-end solutions tailored to our clients' exact needs. As a trusted OEM supplier for starters, we've built long-term partnerships by combining precision engineering, responsive service, and value-added support.
From initial design collaboration to final delivery, we ensure every starter meets strict OEM specifications while optimizing for performance and durability. Our team works closely with clients to refine packaging, streamline logistics, and even assist with product development—ensuring a seamless integration into their production lines.
Starter Motor Samples
Designed Boxes with Client Logo
Client Showcasing
OEM Starter Models Showroom
Detailed Shot of Starter Motor
Precision Components Inside Starter
Surface Texture and Labeling on Starter
Starter Motor Units Before Packaging
Elecdurauto brings together a powerful network of China's top automotive electrical component manufacturers to serve global buyers with unmatched efficiency.
As your strategic sourcing partner, we offer:
Competitive factory pricing
Product quality on par with international brands
Full support across fuel and new energy vehicle segments
From OE-compatible starter motors to custom-developed units, Elecdurauto empowers wholesalers, distributors, and OEM customers with reliable supply chain access and flexible production capability.
National-level high-tech enterprise focused on motor system innovation
¥300M+ R&D investment spanning ICE, BEV, HEV, REEV platforms
Modern production centers certified to GMW Global & CINA standards
Full-process automation with real-time quality control, smart warehousing, and digital visualization
Industry-leading single-line output capacity
Built upon Six Sigma and lean production principles
Smart upgrade from traditional to digitalized manufacturing
Capable of complex processes: round wire stators, high-density alternators, IPX4/IP67 protection-grade starters
Full IATF 16949, ISO 14001 compliance
In-house testing: performance, NVH, life-cycle (except EMC)
Certified by top OEMs: GMW, Chery, JAC, Foton, Caterpillar
Lifecycle validation: 45,000 to 350,000 cycles for start-stop systems
Starter motor digital assembly line: 2 million units/year
Rotor production: 3 million units/year
Flat wire stators/rotors: 250,000 units/year
Round wire motors: 240,000 units/year
Starter assembly total capacity: 600,000 units/year
This starter motor is compatible with a wide range of Caterpillar heavy-duty equipment, including D9L, D10N, D11N crawler tractors, 988 and 992 loaders, 345DL and 349D2 hydraulic excavators, as well as Cummins K Series and QSK-78 engines, and Komatsu mining trucks. Ideal for mining, construction, and industrial applications.
Yes, the 50MT starter motor is a direct OE replacement for Delco Remy 10478911, 10479339, DR10478911, and DR10479339, as well as multiple CAT original numbers, ensuring full interchangeability and performance compliance.
It operates at 24V with 9 kW power output, features 11 teeth, and a TIME turning sense. Uses a direct drive high-torque system, supports heavy-duty mounting, and is constructed with industrial-grade metal housing, meeting IATF 16949 and ISO 9001 quality standards.
Yes, it is engineered for extreme operating conditions, including low temperatures, heavy vibration, and high-load starts. Its robust design and high torque output make it ideal for European and South American mining and construction markets.
We provide an 18-month warranty for heavy-duty commercial use, covering manufacturing defects and ensuring peace of mind for fleet operators and distributors.
You can cross-check your engine or equipment against the OEM references provided (Delco Remy, Cummins, CAT original numbers). The starter motor is OE-interchangeable, allowing direct replacement without modifications.
Absolutely. The 50MT starter motor is designed for mining trucks, heavy-duty trucks, hydraulic excavators, wheel loaders, and crawler tractors, making it a versatile solution for industrial fleets and maintenance workshops.
It is manufactured under IATF 16949 and ISO 9001 certified production systems, ensuring high reliability, consistent performance, and compliance with international heavy-duty equipment standards.
Compared to standard starters, the 50MT model delivers higher starting torque, longer lifespan, and stable operation under continuous heavy loads, making it suitable for fleet operators, distributors, and service providers who require long-term reliability.
Yes, it is widely available for B2B procurement globally, especially in Europe and South America, with full OEM cross-reference support and packaging suitable for bulk orders, industrial warehouses, and fleet maintenance providers.
