High-Performance Radiator for Caterpillar CAT 312D2, 313D2 Series Excavators - PN 433-1675, 385-7942
Ensure optimal engine temperature and peak performance for your heavy machinery with our premium replacement radiator, specifically designed for a range of Caterpillar excavators. Sourced by Guangxi Huayang Engineering Machinery Equipment Co., Ltd., a trusted name in construction equipment parts, this radiator is built to meet or exceed OEM specifications.

Product Specifications
Part Numbers: 433-1675, 385-7942
Compatible Caterpillar Models: CAT 312D2, CAT 312D2L, CAT 313D2LGP, CAT 313D2, CAT 312D2GC
Application: Engine Cooling System
Type: Heavy-Duty Replacement Radiator
Key Features & Advantages
✓ Superior Cooling Efficiency: Engineered with high-quality cores and fins to maximize heat dissipation, preventing engine overheating even under heavy loads and in demanding conditions. Crucial for maintaining the performance of your CAT 312D2 excavator.
✓ Robust Construction: Built with durable materials to withstand vibrations, pressure fluctuations, and the harsh environments typical of construction sites. This Caterpillar radiator offers longevity and reliability.
✓ Direct OEM Fitment: Designed as a direct replacement for part numbers 433-1675 and 385-7942, ensuring hassle-free installation on compatible CAT 313D2 and other listed models without modification.
✓ Cost-Effective Solution: Provides OEM-level performance at a competitive price point, reducing downtime and maintenance costs for your valuable heavy equipment.
Applications and Machine Use Cases
The Caterpillar 312D2, 312D2L, 313D2, 313D2LGP, and 312D2GC excavators are versatile machines used in a variety of demanding applications:
General Construction: Digging foundations, trenching, site preparation.
Road Building: Excavation, grading support, material handling.
Utility Work: Laying pipes and cables.
Landscaping & Demolition: Moving earth, clearing sites, light demolition tasks.
In these scenarios, the engine is often under continuous high load. A reliable excavator radiator like this one is absolutely critical to prevent costly engine damage and ensure project deadlines are met. An efficient cooling system maintains optimal operating temperatures, extending the life of the engine and associated components.
Your Trusted Partner: Guangxi Huayang Engineering Machinery Equipment Co., Ltd.
Located at www.guangxihuayang.com, Guangxi Huayang specializes in providing high-quality replacement parts for leading brands like Komatsu and Caterpillar. Our extensive inventory covers:
Undercarriage Components: Track rollers, carrier rollers, sprockets, idlers, track shoes ('Four Wheels and One Track').
Hydraulic Systems: Hydraulic pumps, motors, main control valves, hydraulic cylinders (bucket, boom, arm cylinders).
Transmission & Power Parts: Gearboxes, gear components, engine assemblies (including Cummins engine parts).
Wear Parts: Bucket teeth, track links, pins, bushings, high-strength bolts, and more.
We are committed to supplying durable and reliable parts, like this CAT 433-1675 radiator, to keep your construction machinery running efficiently.
Common Questions & Answers
Q1: How can I be sure this radiator (PN 433-1675 / 385-7942) is the correct fit for my Caterpillar excavator?
A: Please verify that your machine model is one of the listed compatible models (CAT 312D2, 312D2L, 313D2LGP, 313D2, 312D2GC). Cross-referencing the part number (433-1675 or 385-7942) with your machine's manual or existing part is the best way. If you are unsure, contact our support team at Guangxi Huayang with your machine's serial number.
Q2: What are the typical warning signs that my current excavator radiator needs replacement?
A: Key indicators include consistent engine overheating, visible coolant leaks from the radiator core or tanks, frequently low coolant levels (without external leaks), bent or clogged radiator fins impairing airflow, or significant corrosion.
Q3: Is replacing the radiator a complex job?
A: Replacing a radiator involves draining the cooling system, disconnecting hoses and mounting brackets, removing the old unit, and installing the new one, followed by refilling and bleeding the system. While manageable for experienced mechanics, we recommend professional installation to ensure it's done correctly and to prevent potential damage or leaks.
Troubleshooting & Repair Suggestions
Overheating Issues: Check coolant level first. Inspect fan belts and fan operation. Ensure radiator fins are clean and not blocked by debris. Check the thermostat. If issues persist, the radiator might have internal blockage or damage.
Coolant Leaks: Visually inspect the radiator core, tanks, seams, and hoses for signs of leakage (wet spots, dried coolant residue). Minor core leaks might be repairable by a specialist, but significant damage or tank leaks usually necessitate replacement.
Physical Damage: Bent fins can sometimes be carefully straightened, but cracked tanks or damaged core tubes often mean the radiator needs replacing.
Recommendation: For accurate diagnosis and safe repair, consult a qualified heavy machinery mechanic. Always use the correct type and mixture of coolant.
Maintenance & Care Tips
Regular Coolant Checks: Monitor coolant level in the reservoir and radiator (when cool). Top up as needed with the manufacturer-specified coolant mixture.
Keep it Clean: Regularly clean the exterior radiator fins using compressed air or low-pressure water to remove dirt, dust, and debris that can hinder airflow.
Inspect Hoses & Clamps: Periodically check radiator hoses for cracks, swelling, or softness. Ensure clamps are tight and secure.
Pressure Cap Test: Ensure the radiator cap maintains the correct pressure; a faulty cap can lead to boiling or coolant loss.
Scheduled Coolant Flush: Follow the manufacturer's recommended interval for flushing and replacing the coolant to prevent corrosion and buildup within the cooling system.
Related Komatsu & Caterpillar Parts Terminology
Expand your knowledge with terminology for other common parts available through Guangxi Huayang:
1. Komatsu PC200 Track Roller
Location: Undercarriage. Supports machine weight on the track chain.
中: 小松PC200支重轮
Рус: Опорный каток Komatsu PC200
2. Caterpillar D6T Sprocket Segment
Location: Undercarriage (Final Drive). Engages with track bushings to drive the machine.
中: 卡特彼勒D6T驱动齿块
Рус: Сегмент ведущего колеса Caterpillar D6T
3. Komatsu WA380 Hydraulic Pump
Location: Hydraulic System. Generates flow for hydraulic functions (e.g., lifting, steering).
中: 小松WA380液压泵
Рус: Гидравлический насос Komatsu WA380
4. Caterpillar 345D Boom Cylinder
Location: Hydraulic System (Work Equipment). Raises and lowers the excavator boom.
中: 卡特彼勒345D动臂油缸
Рус: Цилиндр стрелы Caterpillar 345D
5. Komatsu D85 Transmission Gear
Location: Powertrain (Transmission). Component within the gearbox responsible for speed/torque changes.
中: 小松D85变速箱齿轮
Рус: Шестерня трансмиссии Komatsu D85
6. Caterpillar C9 Engine Injector
Location: Engine Fuel System. Sprays fuel into the combustion chamber.
中: 卡特彼勒C9发动机喷油器
Рус: Форсунка двигателя Caterpillar C9
7. Komatsu PC300 Bucket Teeth
Location: Work Equipment (Bucket). Ground engaging tools for digging.
中: 小松PC300斗齿
Рус: Зуб ковша Komatsu PC300
8. Caterpillar 320D Track Link Assembly
Location: Undercarriage. The main chain assembly that the machine runs on.
中: 卡特彼勒320D链轨总成
Рус: Гусеничная цепь в сборе Caterpillar 320D
9. Komatsu GD655 Final Drive
Location: Powertrain/Undercarriage. Reduces speed and increases torque to the drive wheels/sprockets.
中: 小松GD655终传动
Рус: Бортовой редуктор Komatsu GD655
10. Caterpillar 966H Cutting Edge
Location: Work Equipment (Loader Bucket). Replaceable wear strip on the bottom lip of the bucket.
中: 卡特彼勒966H铲刀板
Рус: Режущая кромка Caterpillar 966H
For top-quality Caterpillar and Komatsu parts, trust Guangxi Huayang Engineering Machinery Equipment Co., Ltd. Visit us at www.guangxihuayang.com.