CAT 1786633 (178-6633) Water Pump | Fits 320C 320D 312C 312D 323D Excavators
CAT 1786633 (178-6633) Water Pump | Fits 320C 320D 312C 312D 323D Excavators
In Stock & Ready for Global Express Dispatch
Request a Quick Quote✓ Premium Caterpillar Quality Spec | ✓ 100% Direct Fit | ✓ Fast Global Shipping
Premium engine water pump designed as a direct OEM-compatible replacement for Caterpillar (CAT) hydraulic excavators. Built to deliver efficient coolant circulation, maintain optimal operating temperatures, prevent thermal overload, and ensure long-term engine performance in demanding construction and earthmoving environments.
Product Highlights
- Part Number: 1786633 / 178-6633
- Direct Fit OEM Replacement: Form, fit, and mounting dimensions match original Caterpillar factory engineering specifications perfectly without requiring any modifications.
- Heavy-Duty Construction: Manufactured with precision-machined cast iron housing, corrosion-resistant internal impellers, and high-temperature heavy-duty seals for leak-free operational reliability.
- Optimized Thermal Management: Provides high volumetric coolant flow rates to regulate cylinder block temperature efficiently and protect engine components during continuous high-load digging and lifting operations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 1786633 / 178-6633 |
| Product Type | Engine Coolant Water Pump Assembly |
| Brand Compatibility | Caterpillar (CAT) |
| Application | Engine Cooling System |
| Material | High-Strength Cast Iron Housing & Precision Impeller |
| Warranty | 12 Months Warranty |
Compatible Models & Equipment
This premium engine water pump is precision-engineered to fit the following Caterpillar hydraulic excavators:
- 311 Series: 311C / 311D LRR
- 312 Series: 312C / 312C L / 312D / 312D L / 313D
- 314 Series: 314C / 314D CR / 314D LCR
- 315 & 318 Series: 315D L / 318C / 318D L
- 319 Series: 319C / 319D / 319D L / 319D LN
- 320C Series: 320C / 320C L / 320C FM
- 320D Series: 320D / 320D L / 320D GC / 320D LN / 320D FM / 320D FM RR / 320D RR / 320D LRR
- 321 Series: 321C / 321D LCR
- 323D Series: 323D / 323D L / 323D LN / 323D S / 323D SA
Key Applications
- Engine Cooling System: Delivers essential coolant circulation between the engine cylinder block, cylinder head, and radiator.
- Overheating Prevention: Protects high-value diesel engines against thermal stress, head gasket failures, and costly downtime caused by coolant circulation breakdown.
- Preventative Maintenance: Serves as a direct drop-in replacement during scheduled engine overhauls or routine cooling system maintenance.
Why Choose Our Aftermarket CAT Water Pumps?
- Guaranteed OEM Quality: Manufactured under strict ISO 9001 quality standards to match original Caterpillar factory dimensions and thermal performance.
- Cost-Effective Solution: Achieve premium dealer-level reliability and identical performance at a fraction of the OEM replacement price.
- Ready to Ship: Kept in stock for immediate worldwide dispatch to reduce your machine's idle downtime significantly.
- Industry-Leading Support: Backed by a full 1-year warranty and a team of professional heavy machinery technical experts.
Frequently Asked Questions (FAQ)
Q: Is this water pump a genuine Caterpillar part?
A: This is a premium-grade, OEM-compatible aftermarket replacement pump. It is engineered to exact CAT dimensional and technical standards, serving as a direct drop-in replacement for part number 178-6633 / 1786633.
Q: What is covered under the 12-month warranty?
A: Our 12-month warranty fully covers all manufacturing defects, material failures, and workmanship issues under standard operating conditions.
Q: Should I flush the cooling system when replacing the water pump?
A: Yes, we strongly recommend thoroughly flushing the cooling system and filling it with clean coolant to eliminate scale and sediment that could damage new pump shaft seals.
Q: How long does international shipping take?
A: In-stock orders are typically dispatched within 3–5 business days. We offer expedited shipping and global air freight options for emergency machine breakdown situations.
Need a Quote for CAT 1786633 (178-6633)?
Contact us today for the latest pricing, bulk discounts, and shipping availability.
Share
