Detroit Diesel 671TI 871 1271 Raw Water Pump – 3-1/2" Splined Impeller Drive
The Detroit Diesel DD 671TI-871-1271 raw water pump is a heavy-duty cooling system component designed to maintain optimal engine operating temperatures in demanding marine and industrial applications. Built for compatibility with Detroit Diesel 671TI, 871, and 1271 engine platforms, this pump ensures consistent seawater or coolant circulation through the engine heat exchanger system.
Engineered with a 3-1/2 inch splined impeller drive, this pump delivers reliable mechanical engagement and high-efficiency flow performance under continuous-duty operation. It is commonly used as a direct replacement or service upgrade for worn or failing original cooling pumps, helping prevent overheating and extending engine life.
Ideal for commercial marine vessels, workboats, and industrial diesel installations, this pump is designed for durability, corrosion resistance, and long service intervals in harsh operating environments.
Key Features
- Heavy-duty raw water circulation pump for Detroit Diesel engines
- 3-1/2" splined impeller drive for secure mechanical coupling
- Designed for continuous-duty marine and industrial operation
- Supports efficient engine cooling and heat exchanger performance
- Direct replacement compatibility for OEM-style pump systems
- Built for corrosion resistance in saltwater environments
Applications
- Marine propulsion systems (workboats, commercial vessels)
- Industrial diesel engine cooling systems
- Generator sets powered by Detroit Diesel 671TI, 871, 1271 engines
- Offshore and heavy-duty marine service equipment
- Engine room cooling circulation systems
Specifications
- Engine Compatibility: Detroit Diesel 671TI / 871 / 1271
- Drive Type: 3-1/2" splined impeller shaft
- Pump Type: Raw water / seawater circulation pump
- Port Size: Not specified (varies by installation and housing configuration – verify before installation)
- Construction: Heavy-duty marine-grade materials (typical OEM equivalent design)
- Function: Engine cooling system circulation
FAQs
Q1: What engines does this pump fit?
A: It is designed for Detroit Diesel 671TI, 871, and 1271 engine platforms.
Q2: Is this a raw water or freshwater pump?
A: This is a raw water (seawater) circulation pump used in engine cooling systems.
Q3: What type of drive does the pump use?
A: It uses a 3-1/2 inch splined impeller drive for mechanical engagement.
Q4: Can this pump replace OEM units?
A: Yes, it is commonly used as a direct replacement for OEM-style Detroit Diesel cooling pumps.
Q5: What is the main function of this pump?
A: It circulates seawater or coolant through the engine to regulate operating temperature.
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