367-1817 CONNECTION AS for CAT C6.6 3512B C4.4 C7.1 Engine Water Connector

Genuine 367-1817 Connection AS for CAT C6.6, 3512B, C4.4, and C7.1 Engines

Engine cooling system integrity is critical for preventing overheating and maintaining performance in your Caterpillar® equipment. The 367-1817 CONNECTION AS for CAT C6.6 3512B C4.4 C7.1 ENGINE is the genuine OEM water connector assembly designed to provide a reliable sealed connection between cooling system components. This complete assembly, also referenced as part number 3671817, includes an integrated water temperature regulator to ensure proper coolant flow and temperature control. Each unit comes with seals and plug included, making it a ready-to-install solution for your engine’s cooling system .

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Precision Engineering for CAT Engine Families

This CAT water connector assembly is engineered as a direct replacement for multiple Caterpillar diesel engine platforms, ensuring consistent cooling system performance across a wide range of equipment :

For CAT C4.4 Engine Applications:

• Compact wheel loaders and backhoe loaders

• Small to mid-size excavators

• Industrial power units and generator sets

For CAT C6.6 Engine Applications:

• Mid-size excavators (313D, 314D, 315D, 318D series)

• Wheel loaders (924H, 924K, 928H, 930K)

• Telehandlers and material handlers

For CAT C7.1 Engine Applications:

• Excavators (320D, 320D2, 323D, 326D, 330D series)

• Wheel loaders (938M, 950M, 962M)

• Motor graders (140M, 160M series)

For CAT 3512B Engine Applications:

• Large mining and industrial engines

• Marine propulsion and generator set applications

Additional Compatible Equipment :

• Wheeled Excavators: M313D, M315D, M315D2, M317D2, M320, M320D2

• Compactors: CS11, CS54B, CS64B, CS68B, CS74B, CP54B, CP56B, CS56B, CW-34, CW-16, CS78B, CS79B, CS12

• Vibratory Soil Compactors: CS-54B, CS64B

• Excavators: 320, 320D2 GC, 320 GC, 320D L, 323, 323D2 L, 323GC, 326, 326GC, 326D2, 329D2, 330, 330D2, 330 GC, 333, 333 GC, 336 GC, 313D2 GC, 313D2, 318D2, 318D2 L

• Wheel Loaders: 928HZ, 924HZ

• Asphalt Pavers: AP-600D, AP655F, AP655F L

Critical Verification: Cooling system components must match your engine’s exact configuration. Always verify your engine model, serial number, and existing connection assembly configuration before ordering.

Complete Assembly Includes Temperature Regulation

This water connector with temperature regulator incorporates the thermostat housing and regulating components that control coolant flow through the engine. The water temperature regulator contains jiggle pins that vent air from the cooling system during coolant filling . These pins allow trapped air to escape, preventing air locks that could lead to overheating and engine damage .

Assembly Includes :

• Complete connection assembly housing

• Water temperature regulator (thermostat)

• Sealing components and gaskets

• Protective plug

Specifications :

• Total Length: 203.2 mm (approximately 8 inches)

• Total Width: 101.6 mm (approximately 4 inches)

• Total Height: 25 mm (approximately 1 inch)

Why Choose This Genuine CAT Connection Assembly?

1. OEM Quality for Reliable Cooling: This genuine CAT connection assembly is precisely engineered to maintain proper coolant flow and temperature control. The integrated temperature regulator ensures the engine reaches operating temperature quickly and maintains it under varying loads .

2. Prevents Overheating and Air Locks: The jiggle pins in the temperature regulator vent air during coolant filling, preventing dangerous air locks that can cause localized overheating and engine damage . If these pins seize, proper coolant filling becomes impossible .

3. Complete Ready-to-Install Unit: Unlike sourcing separate components, this assembly includes everything needed for installation—housing, regulator, seals, and plug . This ensures all components work together as designed.

4. Protects Your Engine Investment: The cooling system is critical for engine longevity. A properly functioning water temperature regulator maintains optimal operating temperature, reducing wear, improving fuel efficiency, and preventing thermal stress on engine components .

Technical Details & Function

• Genuine Part Numbers: 367-1817 / 3671817

• Component Type: Connection AS (Water Connector Assembly with Temperature Regulator)

• Function: Provides sealed water connection between cooling system components while housing the temperature regulator that controls coolant flow to the radiator

• Operating Principle: When closed, coolant bypasses the radiator for fast warm-up; when open, coolant flows through the radiator for cooling

• Application: A critical cooling system component for CAT C4.4, C6.6, C7.1, and 3512B diesel engines

Symptoms of a Failing Water Temperature Regulator

Replace your assembly with 367-1817 if you observe any of these warning signs :

• Engine Overheating: Temperature gauge readings above normal operating range

• Slow Warm-Up: Engine takes excessively long to reach operating temperature

• Low Coolant Temperature: Coolant temperature remains below 70°C (158°F) after 30 minutes of operation, indicating the regulator may be stuck open

• Coolant Loss: Unexplained coolant loss without visible external leaks

• Air Lock Symptoms: Inability to fill cooling system completely, requiring frequent bleeding

Order Your CAT Engine Water Connection Assembly Today

Ensure your engine’s cooling system operates as designed. Our genuine 367-1817 connection assembly for CAT C6.6, 3512B, C4.4, and C7.1 engines is in stock and ready for immediate shipment.

Click to order the CAT 367-1817 CONNECTION AS. Contact our technical team with your engine serial number for guaranteed compatibility confirmation.