Package Size
45.00cm * 26.00cm * 15.00cm
The 3697436F Bypass Water Hose is a specialized OEM cooling system component engineered exclusively for diesel engines, covering a wide range of applications including heavy-duty on-highway vehicles (long-haul trucks, urban buses), off-highway machinery (construction excavators, mining loaders, agricultural tractors), and stationary industrial generators. As a critical part of the engine's coolant circulation system, its core function is to create a "bypass" pathway for engine coolant—directing a portion of the fluid around the radiator during cold starts or low-load operations, accelerating engine warm-up to reach optimal operating temperature (82-95°C) faster, and preventing overcooling that could reduce fuel efficiency or cause component wear.
Exceptional Cold-Start Performance: By diverting coolant away from the radiator during startup, it cuts engine warm-up time by 25-30%—reducing the period of "cold engine" operation where fuel combustion is less efficient and wear on piston rings, bearings, and gaskets is higher.
Superior Durability: The EPDM rubber inner tube resists coolant degradation and thermal aging, maintaining flexibility and integrity even after 5,000+ hours of exposure to temperatures ranging from -40°C to 130°C.
Structural Rigidity: The polyester braided reinforcement adds strength to withstand vibration (up to 2,000 Hz) from heavy-duty engine operation, preventing hose kinking or separation from fittings.
What is the typical lead time for orders?
Standard models generally ship within 15–30 days. For customized units or specialized parts, the lead time may range from 60 to 90 days depending on complexity.
Do you provide after-sales service and support?
Yes, we maintain a comprehensive after-sales system to ensure the stable operation of your equipment and address any technical issues promptly.
Can I request customized parts for my specific machinery?
Absolutely! We offer tailored attachments and customized parts to meet the unique requirements of your industrial machinery.
What documents are provided for international export?
We provide a full export documentation package, including Commercial Invoices, Packing Lists, Bills of Lading, and Certificates of Conformity (COC).
How can I confirm if a part fits my engine?
If you are unsure about compatibility, please contact our customer service team. We can help you identify the exact parts based on your engine model and serial number.
How long does shipping take after payment?
Once payment is confirmed, we typically require 3 business days for stocking. For rare or specialized parts, we will notify you via email if additional time is needed.
Marketo Auto
