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International 3700 Engine Oil Hoses

International 3700 Engine oil hoses

Engine oil hoses for your International 3700 start at low prices, with multiple options in stock from top OE-quality brands. These hoses route pressurized oil between the engine block, oil cooler, and filter housing. When one cracks or swells, oil pressure drops and leaks develop quickly — leading to accelerated engine wear or catastrophic failure if ignored.

Signs your International 3700 needs a new engine oil hose

  • Visible oil puddle or wet spots on the ground beneath the engine bay after parking
  • Oil warning light or low oil pressure gauge reading on the dashboard
  • Burning oil smell while driving, caused by oil dripping onto hot exhaust components
  • Soft, spongy, or visibly cracked rubber along the hose body when inspected by hand
  • Oil residue or wet film coating nearby engine components, brackets, or the firewall
  • Engine overheating when an oil cooler hose fails and oil can no longer transfer heat effectively

Which engine oil hose should you buy for your International 3700?

The right oil hose depends on its location in the system — oil cooler lines, filter housing connections, and turbo oil feed or return lines each carry different pressures and temperatures. Match the hose to the specific position it fills on your International 3700, and choose a construction grade that suits how the vehicle is used.

OE-Equivalent Rubber Hose
Best for
Daily drivers needing a like-for-like replacement
What you get
Matches original fitment, pressure rating, and bend geometry; straightforward swap with no modification
Reinforced Braided Rubber Hose
Best for
Higher-mileage or higher-heat applications
What you get
Textile or wire braid over rubber core resists swelling and burst better than standard rubber under sustained pressure
Oil Cooler Line Assembly
Best for
Vehicles with a dedicated engine oil cooler
What you get
Pre-formed hard-line and hose combination with fittings already attached; eliminates the need to source ends separately
Silicone Oil Hose
Best for
Performance builds or turbocharged engines with elevated oil temps
What you get
Withstands higher continuous temperatures than rubber, resists hardening over time, but must be rated for oil rather than coolant use

Replacing engine oil hoses on a International 3700

Moderate⏱ 1–2 hoursDrain pan and shop ragsHose clamp pliers or flathead screwdriverSet of combination wrenches or flare-nut wrenches for threaded fittingsFlashlight or inspection lightGloves and eye protection

Drain or contain any oil that will spill when the hose is removed, then loosen the clamps or threaded fittings at both ends and work the hose free — stubborn hoses may need a pick tool to break the seal without damaging the fitting. Route the new hose the same way as the original, seat it fully onto any barbed fittings, and torque threaded connections to snug without over-tightening. After reinstalling, top off the oil, run the engine to operating temperature, and inspect all connection points for seepage before returning the vehicle to service.

Frequently asked questions

How much does it cost to replace engine oil hoses on a International 3700?
Parts alone start at low prices for a International 3700 engine oil hose. A straightforward rubber hose on an accessible location is a low-cost DIY job. Labor at a shop typically adds one to two hours of shop rate. Oil cooler line assemblies or turbo feed lines on tightly packaged engines will cost more in both parts and time.
How long do engine oil hoses last on a International 3700?
Most rubber engine oil hoses last somewhere between 60,000 and 100,000 miles, but heat cycles, oil contamination, and ozone exposure accelerate aging. Turbocharged engines run hotter and tend to wear oil hoses faster. Inspect hoses during every oil change for surface cracking, soft spots, or seepage at the fittings.
Can I drive my International 3700 with a leaking engine oil hose?
No. Even a slow oil hose leak will deplete oil level over a short distance, dropping oil pressure below safe operating range. Running an engine with low pressure causes metal-on-metal contact in bearings and journals. If you see an oil pressure warning or a fresh leak, stop driving and inspect the hoses before continuing.
Are engine oil hoses and coolant hoses interchangeable on a International 3700?
No — they are not interchangeable. Oil hoses are formulated to resist petroleum-based fluids and sustained oil temperatures, while coolant hoses are engineered for water and glycol. Using a coolant hose in an oil circuit causes the inner lining to swell, delaminate, and fail quickly, potentially sending debris into the oiling system.
How do I know which engine oil hose position I need for my International 3700?
Identify the leak or failure point first — common positions include the oil cooler inlet and outlet, the oil filter adapter, and the turbo oil feed or drain line. Cross-reference the hose location with your International 3700 parts diagram or use the year, make, and model lookup on AutoBuffy to filter results to the correct position and fitment.
Should I replace all engine oil hoses at once on my International 3700?
If hoses are original and one has failed, replacing all of them at the same service is worth considering. Hoses that share the same age and heat exposure tend to fail in close succession. Replacing them together saves labor time and avoids a second repair shortly after the first, particularly on turbocharged or high-mileage International 3700 engines.

More parts for your International 3700

Engine Camshaft Position Sensor KitExhaust ClampHVAC Heater CoreFuel Pressure Sensor ConnectorEngine Oil FilterHVAC Blower Motor WheelShock AbsorberExhaust Manifold

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