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Heater Hose - Gates - 02-1685

Heater Hose - Gates - 02-1685

This Gates Heater Hose (part number 02-1685) is designed for Land Rover Discovery LJ, Mk1 2.5D mod...

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eBayGATES-OE 02-1685 Heater Hose for LAND ROVER
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Product Information

Full details

This Gates Heater Hose (02-1685) is designed for Land Rover Discovery LJ, Mk1 2.5D (1989-1998) and Defender Cabrio (L316) 2.5 TDI 4x4 (1990-1998) models. Its key benefit is the durable EPDM rubber construction, offering excellent resistance to heat, ozone, and electrochemical degradation, which significantly extends its lifespan. A potential caveat is the specific vehicle compatibility, requiring users to verify fitment for their exact model and year.

All features

Model Part Number02-1685
BrandGates

Extended Product Information

FAQs

What material is the Gates 02-1685 heater hose made of?

The hose is constructed from EPDM rubber, known for its excellent resistance to heat, ozone, and electrochemical degradation.

Which Land Rover models is this heater hose compatible with?

It is designed for Land Rover Discovery LJ, Mk1 2.5D models (1989-1998) and Land Rover Defender Cabrio (L316) 2.5 TDI 4x4 models (Sept 1990 - Nov 1998).

What are the dimensions of this hose?

The hose has an inner diameter of 18 mm and 28 mm, and a length of 601 mm.

Can this hose be used for upper, lower, or bypass applications?

Yes, this hose is suitable for various coolant hose applications, including upper, lower, bypass, and heater hoses.

What are the OEM part numbers this Gates hose replaces?

It is compatible with OEM references ESR3436 and PCH117840.

How should I care for this heater hose?

Regularly inspect the hose for cracks, bulges, or leaks. Ensure clamps are secure and avoid exposure to harsh chemicals or abrasion.

What should I do if I have a coolant leak at the hose connection?

Check hose clamp tightness, ensure the hose is fully seated, and inspect the connection point for damage or debris.

Troubleshooting

Coolant leak at hose connection

Check that the hose clamps are tightened securely. Ensure the hose is fully seated on the connection spigot. Inspect the connection spigot for damage or debris.

Heater not working effectively

Verify the hose is correctly installed as a heater hose. Check for kinks or blockages within the hose. Ensure the cooling system is properly filled and bled of air.

Hose appears swollen or degraded

This may indicate incompatibility with the coolant type or exposure to excessive heat/chemicals. Replace the hose and verify proper coolant mixture and system operation.

Pros and Cons

Pros

  • Durable EPDM rubber offers excellent resistance to heat and environmental degradation.
  • Designed for a precise fit in specific Land Rover models.
  • Compatible with original equipment manufacturer part numbers for easy replacement.
  • Versatile use for multiple coolant hose applications within the system.
  • Provides reliable performance in harsh engine bay conditions.

Cons

  • Specific compatibility with older Land Rover models only.
  • Requires careful verification of fitment for exact vehicle year and model.
  • As a single component, it does not address broader cooling system issues.
  • Requires basic mechanical knowledge for installation.

Setup, Compatibility & Care

Compatibility:

  • Land Rover Discovery LJ, Mk1 2.5D: 1989 - 1998
  • Land Rover Defender Cabrio (L316) 2.5 TDI 4x4: September 1990 - November 1998
  • OEM References: ESR3436, PCH117840

Setup:

  1. Ensure the engine is completely cool before beginning.
  2. Drain the coolant from the system.
  3. Carefully remove the old heater hose, noting its routing.
  4. Clean the connection points on the engine and heater core.
  5. Install the new Gates heater hose, ensuring a secure fit.
  6. Clamp both ends firmly.
  7. Refill the cooling system with the appropriate coolant mixture.
  8. Bleed the cooling system to remove any air pockets.

Care:

  • Regularly inspect the hose for signs of wear, such as cracks, bulges, or leaks.
  • Ensure clamps are secure but not overly tightened, which can damage the hose.
  • Avoid exposing the hose to harsh chemicals or excessive abrasion.

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