Symptoms
None until a brittle tee cracks and you lose coolant, possibly a long way from home.
The fix, step by step
- With the engine cold, remove the engine cover and lean in from the side.
- The tees sit deep in the engine bay, so expect a long reach.
- Unclip the ground wire attached to the heater hose, work the clamps off with pliers, pull the hoses (soapy water helps), fit new tees and refill the coolant.
- Replace both, because the hot side fails first.
Tools & part numbers
- Step stool
- pliers
- flat screwdriver
- soapy water
- Toyota pipe tee 87248-60460 (x2).
Where to buy the parts
Heater tee, 1998–2007 100 Series/LX470 (EGWH60460)CruiserTeq ↗Amazon ↗
Brass heater tee, 1998–2007 100 Series/LX470 (EGWH60460BR)CruiserTeq ↗Amazon ↗
Toyota water pipe (heater tee) 87248-60460LexusPartsNow (OEM) ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Toyota Land Cruiser 100 Series parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.