Water pump & Thermostat housing gasket - FIPG or Metal gasket.. Or both?

[CrackedManifold]

2005 LX470 240K.

Been a while since i've done a T-belt & water pump on a 2UZ ('02 Sequoia).

I've normally just used ONLY the metal gaskets that come with the Aisin TKT-021 kit.

However, upon removal of the passenger timing cover, i've noticed that there is no metal gasket on the water pump & T-stat housing. Just black RTV gasket sealant?

What is todays consensus on the water pump gasket? Just use the metal gasket, or metal gasket with a coating of gasket sealant?

Also (vaguely) read something about the OEM toyota FIPG sealant (expensive). Should a coating be used on the water pump thread bolts?

Thanks!

 

[Trunk Monkey]

Thread 'Paper gasket between Water Inlet Housing and Water Pump?'

May 26, 2021

I can't find any mention of a paper gasket potentially installed between the LC100 water inlet housing and the water pump anywhere, so I'm throwing a "fish hook" out there to see if anybody else has run into this, and to hear from those of you who have already successfully made this repair. When I removed my old water inlet housing last night in order to replace it with a new one, I was surprised to find what appears to be a paper gasket between the water inlet housing and the water pump (see pic of water pump with paper gasket, as well as original water inlet housing with corroded FIPG...

• Rick Kane
• coolant leak cooling system
• Replies: 1
• Forum: 100-Series Cruisers

 

[CrackedManifold]

Thread 'Paper gasket between Water Inlet Housing and Water Pump?'

May 26, 2021

I can't find any mention of a paper gasket potentially installed between the LC100 water inlet housing and the water pump anywhere, so I'm throwing a "fish hook" out there to see if anybody else has run into this, and to hear from those of you who have already successfully made this repair. When I removed my old water inlet housing last night in order to replace it with a new one, I was surprised to find what appears to be a paper gasket between the water inlet housing and the water pump (see pic of water pump with paper gasket, as well as original water inlet housing with corroded FIPG...

• Rick Kane
• coolant leak cooling system
• Replies: 1
• Forum: 100-Series Cruisers

Thanks for the reply. So in other words, these gaskets should be sufficient enough as-is? I’m not replacing my t-stat housing.

Also, should I apply sealant to the water pump bolts?

 

[Aracobuilt]

Sealant is not necessary for water pump, metal gasket is sufficient. Just make sure you properly torque water pump bolts to spec. As for the water inlet use FIPG. By the way, I am not a fan of FelPro gaskets especially the blue ones. I would only use OEM or Aisin.

 

[CrackedManifold]

Sealant is not necessary for water pump, metal gasket is sufficient. Just make sure you properly torque water pump bolts to spec. As for the water inlet use FIPG. By the way, I am not a fan of FelPro gaskets especially the blue ones. I would only use OEM or Aisin.

Thanks for the heads up. Just ordered an OEM one