Question 1

I have a 2006 toyota tundra SRT 4.7 need to replace the belt and was looking at the complete kit, what is the best choice

Accepted Answer

Hello there.  I have a 2004 TRD 4.7 and am assuming you need to replace the timing belt.  The serpentine belt is much different.  I do not know if they are the same engine so just double check. But Yes, this kit came with everything I needed to change the timing belt along with the water pump and pulleys. The only thing it does not come with is a small tube of gasket sealant for the upper water pump connection.  There isn't a rubber or cork gasket, you have to make one with the proper gasket sealant. Its not difficult, you just squeeze it along the edge and give it 24 hrs but you will definitely need it.  Otherwise the kit is very comprehensive.  I have not had any issues with any of the components and its been 3 or 4 years now.  Good Luck!

Question 2

Hi What brands are the timing belt and water pump? I assume timing belt is Mitsubishi, and water pump is Aisin, but the info is not in description.

Accepted Answer

It's an Aisin kit, so presumably, it's an Aisin water pump (the original, OEM Toyota water pump that came off of my Land Cruiser - I've always been told original Toyota water pumps are made by Aisin - was free of any identifying marks, just like the Aisin pump that came in my TKT-021 kit.  Therefore, since the kit was put together by Aisin and is listed on their website, that lead me to believe it's an Aisin-brand pump.  Also, the timing belt is a Mitsuboshi (yes, that's the correct spelling, so I have to assume there's no connection to Mitsubishi).Bottom line: since this is a kit specified by Aisin on their website, and since it comes with Koyo bearings and an NTN tensioner, I was comfortable Aisin had put together a premium kit, and that's why I chose to go with this kit over any other brand.

Question 3

Will this kit work with my 2004 4.7l v8 4runner? also, is this a complete kit with everything included?

Accepted Answer

This is a complete kit, it has everything you need to do the job. I cant say whether it will fit your 2004. I used this kit on my 2005 Tundra, everthing worked just fine.

Question 4

It is recommended on the 2001 Tundra to change the timing belt at 75k miles and not to extend beyond 100k miles.  I am interested in why the water pump and the timing belt are in one kit.  Does the water pump commonly fail at mileages similar to the timing belt?

Accepted Answer

The reason for changing the water pump during the timing belt job is not water pump failure....  It is because the water pump is behind the timing belt.   It takes about $500 of labor to access the $50 water pump.  As long as you are doing (almost all) of that same labor to access the timing belt, you might as well do the water pump while you have it open.

ASIN	B008EEYWKI
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#49,051 in Automotive ( See Top 100 in Automotive ) #4 in Timing Belt Kits
Brand	AISIN
Brand Name	AISIN
Compatible with Vehicle Type	Truck
Customer Reviews	4.7 out of 5 stars 1,836 Reviews
Global Trade Identification Number	04954514999724
Included Components	Timing Belt Kit
Item Type Name	Timing Belt Kit
Item Weight	9.48 Pounds
Item weight	9.48 Pounds
Manufacturer	Aisin
Manufacturer Part Number	TKT-021
Material	Aluminum Ceramic
Material Type	Aluminum Ceramic
Model Number	TKT-021
Number of Items	1
Number of Packs	1
OEM Equivalent Part Number	TKT 021, TKT021
Part Interchange Info	Aisin TKT-021 fits LEXUS: 1998-00 GS400, 2001-07 GS430, 2003-09 GX470, 1998-00 LS400, 2001-06 LS430, 1998-09 LX470, 1998-09 LX470, 1998-09 00 SC4 00, 2002-10 SC430; TOYOTA: 2003-09 4Runner, 1998-07 Land Cruiser, 2001-09 Sequoia, 2000-09 Tundra
Unit Count	1 Count
Vehicle service type	Truck
Weight Class	Heavy Weight
Weight class	Heavy Weight

AISIN TKT-021 Engine Timing Belt Kit with Water Pump, grey

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