Hey I just was comparing size that autozone gave me for my serpentine belt but it looks smaller then factory.

2004 f150 5.4 v8

My number is 4080990
8pk2515

Is this the right belt for me?

Thanks

 

Good Question!!!! Want to get one my self.

 

Common!
So i went to autozone and switched it out for the 4061020 6 ribbed one which is what troyer performance has on their website but the autozone guy wanted me to get a different size.

Does it stretch?
http://www.troyerperformance.com/cgi...talogno=527374

 

No belt stretches. Common misconception. They have a VERY stiff nylon 'web' inside them. They can be broken, but they will not stretch.

Just for the old guys who had belts 'stretch' on their V-belt cars, no they wouldn’t stretch either. They wore down on the sides of the V, which caused them to sit too low in the grooves. But even after 10 years and 100k miles they were exactly the same length when you turned them around and put them on a belt 'stretcher' that's the device you use to measure the belts.
Chris

 

Ohh, well I didnt know that.

so .. 4061020 right size or what?

 

I've been doing searches on the net and can't find squat. Going to go look in the owners manual and see if that at least has a size.

 

owners manual didnt have anything.
Either way its on now.

I found another post on this forum
Gatorback serpentine belt (part# 4061020) _ AutoZone $27.99

So I guess that right, or at least thats what I put on too. Seems to be running fine right now.
https://www.f150online.com/forums/sh...=167766&page=9

 

LOL, Going to have to get one. Thanks for the info.

 

4061020 is the right belt for your application. Tell the A-hole at Auto Zone to take a hike.

 

I put one on my 06 FX4 scab - 5.4L. Part number is 4061030 Ordered from Troyer Performance. I called the dealer and confirmed my stock belt size was 103" first, Crystal at TP confirmed as well. Not sure if this is different than the 04-05... Been running for 2 months now and no more belt squeals at WOT shifts!

 

4080990 is an 8 rib 99" belt. You need a 6 rib 102" belt. "4061020" is the one you need.

 

The Goodyear website says that the belt should be 4061015.

Would either one work?

 

the one on my rig is a Gatorback Serpentine Belt part# 4061025

 

Joe, I can't recall the belt size but you want to be careful. The reason my tensioner pulley snapped on the dunes our first trip was because I had a belt too small. The pulley just couldn't take it, bearings went out and it finally broke. Worst timing ever. I'm sure you can vouch for that

 

I've been running this gatorback for a few weeks now:
4061015
6PK2580