Oil and serpentine belts

[Shawn]

Hi All,

I'm looking to source NEW belts for my 06'. I don't want to end up with 10 year old belts that's been sitting on a shelf. Is there a supplier that can verify age of the items they're selling prior to ordering? My car only has 500 miles and I see no visual issues with the existing belts. I assume from the numerous warnings via posts here there's been a lot failures of the oil belts and I want to avoid that failure. I certainly want to be proactive and keep withing the manufactures recommended replacement schedule of these items.

Thanks

 

[twobjshelbys]

I don't recall there being issues with the main serpentine belt. I would leave it alone unless you see signs of aging, e.g., checking or cracking.

People proactively do change the oil pump belt. They do seem to show signs so it's worth doing it. There is a topic here about the belt and a replacement equivalent that may be more readily available. I couldn't locate it with a quick search but maybe someone can find it and if not I'll look later today.

 

[Shawn]

Thanks Tony and I did see the thread discussing the alternate non-Ford belt.

 

[Art138]

I just checked mine a few weeks back when I changed the fuel filter and the integrity appeared fine. I bought an OEM replacement on eBay for 100.00 dollars. Good point on the impact of shelf life. I would also like to know if there is a stamp or indicator which defines date of manufacture.

 

[HighHP]

I purchased all new belts last summer. I had the same concern about buying new old stock belts. So I tried to source belts that are equivalent common use. Some luck. The oil belt is probably made by Continental-ContiTech and is available thru a variety of suppliers. Here are the results of my research:

4G7Z-6B651-AA	Belt, Oil Pump - Ford	83.00
Y-720	Belt, Oil Pump - Goodyear
45PL36	Belt, Oil Pump - From Grainger	46.00
20038721	Belt, Oil Pump - Continental
Y-720 SIlentSync	Belt, Oil Pump - ContiTech	36.00
4G7Z-8620-AA	Belt, Supercharger	48.00
4G7Z-8620-BA	Belt, Main/Alternator	29.00
Dayco 5100883	Belt, Supercharger	50.00
Dayco 5060923	Belt, Main/Alternator	32.00

I ended up buying all three from my local dealer who sourced them from Ford. I could not determine if the belts from other suppliers were for sure correct (probably were), but the prices were better from Ford, except the oil pump belt. The Y-720 SilentSync seems to be available from a variety of suppliers. I figured that I would rather take my chances with Ford. The oil belt did have a date on the package of 2010, remember this was sourced from Ford last summer. The other belts have recent dates on the package. I have attached pics of my old and new belts, the new ones are the brighter white print. Keep us posted on what you find.

 

[Shawn]

Great detail on the pictures and your comparison list. I'm with you and would opt to purchase 10 year old Ford belts rather than taking a chance on aftermarket. I'll certainly dig around and see what's out there.

 

[NorthwoodGT]

I purchased all new belts last summer. I had the same concern about buying new old stock belts. So I tried to source belts that are equivalent common use. Some luck. The oil belt is probably made by Continental-ContiTech and is available thru a variety of suppliers. Here are the results of my research:

4G7Z-6B651-AA	Belt, Oil Pump - Ford	83.00
Y-720	Belt, Oil Pump - Goodyear
45PL36	Belt, Oil Pump - From Grainger	46.00
20038721	Belt, Oil Pump - Continental
Y-720 SIlentSync	Belt, Oil Pump - ContiTech	36.00
4G7Z-8620-AA	Belt, Supercharger	48.00
4G7Z-8620-BA	Belt, Main/Alternator	29.00
Dayco 5100883	Belt, Supercharger	73.00
Dayco 5060923	Belt, Main/Alternator	32.00

I ended up buying all three from my local dealer who sourced them from Ford. I could not determine if the belts from other suppliers were for sure correct (probably were), but the prices were better from Ford, except the oil pump belt. The Y-720 SilentSync seems to be available from a variety of suppliers. I figured that I would rather take my chances with Ford. The oil belt did have a date on the package of 2010, remember this was sourced from Ford last summer. The other belts have recent dates on the package. I have attached pics of my old and new belts, the new ones are the brighter white print. Keep us posted on what you find.

not sure what your price source is but you might want to update. also the -BA belt is now obsolete from Ford.
the oil belt run was done in 2010. you will not find a newer date code (I don't believe) but shelf wear and age doesn't make a belt weak.
continual engine heat soak and cooling is what usually wears out a belt. jmo

 

[HighHP]

Yeah, I mostly think that as well. That's why I installed the 10 year old belt. However, I assume age and oxygen will eventually deteriorate the rubber, but how long??? I think I might buy the ContiTech one just to see if it is the same. Then I will have a spare, so ten years from now I can install another 10 year old belt.

 

[nota4re]

The ContiTech is a little thicker and stiffer as I reported in a related thread. I decided not to use it.

 

[HighHP]

nota4re - Just found your Contitech vs Motorcraft belt comparison. Great info to know. The answer to better and/or lower cost alternatives seems to always result in the same answer. Stick with OEM.

 

[Shawn]

Ordered the following from Ford along with a few other maintenance items. I've included the price I paid and received a confirmation email all will ship by 2/20.

4G7Z-8620-AA	Belt, Supercharger	45.92
4G7Z-8620-BA	Belt, Main/Alternator	27.94

 

[HighHP]

Why not the oil pump belt, since you have the car apart for the other belts?

 

[Shawn]

Why not the oil pump belt, since you have the car apart for the other belts?

No plans on changing any of the belts they look great just keeping as spares. I have an oil pump belt I bought awhile back.

 

[cedarstang]

Since most belts are obsolete and no longer available, has anyone used the Deco 5100883 supercharger belt or tried the Ford part number 4G7Z-6B651-AA oil pump from Ford? Sooner or later, we need to change the belts. Cars are 20 years old, and I have 15,000 on the clock.I would not ride on 20-year-old tires. I believe belts are the same. Any help would be greatly appreciated.

 

[Fast Freddy]

I just checked mine a few weeks back when I changed the fuel filter and the integrity appeared fine. I bought an OEM replacement on eBay for 100.00 dollars. Good point on the impact of shelf life. I would also like to know if there is a stamp or indicator which defines date of manufacture.

Where and when did you buy a fuel filter from? My Ford dealership has me on a wait list and could not tell me how many people are on the list before me. Praying that my fuel pumps can survive until I can get one

 

[T.K.]

I purchased all new belts last summer. I had the same concern about buying new old stock belts. So I tried to source belts that are equivalent common use. Some luck. The oil belt is probably made by Continental-ContiTech and is available thru a variety of suppliers. Here are the results of my research:

4G7Z-6B651-AA	Belt, Oil Pump - Ford	83.00
Y-720	Belt, Oil Pump - Goodyear
45PL36	Belt, Oil Pump - From Grainger	46.00
20038721	Belt, Oil Pump - Continental
Y-720 SIlentSync	Belt, Oil Pump - ContiTech	36.00
4G7Z-8620-AA	Belt, Supercharger	48.00
4G7Z-8620-BA	Belt, Main/Alternator	29.00
Dayco 5100883	Belt, Supercharger	50.00
Dayco 5060923	Belt, Main/Alternator	32.00

I ended up buying all three from my local dealer who sourced them from Ford. I could not determine if the belts from other suppliers were for sure correct (probably were), but the prices were better from Ford, except the oil pump belt. The Y-720 SilentSync seems to be available from a variety of suppliers. I figured that I would rather take my chances with Ford. The oil belt did have a date on the package of 2010, remember this was sourced from Ford last summer. The other belts have recent dates on the package. I have attached pics of my old and new belts, the new ones are the brighter white print. Keep us posted on what you find.

Good morning Gentlemen,
Today I removed the belts on my 2006 Ford GT and found the following numbers:
- 4G7V-8620-BA
- 4G7V-8620-AA
- 4G7V-6B651-AA
They are the same numbers which are detailed in the table above with 1 difference. My belt numbers start with the letter "V" and the part numbers above start with the letters "Z". Can someone please explain the difference and whether the belts are compatible and I can use the equivalent Dayco numbers detailed above.
Thank you. Best regards, Tarek

 

[HighHP]

The number on the part is typically not the same as the actual part number. The number on the part is the engineering number, or something like that. Here is my latest belt list. You can see the part number trend on some. The 10 means 10 rib, 6 means 6 rib. The last four numbers are inches 0884 = 88.4.

4G7Z-6B651-AA	Belt, Oil Pump - Ford
4G7Z-6B651-AA	Belt, Oil Pump - Goodyear	Goodyear: Y-720
4G7Z-6B651-AA	Belt, Oil Pump - From Grainger	Grainger: 45PL36
4G7Z-6B651-AA	Belt, Oil Pump - Continental	Continental: 20038721
4G7Z-6B651-AA	Belt, Oil Pump - ContiTech	ContiTech: Y-720 SIlentSync
4G7Z-8620-AA	Belt, Supercharger
4G7Z-8620-AA	Belt, Supercharger	Dayco 5100883, AC Delco Heavy Duty K100884HD
4G7Z-8620-AA	Belt, Supercharger	NAPA 25-100884, Gates K100884, Gates K100884HD
4G7Z-8620-BA	Belt, Main/Alternator
4G7Z-8620-BA	Belt, Main/Alternator	Dayco 5060923, Continental 4060922
4G7Z-8620-BA	Belt, Main/Alternator	NAPA 25-060923, Gates K060923, Gates K060923HD

 

[GT@50]

Don't use the AC Delco Heavy Duty K100884HD belt. It'll give your car cooties.

 

[T.K.]

The number on the part is typically not the same as the actual part number. The number on the part is the engineering number, or something like that. Here is my latest belt list. You can see the part number trend on some. The 10 means 10 rib, 6 means 6 rib. The last four numbers are inches 0884 = 88.4.

4G7Z-6B651-AA	Belt, Oil Pump - Ford
4G7Z-6B651-AA	Belt, Oil Pump - Goodyear	Goodyear: Y-720
4G7Z-6B651-AA	Belt, Oil Pump - From Grainger	Grainger: 45PL36
4G7Z-6B651-AA	Belt, Oil Pump - Continental	Continental: 20038721
4G7Z-6B651-AA	Belt, Oil Pump - ContiTech	ContiTech: Y-720 SIlentSync
4G7Z-8620-AA	Belt, Supercharger
4G7Z-8620-AA	Belt, Supercharger	Dayco 5100883, AC Delco Heavy Duty K100884HD
4G7Z-8620-AA	Belt, Supercharger	NAPA 25-100884, Gates K100884, Gates K100884HD
4G7Z-8620-BA	Belt, Main/Alternator
4G7Z-8620-BA	Belt, Main/Alternator	Dayco 5060923, Continental 4060922
4G7Z-8620-BA	Belt, Main/Alternator	NAPA 25-060923, Gates K060923, Gates K060923HD

Thanks for the details. So basically I should ignore the first 4 numbers and letters of the OEM belt part number and only take the rest of the part number into consideration.

 

[extrap]

Thanks for the details. So basically I should ignore the first 4 numbers and letters of the OEM belt part number and only take the rest of the part number into consideration.

I just snapped this pic of mine that Rich Brooks installed Aug '24. Labelled "Continental Multi V 4100886 10PK2250" I've never bothered to read any of them before, so let me know if you need me to read the rest of the numbers farther down. I don't think I can easily get eyes or my camera on the other belts.