This is primarily for the newer Jeeps with a spin on clutch like my 2004 and the short answer is no, you should get what is called a severe duty clutch, the Mopar replacement or Hayden part number 2791.
@Longwhitejeep posted a few pictures that show pretty well what this is about.
A few years back I did a cooling system overhaul and purchased a Hayden 2771 heavy duty fan clutch. It is the Hayden clutch most part guides recommend for the 2004 wrangler. They cost about $40 now compared to the Mopar clutch which comes in at just over $120. I figured at the time heavy duty was great and it worked fine.
This time around I figured I'd research again and see if standard duty was available or what the best option was. Turns out Hayden shows each clutch design in their application guide:
Here is the Mopar fan clutch for the 2004 Jeep part number 68064765AA:
it appears the Hayden extreme duty fan clutch part number 2791 is very similar to what was installed from the factory and the guides list the wrong part. I'll leave it to everybody else to guess why they list the heavy duty and not the severe duty clutch, I don't really know. The severe costs about two dollars more than the heavy duty Hayden and about $90 less than the Mopar clutch. I think the Hayden heavy duty and severe duty designs in general are sold by several companies for our Jeeps, for example Murry and Four Seasons looks like they make a heavy duty style and other aftermarket clutches are the severe duty design.
If you read the details above in the Hayden application guide the extreme duty engages slightly less when idle and slightly more when active and is supposed to last a lot longer. I did notice when I installed the clutch it makes less noise than the heavy duty clutch did when the engine is cold and you can hear it engage a little sharper when things get hot but that's very subtle. It makes less noise on the highway as well. I haven't put many miles on it but I'll report back if there is anything to report.
There is nothing wrong with the 2771 or heavy duty clutch. I don't think anybody needs to swap one because of this. It worked fine for me, I just think it's the wrong part if you are shopping for a Hayden replacement.
@Longwhitejeep posted a few pictures that show pretty well what this is about.
A few years back I did a cooling system overhaul and purchased a Hayden 2771 heavy duty fan clutch. It is the Hayden clutch most part guides recommend for the 2004 wrangler. They cost about $40 now compared to the Mopar clutch which comes in at just over $120. I figured at the time heavy duty was great and it worked fine.
This time around I figured I'd research again and see if standard duty was available or what the best option was. Turns out Hayden shows each clutch design in their application guide:
Here is the Mopar fan clutch for the 2004 Jeep part number 68064765AA:
it appears the Hayden extreme duty fan clutch part number 2791 is very similar to what was installed from the factory and the guides list the wrong part. I'll leave it to everybody else to guess why they list the heavy duty and not the severe duty clutch, I don't really know. The severe costs about two dollars more than the heavy duty Hayden and about $90 less than the Mopar clutch. I think the Hayden heavy duty and severe duty designs in general are sold by several companies for our Jeeps, for example Murry and Four Seasons looks like they make a heavy duty style and other aftermarket clutches are the severe duty design.
If you read the details above in the Hayden application guide the extreme duty engages slightly less when idle and slightly more when active and is supposed to last a lot longer. I did notice when I installed the clutch it makes less noise than the heavy duty clutch did when the engine is cold and you can hear it engage a little sharper when things get hot but that's very subtle. It makes less noise on the highway as well. I haven't put many miles on it but I'll report back if there is anything to report.
There is nothing wrong with the 2771 or heavy duty clutch. I don't think anybody needs to swap one because of this. It worked fine for me, I just think it's the wrong part if you are shopping for a Hayden replacement.
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