Rear end -

4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

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Old 06-27-2013, 05:32 PM   #1
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Default Rear end

Hey guys, ive got an 04 gt 5 speed with 60000 miles and im looking to put in 3.73's. Aside from the gears is there anything else ill need to replace? Thanks
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Old 06-27-2013, 05:43 PM   #2
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60k smells like big maintenance time
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Old 06-27-2013, 07:06 PM   #3
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That's not very much mileage but then again, the car is 10 years old almost. Might go ahead and replace seals and bearings since its apart. Also if youre thinking about any other rear end upgrades, nows the time to do it.
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Old 06-27-2013, 07:44 PM   #4
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As mentioned above, with the car being almost 10 year old and 60k miles down the road, it's a good idea to replace the bearings and seals in the differential. Our differential install kit includes everything you need to completely refresh your differential. This way you won't have to worry about the diff needing any maintenance for another 10 years or 60k!

Let me know if you have any questions or concerns!

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Old 06-27-2013, 08:39 PM   #5
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I replaced my gears with 155k and 13 years on the clock and didn't need bearings. The only thing I replaced was a leaky axle seal. Look at the bearings. If they have wear marks replace them. If they don't, leave them in there. If a part is going to fail it will usually fail fairly quickly without some kind of outside force acting on it.

If you get the FRPP gears you will also have a much easier time shimming the rear end since the bearings are broke in to those shims. Occasionally you will even get a new gear that goes right in and doesn't need any adjustment for that very reason.
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