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Torsen front diff

DC8

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Nov 27, 2021
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Location
Longmont, CO
Current Ride
2021 Tremor
Has anyone had the Torsen front diff installed? Two dealers have told me it can’t be installed if it didn’t come factory.
 
Anything could be installed if you have the time and money for it. I don't think I've seen anybody on here make that change after the fact yet.
 
It's possible... waiting on a local offroad shop I've used before to get me a quote.
Torsen confirmed that the Ford Performance part number is M-4204-F150LS is the right part for the Tremor.

You'll probably also need a bearing and shim kit to go along with it in case the bearings get damaged when removing the original unit.
 
Had an Eaton installed in the rear diff of the 2016 when I went 4:10’s can’t imagine it being any different, but no idea what the cost is compared to a gear swap as well. I’d assume (I know….) that I’d would be cheaper and easier to just swap in the torsen but 🤷🏻‍♂️
 
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I ended up ordering directly from Ford and used the 15% off coupon they were offering. That got the price down to $570, but after taxes/ shipping it was $617 delivered. If you are paying someone to install you are looking at about 6 hours shop labor. I will have about $1500 invested in it by the time it’s all said and done.

Moral to the story is it is a real bargain at $500 installed from the factory. Unfortunately I rescued my truck from a dealer lot and it did not have it.
 
I ended up ordering directly from Ford and used the 15% off coupon they were offering. That got the price down to $570, but after taxes/ shipping it was $617 delivered. If you are paying someone to install you are looking at about 6 hours shop labor. I will have about $1500 invested in it by the time it’s all said and done.

Moral to the story is it is a real bargain at $500 installed from the factory. Unfortunately I rescued my truck from a dealer lot and it did not have it.
 
I bought mine off the lot because I didn’t want to wait for an order.
Same here and no dealer at that point for me even had one with a factory installed torsen. Even fewer that didn’t want to add some ridiculous market adjustment, so I do not regret it at all. I might still be waiting on my truck if I had ordered.
 
Same here and no dealer at that point for me even had one with a factory installed torsen. Even fewer that didn’t want to add some ridiculous market adjustment, so I do not regret it at all. I might still be waiting on my truck if I had ordered.
I test drove 5-6 that came through my dealer between September and November and none had it. I told them I wouldn’t pay any market adjustment so they “waived” it. Did pay full sticker tho.
 
My dealer had already ordered my Tremor - I previously reserved a nicely equipped XLT (2.7TT, 302A), saw the Tremor was ordered and freaked out when he said I can reserve it (extra $5K but yolo ) . My point, I would have traded the moonroof for Torsen and 360 cameras. Of course back to today, probably would never need the Torsen and I'm enjoying the huge moonroof..

Edit: the "extra $5K" was over the XLT - I would never pay over MSRP ;)
 
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Here is an older thread discussing this that might have more info...

 
I have now had an opportunity to test the torsen install in the snow / ice we have had the last few days and it really is a great addition to the truck. My neighborhood offers a good test track with a long fairly steep hill and a cross street mid way up completely covered in snow and ice. I did starts from dead stop on the incline and 90 deg turns onto the side street while clawing up the hill. With all of the tech and features in the truck, the amount of traction available is pretty amazing. The torsen really shines making turns on slick surfaces. Having both front wheels pulling through the turn makes a clear difference of what I’m used to experiencing in a typical open diff 4 wheel drive system. There is a lot of control. The truck more or less claws through the turn vs. a slip, pull, push jitters, little to no understeer. Very solid. The truck would have made it regardless, but the extra control driving both steering tires makes a noticeable difference.

If you have a 402A, 4 auto w/ torsen is a great setup for varying road conditions. It really makes things easy and makes you look good without even trying. 4H is a close second, but if you find some grip in the turns you get the expected bind having front and rear locked together.
 
I have now had an opportunity to test the torsen install in the snow / ice we have had the last few days and it really is a great addition to the truck. My neighborhood offers a good test track with a long fairly steep hill and a cross street mid way up completely covered in snow and ice. I did starts from dead stop on the incline and 90 deg turns onto the side street while clawing up the hill. With all of the tech and features in the truck, the amount of traction available is pretty amazing. The torsen really shines making turns on slick surfaces. Having both front wheels pulling through the turn makes a clear difference of what I’m used to experiencing in a typical open diff 4 wheel drive system. There is a lot of control. The truck more or less claws through the turn vs. a slip, pull, push jitters, little to no understeer. Very solid. The truck would have made it regardless, but the extra control driving both steering tires makes a noticeable difference.

If you have a 402A, 4 auto w/ torsen is a great setup for varying road conditions. It really makes things easy and makes you look good without even trying. 4H is a close second, but if you find some grip in the turns you get the expected bind having front and rear locked together.
Do you have a parts list of what is needed for the install?
 
I have now had an opportunity to test the torsen install in the snow / ice we have had the last few days and it really is a great addition to the truck. My neighborhood offers a good test track with a long fairly steep hill and a cross street mid way up completely covered in snow and ice. I did starts from dead stop on the incline and 90 deg turns onto the side street while clawing up the hill. With all of the tech and features in the truck, the amount of traction available is pretty amazing. The torsen really shines making turns on slick surfaces. Having both front wheels pulling through the turn makes a clear difference of what I’m used to experiencing in a typical open diff 4 wheel drive system. There is a lot of control. The truck more or less claws through the turn vs. a slip, pull, push jitters, little to no understeer. Very solid. The truck would have made it regardless, but the extra control driving both steering tires makes a noticeable difference.

If you have a 402A, 4 auto w/ torsen is a great setup for varying road conditions. It really makes things easy and makes you look good without even trying. 4H is a close second, but if you find some grip in the turns you get the expected bind having front and rear locked together.
Great explanation of the benefit of torsen, really. I ordered it on my truck and until now didn’t think I would really use it. Reading your post gives me a real world idea of the benefit.
 
Do you have a parts list of what is needed for the install?
Pretty straight forward:
Torsen Diff from Ford Performance / Ford Accessories: M4204F150LS
~1.5 to 2 quarts gear oil 75w-90

The install requires the removal of the the front diff from the vehicle. This is why I elected to have someone else do it and is also what drives all of the shop labor vs. a rear diff. It was more than I wanted to tackle without a lift, laying on my garage floor. The actual install after it’s out seems like it would be very straight forward.

As a side note: the disassembly to get the front diff ready for removal is very similar to what is required for a coilover / puck install. If you are contemplating a lift and torsen I recommend both at the same time.
 
Great explanation of the benefit of torsen, really. I ordered it on my truck and until now didn’t think I would really use it. Reading your post gives me a real world idea of the benefit.
It honestly made more of a difference than I was originally expecting. My original thought is there would be some situation one day maybe where I would be really happy I had it, at that point it would be all worth it. Now I really see it as being useful in more situations than I thought. The best part is it’s just there ready to do it’s thing instantly, without any thought. If you are sending power to the front it’s there working, no extra buttons to push, no downsides in varying conditions. With 4 auto it’s pretty much a set and forget situation for any on road condition I can think of. If it gets super hairy lock the rear diff and you have torque at 4 tires.

I am looking forward to testing it out in different situations.
 
I just got a labor quote of $300 to install a torsen if I remove and bring in the diff myself. Seems like a good deal and I’ll have it 80% there to install the level kit anyway… might be time to order a torsen!
 
I just got a labor quote of $300 to install a torsen if I remove and bring in the diff myself. Seems like a good deal and I’ll have it 80% there to install the level kit anyway… might be time to order a torsen!
Yes definitely the time to do it! As you said you are going to be the majority of the way there. The 15% off coupon is still active on https://accessories.ford.com/ . That gets you the best price out the door I was able to find anywhere.
 
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