How to determine which transmission is in your LX *

[fnkychkn]

This information is found on the body code plate which is located in the engine compartment on the front right side shock tower mounting front panel. the first three digits on the bottom line are the transmission code.
DG6 = 42RLE
DGV = 42RLE with VLP (variable line pressure)
DGJ = NAG1


https://w05.dealerconnect.chrysler.com/service/mds2002/serviceInfo/en_US/813c4c16.gif

1 - PRIMARY PAINT
2 - SECONDARY PAINT
3 - VINYL ROOF
4 - VEHICLE ORDER NUMBER
5 - CAR LINE SHELL
6 - PAINT PROCEDURE
7 - ENGINE
8 - TRIM
9 - TRANSMISSION
10 - MARKET
11 - VIN

[dchemi]

Is there one transmission for the Magnum RT that is better than the others?

[fnkychkn]

Is there one transmission for the Magnum RT that is better than the others?
only one transmission used with the RT 5.7L, and that's the NAG1.

[RandomAccess]

Does that include the AWD models?

[fnkychkn]

Does that include the AWD models?
AWD models only available with NAG1.

[fnkychkn]

as far as i know:
2005 2.7L & 3.5L RWD models use 42RLE trans.
2005 3.5L AWD models use NAG1 trans.
2005 5.7L RWD & AWD models use NAG1 trans.
2005 6.1L models use NAG1 trans.
2006 2.7L models could be equipped with either 42RLE or 42RLE with VLP trans.
early build 2006 3.5L RWD models could be equipped with either 42RLE or 42RLE with VLP trans.
late build 2006 3.5L RWD use NAG1 trans.
2006 3.5L AWD models use NAG1 trans.
2006 5.7L RWD & AWD models use NAG1 trans.
2006 6.1L models use NAG1 trans.

[RandomAccess]

Thanks FC... Interesting that the AWD and RWD models have the same tranny... I would have thought a different model would be in order... but guess not.

[fnkychkn]

same basic trans but i think the tail shaft/extension housing might be different. never had that close a look.

[LH_Chris]

Does anyone know if the NAG1 is a direct bolt in/upgrade for the V6 cars? I assume it would be, Im just making sure. Does anyone know how much power these trannys can handle?

[sgbaird]

Does anyone know if the NAG1 is a direct bolt in/upgrade for the V6 cars? I assume it would be, Im just making sure. Does anyone know how much power these trannys can handle?

This brings up another question: Since the newest SXT models are said to be using the same transmission as the R/T, how can one be certain that the car does have whe NAG1 transmission?

[fnkychkn]

Does anyone know if the NAG1 is a direct bolt in/upgrade for the V6 cars? I assume it would be, Im just making sure. Does anyone know how much power these trannys can handle?
not sure if housing/innards are the same as RT.

[fnkychkn]

This brings up another question: Since the newest SXT models are said to be using the same transmission as the R/T, how can one be certain that the car does have whe NAG1 transmission?
see first post in this thread.

[jfargus]

as far as i know:
2005 2.7L & 3.5L RWD models use 42RLE trans.
2005 3.5L AWD models use NAG1 trans.
2005 5.7L RWD & AWD models use NAG1 trans.
2005 6.1L models use NAG1 trans.
2006 2.7L models could be equipped with either 42RLE or 42RLE with VLP trans.
2006 3.5L RWD models could be equipped with either 42RLE or 42RLE with VLP trans.
2006 3.5L AWD models use NAG1 trans.
2006 5.7L RWD & AWD models use NAG1 trans.
2006 6.1L models use NAG1 trans.

Correction

2006 3.5L RWD Uses only NAG1 trans across the board. 42RLE is only with 2.7 from now on.

Another easy way to tell your 4speed from 5 speed is to look for the autostick shifter in the car. The 4 speeds have PRND3L the 5speed only has PRND

[jfargus]

Does anyone know if the NAG1 is a direct bolt in/upgrade for the V6 cars? I assume it would be, Im just making sure. Does anyone know how much power these trannys can handle?

It can handle upto 420ftlbs of torque maybe even just a little over that for overhead protection.

[SmoovC]

This information is found on the body code plate which is located in the engine compartment on the front right side shock tower mounting front panel. the first three digits on the bottom line are the transmission code.
DG6 = 42RLE
DGV = 42RLE with VLP (variable line pressure)
DGJ = NAG1

What exactly is VLP? What is the benefit? Thanks fnky! You da' man!

[fnkychkn]

Correction

2006 3.5L RWD Uses only NAG1 trans across the board. 42RLE is only with 2.7 from now on.

Another easy way to tell your 4speed from 5 speed is to look for the autostick shifter in the car. The 4 speeds have PRND3L the 5speed only has PRNDactually, early build '06 3.5L models still used 42RLE.

[fnkychkn]

What exactly is VLP? What is the benefit? Thanks fnky! You da' man!VLP (variable line pressure) equipped transmissions use a TCM controlled solenoid to bleed off excess pressure from the pump when pressure demand is low. this reduces parasitic drag caused by the oil pump under low load conditions helping to improve fuel mileage.

[jimmybamslam]

It can handle upto 420ftlbs of torque maybe even just a little over that for overhead protection.

But this tranny is used on the 6.1L, which has about 420ftlbs of torque. I think it can handle much more than that. DCX wouldn't release a car that is at it's max load capabilities. If that were the case, an SRT owner doesn't stand a chance with that tranny for the longterm.

[NAS T MAG]

If all the '05 transmissions are the same, why do some who have an SC tuner see "5" and I don't?

[fnkychkn]

But this tranny is used on the 6.1L, which has about 420ftlbs of torque. I think it can handle much more than that. DCX wouldn't release a car that is at it's max load capabilities. If that were the case, an SRT owner doesn't stand a chance with that tranny for the longterm.
the NAG1 transmission used in LX vehicles is the W5A580.
W = hydraulic torque converter
5 = five forward speeds
A = automatic transmission
580 = maximum input torque capacity in newton/meters

580 newton meters = 427.786 ft/lbs

[fnkychkn]

If all the '05 transmissions are the same, why do some who have an SC tuner see "5" and I don't?
i beleive there is a SC update to address this issue.

[newfiecharger]

Would an easy way to identify the NAG1 over the 42RLE would be to see if the plug is near the front right side of the transmission pan. (the plug that leaks trans fluid)? I'm guessing that the 42RLE would not have this plug?

[BrilliantBlackHemi]

So what's the difference in the German built NAG1 5 speed in the SRTs and the US built versions in the RTs, Daytonas and 300Cs?

At the factory tour a couple of years ago, they told us the SRT transmissions were built with more clutches and higher line pressure. Does this change the torque rating in any way?

Then they also told us that, in the SRT, the drivelines were beefed up to 4 bolt connection, the rear gears were bigger/stronger and so are the axles.

[MagNite]

Well, I couldn't find the plate you are talking about, but I do have autostick.... so that would make it a 5 speed, correct?

[fnkychkn]

Would an easy way to identify the NAG1 over the 42RLE would be to see if the plug is near the front right side of the transmission pan. (the plug that leaks trans fluid)? I'm guessing that the 42RLE would not have this plug?
the NAG1 pan is rectangular-ish and silver (unpainted).
the 42RLE pan is square-ish and painted black.

[fnkychkn]

At the factory tour a couple of years ago, they told us the SRT transmissions were built with more clutches and higher line pressure. Does this change the torque rating in any way?

Then they also told us that, in the SRT, the drivelines were beefed up to 4 bolt connection, the rear gears were bigger/stronger and so are the axles.
all true except the part about more clutches. the amount of clutches is the same. only the number of discs per clutch is different.
more clutch discs = less torsional stress on each clutch disc.
more line pressure = higher torque required before clutches start to slip.

[Racer-X]

Could you possibly post a picture of where that number is located?? I Can't seem to find that body tag you're talking about. I have an '06 Charger SXT. Thanks!!!

[Hemi RT]

You are saying that the NAG1 tranny is the same in the RT/SRT except for them putting in larger clutch drums (same external size) that hold more clutches and a raised line pressure. If that is true then why does an RT tranny, when put in manual low force shift itself and the SRT tranny just stays in low no matter what until the rev limiter cuts in and out but it still stays in low??

Can you explain that??

[fnkychkn]

You are saying that the NAG1 tranny is the same in the RT/SRT except for them putting in larger clutch drums (same external size) that hold more clutches and a raised line pressure. If that is true then why does an RT tranny, when put in manual low force shift itself and the SRT tranny just stays in low no matter what until the rev limiter cuts in and out but it still stays in low??

Can you explain that??
different TCM programming. however, the latest SRT8 TCM update will force an upshift even in autostick.

[Pug]

Well, I have to go take a look at mine now - but I did not see my particular model/configuration there. 2005 Chrysler 300 3.5. I know I got cheated out of the autostick, but would hate to find out that it also screwed me out of a 5th gear and better mileage!

[fnkychkn]

Well, I have to go take a look at mine now - but I did not see my particular model/configuration there. 2005 Chrysler 300 3.5. I know I got cheated out of the autostick, but would hate to find out that it also screwed me out of a 5th gear and better mileage!
all '05 RWD 300s with the 3.5L engine were mated to the 42RLE four speed transmission.

[bubbamagnum]

The 5.7 tranny is considered a 581 5 speed tranny correct?

[fnkychkn]

The 5.7 tranny is considered a 581 5 speed tranny correct?
W5A580
W = A transmission using a hydraulic torque converter.
5 = 5 forward gears.
A = Automatic Transmission.
580 = Maximum input torque capacity in Newton meters.

[UK CHRYSLER 300C]

AWD models only available with NAG1.

what about the euro diesel version?what tranny does that have?any ideas?,thanks

[fnkychkn]

what about the euro diesel version?what tranny does that have?any ideas?,thanksnot 100% sure but i believe the 3.0L diesel is mated to the NAG1 five speed.

[wildbill13]

ok i must be an idiot. i looked allover the passenger side tower and everywhere around it and cannot find this badge anywhere. mine was built in 6/05 and doesnt have the autostick so im guessing its not the 5 spd....

[fnkychkn]

ok i must be an idiot. i looked allover the passenger side tower and everywhere around it and cannot find this badge anywhere. mine was built in 6/05 and doesnt have the autostick so im guessing its not the 5 spd....
correct, mr. bill! no autostick = 42RLE (4 speed).

[wildbill13]

but what about vlp and preventing parasitic loss???? ohh the pain..... i probably dont have that either... :doh::bahdumcha:

[HEMI~C~]

Has anyone verified any of the internal differences between the 3.5/5.7/6.1 NAG1's? I know externally the only thing I can see is the rear driveshaft mounting pad (3 arms vice the four of the 6.1).

If we all indeed have the W5A580 then there should be no differences in clutch packs etc given the torque rating right? Or are there variants of the W5A580?? If so what are the designators in Mercedes terms? ( 722.6XX ??)

[fnkychkn]

ok i must be an idiot. i looked allover the passenger side tower and everywhere around it and cannot find this badge anywhere. mine was built in 6/05 and doesnt have the autostick so im guessing its not the 5 spd....

thi is where it's supposed to be:

https://w05.dealerconnect.chrysler.com/service/mds2002/serviceInfo/en_US/23.jpg

[fnkychkn]

Has anyone verified any of the internal differences between the 3.5/5.7/6.1 NAG1's? I know externally the only thing I can see is the rear driveshaft mounting pad (3 arms vice the four of the 6.1).

If we all indeed have the W5A580 then there should be no differences in clutch packs etc given the torque rating right? Or are there variants of the W5A580?? If so what are the designators in Mercedes terms? ( 722.6XX ??)
i have very limited experience with the internals of the NAG1 transmission. this would be a question for BuilderBill of SouthernHotrod. please post findings here when you get more info. thanks.

[wishing for hemi]

Has anyone verified any of the internal differences between the 3.5/5.7/6.1 NAG1's? I know externally the only thing I can see is the rear driveshaft mounting pad (3 arms vice the four of the 6.1).

If we all indeed have the W5A580 then there should be no differences in clutch packs etc given the torque rating right? Or are there variants of the W5A580?? If so what are the designators in Mercedes terms? ( 722.6XX ??)


when the answer to the differances or if there are infact 3 variations of the nag1 could you please post your findings chris i need to know what i can handle in terms of boost and its gonna be here soon

[jimponder]

Who makes the tranny lines for these? I have a box (pressure sensor?) on my tranny lines half way to the tranny cooler. I need the tranny line from that box up to the cooler. (When manufactured, it was too close to the power steering pulley which wore out the line and spewed tranny oil all over the place.) I have a 3.5HO 5speed 2006 Charger. I went to the dealer and no one knew what I was talking about. They kept telling me my tranny was a four speed which I know is a 5. I even had one of the mechanics pull a 07 in to show him what I was talking about. I need to find out who makes these lines so I can get one. Otherwise, I'm forced to make one myself. Is there anyway for us as humans to check the fluid levels in these trannies?:banghead:

[fnkychkn]

Who makes the tranny lines for these? I have a box (pressure sensor?) on my tranny lines half way to the tranny cooler. I need the tranny line from that box up to the cooler. (When manufactured, it was too close to the power steering pulley which wore out the line and spewed tranny oil all over the place.) I have a 3.5HO 5speed 2006 Charger. I went to the dealer and no one knew what I was talking about. They kept telling me my tranny was a four speed which I know is a 5. I even had one of the mechanics pull a 07 in to show him what I was talking about. I need to find out who makes these lines so I can get one. Otherwise, I'm forced to make one myself. Is there anyway for us as humans to check the fluid levels in these trannies?:banghead:
the "box" half way up the lines is a thermostat. the cooler lines are serviced as an assembly from the transmission to the cooler.
pm me the last 9 digits of your VIN and i'll get you a part number for the cooler line assembly.

to learn how to check fluid level, click here.

[jimponder]

X6H486425 are the last 6 of the VIN.
Thanks in advance. It's good to know there's a pro out there to assist on funky issues like this.
If/when you find the part number is there a way if you can tell if there is a spot I can order it from? (I am assuming you are in a dodge dealership or parts place of some sort.)
Thanks again.
-Jim Ponder

[fnkychkn]

X6H486425 are the last 6 of the VIN.
Thanks in advance. It's good to know there's a pro out there to assist on funky issues like this.
If/when you find the part number is there a way if you can tell if there is a spot I can order it from? (I am assuming you are in a dodge dealership or parts place of some sort.)
Thanks again.
-Jim Ponder
funky issues is what i'm all about. :mrgreen:

Tube and Hose, transmission oil cooler; P/N 04598005AF
check out our vendor aisle for a vendor near you. we have Eastway chrysler and Mopar supercenter.

btw, welcome to LXforums. :)

[jimponder]

I've looked high and low for this part number on the web and can't find it anywhere. Do you have a website or a store phone number I can get so I can put this misery behind me? :panic:

[jimponder]

To aid all of you as well. Here's a release from Chrysler with step by steps:
http://www.wkjeeps.com/tsb/tsb_wk_2101105a.pdf

Shudder in the tranny is likely a result of .5% water in the tranny fluild!

[QuickRT2SRT]

Well if my SRT8 tranny is only made to handle 580 nm of torque then I am in for a warranty call before long I suppose since mine with limited mods is peaking at 635-640 nm of torque already. I would imagine that there are a lot of people out there with more mods making more power than I am that are also running the stock NAG1 tranny behind their 6.1's. I am thinking there is the at least slight possibility that the SRT NAG1's are modified to handle more torque then 580...
But then I could be wrong and as it wouldnt be the first time it also likely won't be the last time either.

[JagdCharger]

I worked at ITPII built the nag1 for two years, had no clue the srt nag was imported from germany..interesting. That tranny is a pain in the ass to assemble and 30% of the assembly is completed by robots