Ratios: 45RFE: 3:1 First, 1.67:1 Second,
1.50:1 Second Prime, 1:1 Third, 0.75:1
Fourth, 3:1 Reverse. 545REF: 3:1 First, 1.67:1
Second, 1.50:1 Second Prime, 1:1 Third,
0.75:1 Fourth, 0.67:1 Fifth, 3:1 Reverse.
68RFE and 66RFE: 3.23:1 First, 1.83:1 Sec-
ond, 1.41:1 Third, 1:1 Fourth, 0.81:1 Fifth,
0.62:1 Six th , 4.44:1 Reverse. 65RFE: 3:1
First, 1.67:1 Second, 1.50:1 Third, 1:1 Fourth,
0.75:1 Fifth, 0.67:1 Sixth, 3:1 Reverse.
NAG1 (AK A W5A580/ WA580)NAG1 (AKA W5A580, WA580)
Overview: When Jeep (Chrysler) and
Mercedes danced the dance of a nearly
10-year merger between 1998 and 2007,
some Jeeps and other Chrysler rear-wheel-
drive cars received this Mercedes-based,
five-speed, electronically controlled auto-
matic transmission.Found In: 2002-2018 Jeep, Dodge, and
Chrysler cars, vans, and SUVs with rear-
wheel drive or 4WD behind Chrysler V-6s,
Hemi, and the 3.0L diesel.
Identification: Alloy housing with remov-
able converter housing, round 13-way con-
nector near the front corner of the trans-
mission oil pan, on the right side.
Ratios: 3.59:1 First, 2.19:1 Second, 1.41:1
Third, 1:1 Fourth, 0.83:1 Fifth, 3.2:1 Reverse.8HP70-8HP90
Overview: Great for use in front of
swapped-in diesels like the Cummins R2.8
or the 3.0L Ecodiesel, or for Hemis in a Ram/
Chrysler/Jeep eight-speed. Bigger brother to
the 8HP50 found in Jeeps JL and the 8HP45
found in Dodges and Rams with the 3.6L V-6.
Found In: 2013-present Ram EcoDiesels,
ProMasters, and Grand Cherokees (behind
VM Motori and Fiat 3.0L Diesel s); 2013- pres-
ent Ram 1500s, 2500s, and 3500s, Dodge
Durangos Chargers, and Challengers, Jeep
Grand Cherokees with the 5.7 and 6.2 Hemis.
Identification: Alloy housing.
Ratios: 5:1 First, 3.2:1 Second, 2.14:1 Third,
1.72:1 Fourth, 1.31:1 Fifth, 1:1 Sixth, 0.82:1
Seventh, 0.64:1 Eighth, 3.456:1 Reverse.8HP70-8HP90AW 4
Overview: A moderately strong, elec-
tronically shifted Jeep automatic transmis-
sion with overdrive.
Found In: 1987-2001 Jeep Cherokee with
the 4.0L; 1993-1993½ Jeep Grand Chero-
kee with the 4.0L; 1987-1992 Comanche
with the 2.5L and 4.0L.
Identification: Alloy case with removable
bellhousing.
Ratios: 2.8:1 First, 1.53:1 Second, 1:1
Third, 0.75:1 Fourth.AW44WHEELOFFROAD.COM 4-WHEEL & OFF-ROADOCTOBER 2019 57
SOURCES
ADVANCE ADAPTERS
800.350.2223
advanceadapters.com
ALLPAR.COM
allpar.com
AXIS INDUSTRIES
317.739.3390
axisindustriesusa.com
DRIVEN 4X4 PARTS
602.269.3969
drivenautoparts.com
FCA
fcagroup.comNOVAK
CONVERSIONS
877.602.1500
novak-adapt.com
OFFROAD DESIGN
970.945.7777
offroaddesign.com
PERFORMANCE
AUTOMATIC
240.439.4650
performance
automatic.comAUTOMATIC TRANSMISSION PAN IDENTIFICATION
NAG1 (AKA W5A580/
AW4 WA580)4L80/4L856R806L80/6L908HP70-8HP90AOD/AODE/4R70W45RFE/545RFE/68RFEC-6700R4/4L60/4L60EA500/A518/A618C-4TH400TF727/904/999TH350