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Discussion Starter · #1 ·
I'm getting ready to change the differential fluid in my truck which is a 2006 Mega Cab and had a couple of questions. From what I read in the post and seen in the pictures, there isn't a gasket on the 1500 but according to a posting under the pictures, someone stated that there is a gasket that comes on the 2500 and 3500's. Since the Mega Cab is a 1500 on a 2500 frame, is there a gasket there, or do I just need the sealant as the pictures describe? Also, how do I know which front axel I have between a c205fd, 9 1/4 AA or 9 1/4 AA EL? What does the EL stand for and is Trac-Lok an option on these trucks? It seems like I'm stuck between a 1500 and 2500 and am not sure which way to turn as far as maintenance. I've included the build sheet that Dodge sent me. Thanks in advance,


*M9 - Cloth 40/20/40 Prem Bench Seat
-D5 - Med Slate Gray
AHC - Trailer Tow Group
APAS - Monotone Paint
A85P - 5.7L ENG (EZA)/5SPD A/T 5-45RFE(DGQ)
BAZS - 136 Amp Alternator
BCQP - 750 Amp Maintenance Free Battery
BRTS - Anti-Lock 4-Wheel Disc Brakes
CBEP - 40/20/40 Split Bench Seat
CGDS - Front Height Adjust Shoulder Belts
CG1S - Next Gen Multistage Front Air Bags**
CKES - Front Seat Area Carpet
CLES - Front & Rear Floor Mats
CSPS - Passenger Assist Handle
CSXP - Rear 60/40 Split Folding Seat
CUMP - Mini Floor Console
CUSS - Overhead Console w/Trip Computer
CU3S - Behind the Seat Storage / Bin
CVHP - Front Center Seat Cushion Storage
DGES - All 5-Speed Automatic Transmissions
DGQ - 5-Spd Automatic 545RFE Transmission
DHAP - Lock-Up Torque Converter
DH3S - Elec Shift-on-the-Fly Transfer Case
DJQS - 5,200# Front Axle
DMES - 3.73 Axle Ratio
DRWS - 10.50 Rear Axle
DSA - Anti-Spin Differential Rear Axle
EAGC - All Gas Engine
EZA - 5.7L Hemi V8 Engine
GACS - Tinted Glass Windows
GFE - Rear Power Sliding Window
GNAS - Rear View Day/Night Mirror
GNMS - Passenger Side Sun Visor w/Mirror
GTSS - Power Heated Mirrors, Fold-Away
GVBC - All Vehicles W/Power Mirrors
GXMS - Remote Keyless Entry
GXXS - Sentry Key Theft Deterrent System
HAAS - Air Conditioning
HGBS - Dash Liner Insulation
HGFS - Floor Tunnel Insulation
JAYS - Instrument Cluster w/Tach
JBYS - Instr. Panel Color Keyed Bezel
JCBS - 120 MPH Primary Speedometer
JHAS - Var Intermittent Windshield Wipers
JJAS - Cigar Lighter
JJBS - Dual Note Electric Horns
JJJS - 12V Auxiliary Power Outlet
JPBS - Power Locks
JPDS - Power Windows, Driver One-Touch
JTHP - Power 6-Way Driver Seat
LMAS - Halogen Headlamps
LNJ - Fog Lamps
LPES - Cargo Lamp
MBFS - Bright Rear Bumper
MCMS - Body Color Upper Fascia
MCTS - Bright Front Bumper
MDAS - Front License Plate Bracket
MFDS - Bright Grille
MGAS - Ram's Head Badge
MHAS - Black Windshield Moldings
MTDS - SLT Badge
MUSS - 4X4 Badge
MWDS - Removable Tailgate w/Caliper Latches
MXBS - Front Air Dam
MXCP - Front Bumper Sight Shields
NAA - Federal Emissions
NBKP - EVAP Control System
NFUS - 34 Gallon Fuel Tank
NHBP - Auxiliary Transmission Oil Cooler
NHMS - Speed Control
NHNP - Electronically Controlled Throttle
NMCS - Heavy Duty Engine Cooling
NZDP - Next Generation Engine Controller
PDMA - Mineral Gray Met. Clear Coat
QDMS - Mineral Gray Met. Clear Coat
RAAC - All Radio Equipped Vehicles
RAQ - AM/FM CD 6-Disc MP3 Radio
RCKP - Infinity Speakers
RDDP - Fixed Long Mast Antenna
RSA - Sirius Satellite Radio
SBES - Power Steering
SCV - Leather Wrapped Steering Wheel
SFBS - Front Heavy Duty Shock Absorbers
SGBS - Rear Heavy Duty Shock Absorbers
SHAS - Front Stabilizer Bar
SUAS - Tilt Steering Column
TBBS - Full Size Spare Tire
TBMS - Tire Carrier Winch
TT5 - LT265/70R17E OWL On/Off Rd Tires
TZGP - BF Goodrich Brand Tires
WF1S - 17" Steel Spare Wheel
WGD - 17X8.0 Forged Aluminum Wheels
WLZC - All Aluminum Wheels
WMJP - Center Hub
XA8S - Non Adjustable Pedals
XBSS - Pickup Box
XCZP - Cargo Box Painting
XFHP - Hitch - Class IV Receiver
XFKP - 7 Pin Wiring Harness
XFUS - Trailer Tow w/4-Pin Connector Wiring
X95P - Call SIRIUS to [email protected]
X97P - 1-Year Service Provided by SIRIUS
YAAS - Build To U S Market Specifications
YEP - Manuf Statement of Origin
YG7A - 2 Additional Gallons of Gas
ZCCP - Spring - Left Front
ZKVP - Spring - Left Rear
ZRBP - Spring - Right Front
ZYVP - Spring - Right Rear
Z7DS - GVW Rating - 8510#
0A8A - No description found
1AAS - U.S. Dealer Retail
151S - Zone 51-Chicago
2TGA - Customer Preferred Package 2TG
26G - Customer Preferred Package 26G
4KZP - 4X4 Tracking
5B3 - Cargo Box Tracking
5IFS - DH-Vehicle Family
5I4S - Four Wheel Drive (4WD)/(4X4)
5YFS - Mega Cab
5ZES - 6 1/2 FT. Cargo Box
5ZLS - 1500 GVW
594S - Vehicle Order Tracking
6FE - Paint Order Code
6USS - Label - U.S. Specifications
616S - Iowa State Code
916S - Iowa State Code

Tank Mech
3,687 Posts
10.5 rear axle, and TracLok too. I don't know. My 9.25 sealed up just fine with the black RTV. I'm kinda thinking about using it from now on (the Army uses RTV for EVERYTHING, maybe I will too now, lol).

1,111 Posts
Although it's a "1500" it's considered a "1500 HD" and is still equipped with the 8-lug AA's (American Axles). You will not need any RTV to complete your differential can simply re-use the existing gaskets.


10,359 Posts
Dodge actually uses RTV for many things,even some wheel cylinders on certain year cars have RTV around the perimiter of the part where it was bolted to the backing plate. RTV is a preferred way to seal diff covers by most mechanics. If you ahve a gasket and re-use it you can still add a lite coating for extra insurance.

voo doo 1 I am buggin out
6,355 Posts
even though it has 1500 badging .... the mega cab uses the 2500 frame and suspension (8 Lug)
so since it is esentially a 2500 in hiding re-use the gasket but I agree with slammed1 get some RTV for re-assurance but look to buy a new gasket for your next change

1,111 Posts
sherdep said:
but look to buy a new gasket for your next change
Lots of guys have been able to re-use the OEM gasket 4--5 times without any problems at all.


voo doo 1 I am buggin out
6,355 Posts
gsbrockman said:
Lots of guys have been able to re-use the OEM gasket 4--5 times without any problems at all.

that is good to know ... I dont have a gasket on mine and when I have used RTV on gaskets like valve covers they couldnt be resused but that could be cause we put more then just a little and the diffrence in heat where the valve covers would get alot hotter then the rear end.
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