Spline Count?

How can i find out what spline my front D30 is, looking at ox lockers and its either Dana 30 3.73 and up, 27 spline or Dana 30 3.73 and up, 30 spline

Take the axle shaft out mark one spline with a marker and start counting till you come back to the marker. I have heard of people sending in there vin numbers to the manufacturer or dealer and they will give you a complete build of the Jeep with all that detail and what not. But I think that what I mentioned up above is the only way to really know and be certain.

On TJ’s, XJ’s, and ZJ’s the D30’s came with 27 spline. The 30 spline was used by some aftermarket alloys. I would assume its the same for JK’s. Calling Tex . . . .

I did email Jeep and got this build sheet, i don’t see anything about spline count tho. Just gear ratio

Dear Matthew:

Thank you for contacting the Jeep Customer Assistance Center.

We are pleased to provide vehicle build information per your request for
your 2007 Jeep Wrangler.

According to our records, your vehicle was equipped from the factory
with the following:

VIN: 1J4FA24187L103319
Model Year: 2007
Body Model: JK J L 72

Sales Code Description
A7 Cloth Low-Back Bucket Seats
-DD Dk Slate Gray/Med Slate Gray
AEM Dual Top Group
AJP Power Convenience Group
APAS Monotone Paint
AWS Smoker’s Group
BABS 160 Amp Alternator
BC2S 600 Amp Maintenance Free Battery
BNBS Electronic Stability Control
BNMP Traction Control
BNSP Electronic Roll Mitigation
BPTP Hydraulic Assist Brake Booster
BRWS 4-Wheel Disc Brakes
CACS Low Back Bucket Seats
CAGS Easy Access Passenger Seat
CDBS Reclining Front Seats
CDHP Driver Height Adjuster Seat
CFMS Rear Folding Seat
CGWS Next Generation Front Air Bags
CGXS RR Head Restraints Outboard Seating
CJ1 Supplemental Frt Seat Side Air Bags
CKES Front Seat Area Carpet
CKFP Rear Seat/Wheelhouse/Cargo Carpet
CKTS Cargo Tie Down Loops
CLMS Sport Bar w/Full Padding
CSA Spare Tire Cover
CUFP Full Length Floor Console
CUKP Removable Ash Tray
CURS Rear Compartment Storage Tray
DBBC All Manual Transmissions
DEH 6-Speed Manual NSG370 Transmission
DHES Man Shift-on-the-Fly Transfer Case
DJRS Next Gen. Dana 30 Solid Front Axle
DMF 4.10 Rear Axle Ratio
DRZS Next Gen. Dana 44 HD Rear Axle
DS7S Conventional Differential Frt Axle
DS8S Conventional Differential Rear Axle
EGT 3.8L V6 SMPI Engine
GBBS Tinted Windshield Glass
GCBS Front Door Tinted Glass
GCFS Full Metal Doors w/Roll-up Windows
GEDP Tinted Rr Drs/Qtr/Liftgate Glass
GFAP Rear Window Defroster
GNAS Rear View Day/Night Mirror
GNDS Driver Side Sun Visor
GNYS Passenger Side Sun Visor
GTVS Swing-Away Mirrors
GXMP Remote Keyless Entry
GXXS Sentry Key Theft Deterrent System
HAAP Air Conditioning
JAYS Instrument Cluster w/Tach
JCDS 100 MPH Primary Speedometer
JFJP Temperature & Compass Gauge
JHAS Var Intermittent Windshield Wipers
JHBP Rear Window Wiper/Washer
JJAP Cigar Lighter
JJFS Single Low Note Horn
JJJS 12V Auxiliary Power Outlet
JKAS Locking Glove Box
JPBP Power Locks
JPYP Pwr Windows, Front 1-Touch Down
LBBP Courtesy Lamps
LDAP Underhood Lamp
LMAS Halogen Headlamps
LNJP Fog Lamps
LSAP Security Alarm
MBAS Painted Front Bumper
MB5S Black Rear Bumper
MFRS Black Front Frame Overlay
MFTS Body Color Grille
MRK Tubular Side Steps
MT2S Trail Rated Badge
MVCS Jeep Badge
NAE California Emissions
NF2S 18.5 Gallon Fuel Tank
NHMP Speed Control
PDAA Light Graystone Pearl Coat
QDAS Light Graystone Pearl Coat
RC9 6 Premium Speakers w/Subwoofer
RDDS Fixed Long Mast Antenna
REQ Media Center 230 6CD/DVD/MP3
SBAS Power Rack and Pinion Steering
SCLP Leather Wrapped Steering Wheel
SDUS Heavy Duty Suspension w/Gas Shocks
SHAS Front Stabilizer Bar
SHCS Front and Rear Stabilizer Bars
SUAS Tilt Steering Column
TBBS Full Size Spare Tire
TBRS Outside Tire Carrier
TYXP P245/75R16 BSW On/Off Road Tires
TZAP Goodyear Brand Tires
VJXP Black Easy Folding Soft Top
VKXA Black Hard Top
WKBP Matching Spare Wheel
WLZC All Aluminum Wheels
WNJP 16X7.0 Aluminum Wheels
XCAS Occupant Classification System
XEES Fuel Tank Skid Plate Shield
XEFS Transfer Case Skid Plate Shield
XEWP 2 Front & 1 Rear Tow Hooks
XJFS Tethered Fuel Filler Cap
XJGS Non Locking Fuel Filler Cap
XPFS Protective Coating and Remover
X81S Instrument Panel Parts Module
X83S Front End Parts Module
X86S Complete Chassis Parts Module
X88S Tire & Wheel Parts Module
X92S Complete Body in White Parts Module
X94S Complete Painted Body Module
YAAS Build To U.S. Mkt. Specifications

Thanks again for your email.



Customer Service Representative
Jeep Customer Assistance Center

“DS7S Conventional Differential Frt Axle”

I’m going to assume this would mean that you just have the standard 27 spline front axle.

Cool thanks, i talked to Steve too, he said 27 spline

from JK forum

Thanks Derick