ROCKWELL Built Axles

Identification code is stamped on carrier assembly.

ASTRO & SAFARI REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

7.625" Ring Gear

SGF, SGS, SGG ⁽¹⁾, SGT ⁽¹⁾

3.23:1

SGH, SGU, SGJ ⁽¹⁾, SGW ⁽¹⁾

3.42:1

SGK, SGX, SGL ⁽¹⁾, SGY ⁽¹⁾

3.73:1

SGM, SHL, SGN ⁽¹⁾, SHM ⁽¹⁾

4.10:1

⁽¹⁾	With positive traction, limited slip differential.

"C" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PDB, PDL, PDU, PFA, PDG ⁽¹⁾, PDR ⁽¹⁾, PDX ⁽¹⁾, PFD ⁽¹⁾

3.08:1

PDC, PDM, PDW, PFB, PDH ⁽¹⁾, PDS ⁽¹⁾, PDU ⁽¹⁾, PFF ⁽¹⁾

3.42:1

PDD, PDN, PDJ ⁽¹⁾, PDT ⁽¹⁾

3.73:1

9.5" Ring Gear

PGJ, PGY, PSM ⁽¹⁾, PHC ⁽¹⁾

3.42:1

PGK, PGZ, PGH ⁽¹⁾, PHD ⁽¹⁾

3.73:1

PGL, PHA, RNN, PGP ⁽¹⁾, PHF ⁽¹⁾

4.10:1

PHB, PHG ⁽¹⁾

4.56:1

10.5" Ring Gear

TFA, TFD ⁽¹⁾

3.42:1

RWY, RXF, RXM, SKG, TFB, RXB ⁽¹⁾, RXT ⁽¹⁾, RXR ⁽¹⁾, TFF ⁽¹⁾

3.73:1

RWZ, RXG, RXN, SKH, TFC, RXC ⁽¹⁾, RXK ⁽¹⁾, RXS ⁽¹⁾, SKL ⁽¹⁾, TFG ⁽¹⁾

4.10:1

RXA, RXH, RXP, RXD ⁽¹⁾, RXL ⁽¹⁾, RXT ⁽¹⁾

4.56:1

10.5" Ring Gear (ROCKWELL)

TFW

4.56:1

TFX

5.13:1

⁽¹⁾	With positive traction, limited slip differential.

"G" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PNK, PNL ⁽¹⁾

3.08:1

PNM, PNN ⁽¹⁾

3.42:1

PNP, PNR ⁽¹⁾

3.73:1

9.5" Ring Gear

HBG, KCT ⁽¹⁾

3.23:1

PYR, RAP, PYN ⁽¹⁾, RAR ⁽¹⁾

3.73:1

PYS, RBS, PYP ⁽¹⁾, RBT ⁽¹⁾

4.10:1

HBJ, KCU ⁽¹⁾

4.56:1

9.75" Ring Gear (DANA)

SJJ, SJK

4.10:1

SJG, SJH

4.56:1

10.5" Ring Gear

RGU

3.42:1

RGW

3.73:1

10.5" Ring Gear (DANA)

RGG

3.42:1

RGH, SKP

3.73:1

RGJ, SKM, SKR

4.10:1

SKN

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"K" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PFG, PFL, PFT, PFY, PFJ ⁽¹⁾, PFP ⁽¹⁾, PRW ⁽¹⁾

3.42:1

PFH, PFM, PFU, PFZ, PFK ⁽¹⁾, PFR ⁽¹⁾, PFX ⁽¹⁾, PGA ⁽¹⁾, PGB ⁽¹⁾

3.73:1

PFN, PSF ⁽¹⁾

4.10:1

9.5" Ring Gear

PHS, PJG, PHW ⁽¹⁾, PJL ⁽¹⁾

3.42:1

PHT, PJH, PHX ⁽¹⁾, PJM ⁽¹⁾

3.73:1

PHU, PJJ, PHY ⁽¹⁾, PJN ⁽¹⁾

4.10:1

PJK, PJP ⁽¹⁾

4.56:1

10.5" Ring Gear

TFH, TFL ⁽¹⁾

3.42:1

RWY, RXF, RXM, SKG, TFJ

3.73:1

RWZ, RXG, RXN, SKH, TFK, RXB ⁽¹⁾, RXJ ⁽¹⁾, RXR ⁽¹⁾, TFM ⁽¹⁾

4.10:1

RXA, RXH, RXP, RXD ⁽¹⁾, RXL ⁽¹⁾, RXT ⁽¹⁾, RXC ⁽¹⁾, RXK ⁽¹⁾, RXS ⁽¹⁾, SKL ⁽¹⁾, TFN ⁽¹⁾

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"K" SERIES FRONT AXLE RATIO IDENTIFICATION

Code	Ratio
ZBK, ZCP, ZGS, ZHW	3.42:1
ZBL, ZCR, ZGT, ZGX, ZHX	3.73:1
ZBM, ZCS, ZGU, ZHY	4.10:1
ZHZ, ZGZ	4.56:1

"P" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

10.5" Ring Gear

HJN, PXR, RPP, HJS ⁽¹⁾, PXU ⁽¹⁾

3.73:1

HJP, PXS, RPR

4.10:1

HJR, PXT, PXW, RPS,

SWT, SWX, RPU ⁽¹⁾, HJT ⁽¹⁾

4.56:1

SWU, SWY

4.88:1

PLX, RPT

5.13:1

10.5" Ring Gear (ROCKWELL)

RLL

5.13:1

⁽¹⁾	With positive traction, limited slip differential.

"R" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PNT, PNY ⁽¹⁾

3.08:1

PNU, PNZ ⁽¹⁾

3.42:1

PNW, PPA ⁽¹⁾

3.73:1

9.5" Ring Gear

KBW, KBX ⁽¹⁾

3.42:1

RAA, RAB ⁽¹⁾

3.73:1

RBW, RCK ⁽¹⁾

4.10:1

GUN

4.56:1

10.5" Ring Gear

KMV, KMX ⁽¹⁾

3.42:1

GDP, HFP, HFY, HKP,

HKS ⁽¹⁾, HFT ⁽¹⁾, HHL ⁽¹⁾

3.73:1

GDR, HFR, HFZ,

HKT ⁽¹⁾, HFU ⁽¹⁾, HHM ⁽¹⁾

4.10:1

GDS, HFS, HFW ⁽¹⁾, HHN ⁽¹⁾, KDC ⁽¹⁾

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"S" & "T" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

7.5" Ring Gear

GAJ

3.42:1

GAK, HZP ⁽¹⁾

3.73:1

GAL, HZR ⁽¹⁾

4.11:1

7.625" Ring Gear

RNB

2.73:1

KUK, KUN, RNC, RND ⁽¹⁾, RNH, RPW, RPZ, RRA, RRC, RRD, RRG, RRH

3.08:1

PLM ⁽¹⁾, PMM, KUR, KUS ⁽¹⁾, RNE, RNG RNJ, RNK ⁽¹⁾, RPY ⁽¹⁾, RRB ⁽¹⁾, RRF ⁽¹⁾, RRJ ⁽¹⁾, RPXX

3.42:1

⁽¹⁾	With positive traction, limited slip differential.

"T" SERIES FRONT AXLE RATIO IDENTIFICATION

Code	Ratio
ZAH	3.08:1
SKY, ZAD, ZAK, ZXC, ZYD	3.42:1

"V" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PPB, PPJ, PPF ⁽¹⁾, PPM ⁽¹⁾

3.08:1

PPC, PPK, PPG ⁽¹⁾, PPN ⁽¹⁾

3.42:1

PPD, PPH ⁽¹⁾

3.73:1

9.5" Ring Gear

RAC, RAD ⁽¹⁾

3.73:1

RBY, RCL ⁽¹⁾

4.10:1

10.5" Ring Gear

GDP, HHP, HHX, HHT ⁽¹⁾, HJK ⁽¹⁾

3.73:1

GDR, HHR, HHY, HHU ⁽¹⁾, HJL ⁽¹⁾

4.10:1

GDS, HHS, HHZ, HHW ⁽¹⁾, HJM ⁽¹⁾

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"V" SERIES FRONT AXLE RATIO IDENTIFICATION

Code

Ratio

ZDC, ZDP, ZGC, ZHC, ZHD, ZGD

3.08:1

ZDK, ZDU, ZGH, ZHH, ZMH

3.42:1

ZDX, ZDZ, ZFB, ZFD, ZFF, ZFM, ZGK, ZGM, ZGN, ZHK, ZHN, ZFR ⁽¹⁾, ZFS ⁽¹⁾,

3.73:1

ZFP, ZFN, ZFT ⁽¹⁾, ZFU ⁽¹⁾, ZGP, ZGR, ZHP, ZHR

4.10:1

ZFW ⁽¹⁾, ZFX ⁽¹⁾

4.56:1

⁽¹⁾	DANA built front axle.