ROCKWELL Built Axles

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ASTRO & SAFARI REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

7.5" Ring Gear

FAG, FAK ⁽¹⁾

3.08:1

FAS, FAT ⁽¹⁾

3.23:1

FAH, FAL ⁽¹⁾

3.42:1

FAM, FAN ⁽¹⁾

3.73:1

FAP, FAR ⁽¹⁾

4.10:1

⁽¹⁾	With positive traction, limited slip differential.

"C" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

KZJ, KZN, KZT, KZY ⁽¹⁾

2.73:1

KZK, KZU, LAC, LAJ, KZP ⁽¹⁾, KZZ ⁽¹⁾, LAF ⁽¹⁾, LAM ⁽¹⁾

3.08:1

KZL, KZW, LAD, LAK, KZR, LAA, LAG, LAN

3.42:1

KZM, KZX, KZS, LAB

3.73:1

9.5" Ring Gear

KGT, KGX, KHB ⁽¹⁾, KHF ⁽¹⁾

3.42:1

KGU, KGY, KHC ⁽¹⁾, KHG ⁽¹⁾

3.73:1

KGW, KGZ, KHD ⁽¹⁾, KHH ⁽¹⁾

4.10:1

KHA, KHJ ⁽¹⁾

4.56:1

10.5" Ring Gear

KJB

3.42:1

KJC, LHA

3.73:1

KJD, LHB

4.10:1

LHC

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"G" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PSR, PTA, PFT ⁽¹⁾, PSW ⁽¹⁾

3.08:1

PSS, PTB, PSX ⁽¹⁾, PTG ⁽¹⁾

3.42:1

PST, PTC, PSY ⁽¹⁾, PTH ⁽¹⁾

3.73:1

9.5" Ring Gear

HBG, KCT ⁽¹⁾

3.23:1

HBB, KCR ⁽¹⁾

3.73:1

HBD, KCS ⁽¹⁾

4.10:1

PBJ, KCU ⁽¹⁾

4.56:1

9.75" Ring Gear (DANA)

BJH, GWG

4.10:1

BKH, GWF

4.56:1

10.5" Ring Gear (DANA)

HNA

3.42:1

HNB, HNH

3.73:1

BJJ, HNC, HNJ

4.10:1

BKJ

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"K" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

LAP, LAU, LBB, LGB, LAS ⁽¹⁾, LAY ⁽¹⁾, LBD ⁽¹⁾, LBJ ⁽¹⁾

3.42:1

LAR. LAW, LBC, LBH, LAT ⁽¹⁾, LAZ ⁽¹⁾, LBF ⁽¹⁾, LBK ⁽¹⁾

3.73:1

LAX, LAB ⁽¹⁾

4.10:1

9.5" Ring Gear

KHK, KHN, KHT ⁽¹⁾, KHX ⁽¹⁾

3.42:1

KHL, KHP, KHU ⁽¹⁾, KHY ⁽¹⁾

3.73:1

KHM, KHR, KHW ⁽¹⁾, KHZ ⁽¹⁾

4.10:1

KHS, KJA ⁽¹⁾

4.56:1

10.5" Ring Gear

KJF

3.42:1

KJG

3.73:1

KJH

4.10:1

⁽¹⁾	With positive traction, limited slip differential.

"K" SERIES FRONT AXLE RATIO IDENTIFICATION

Code	Ratio
ZBK, ZGS, ZHW	3.42:1
ZBL, ZGT, ZHX	3.73:1
ZBM, ZGU, ZHY	4.10:1
ZHZ	4.56:1

"P" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

9.5" Ring Gear

GUC, GUL, KCX ⁽¹⁾, KDA ⁽¹⁾

3.73:1

GUD, GUM

4.10:1

10.5" Ring Gear

HJN, HJU, HJS ⁽¹⁾, HJY ⁽¹⁾, KSS ⁽¹⁾

3.73:1

HJP, HJW, HKH

4.10:1

HJR, HJX, HKJ, HJT ⁽¹⁾, HJZ ⁽¹⁾, HKL ⁽¹⁾

4.56:1

HKK

5.13:1

10.5" Ring Gear (DANA)

LBL, PBP

4.56:1

PZU

4.63:1

LBM, PBR

4.88:1

LBN

5.13:1

10.5" Ring Gear (ROCKWELL)

PJS

5.13:1

⁽¹⁾	With positive traction, limited slip differential.

"R" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PAL, PAR ⁽¹⁾

2.73:1

PAM, PAS ⁽¹⁾

3.08:1

PAN, PAT ⁽¹⁾

3.42:1

PAP, PAU ⁽¹⁾

3.73:1

9.5" Ring Gear

GUK, KCZ ⁽¹⁾

3.42:1

GUL, KDA ⁽¹⁾

3.73:1

GUM, KDB ⁽¹⁾

4.10:1

GUN, KDC

4.56:1

10.5" Ring Gear

KBW, KBY, KMW, KBX ⁽¹⁾, KBZ ⁽¹⁾, KMX ⁽¹⁾

3.42:1

HKP, HBW, GDP, HFP, HFY, HKS ⁽¹⁾, HBZ ⁽¹⁾, HFT ⁽¹⁾, HHL ⁽¹⁾

3.73:1

GDR, HFR, HFZ, HKR, HBX, HFL ⁽¹⁾, HKT ⁽¹⁾, HFU ⁽¹⁾, HHM ⁽¹⁾

4.10:1

HBY, GDS, HFS, HDZ, HFM ⁽¹⁾, HFW ⁽¹⁾, HHN ⁽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, PML ⁽¹⁾

3.42:1

GAK, HKB, HZP ⁽¹⁾

3.73:1

HKC, GAL, HZR ⁽¹⁾, HZU ⁽¹⁾

4.11:1

7.625" Ring Gear

KUK, KUN

3.08:1

PMM, KUR ⁽¹⁾, KUS ⁽¹⁾

3.42:1

⁽¹⁾	With positive traction, limited slip differential.

"T" SERIES FRONT AXLE RATIO IDENTIFICATION

Code	Ratio
ZAH	3.08:1
ZAD	3.42:1
ZAL	3.73:1
ZAM	4.11:1

"V" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

PAW, PZX ⁽¹⁾

2.73:1

PAY, PBH, PBB ⁽¹⁾, PBL ⁽¹⁾

3.08:1

PAZ, PBT, PBC ⁽¹⁾, PBM ⁽¹⁾

3.42:1

PBA, PBK, PBD ⁽¹⁾, PBN ⁽¹⁾

3.73:1

9.5" Ring Gear

GZF, KDH ⁽¹⁾

3.42:1

GZG, KDJ ⁽¹⁾

3.73:1

GZH, KDK ⁽¹⁾

4.10:1

10.5" Ring Gear

GDP, HHP, HHX, HKU, HHT ⁽¹⁾, HJK ⁽¹⁾, HKW ⁽¹⁾

3.73:1

GDR, HHR, HHY HHU ⁽¹⁾, HJL ⁽¹⁾

4.10:1

GDS, HHS, HHZ, HKX HHW ⁽¹⁾, HJM ⁽¹⁾, HKY ⁽¹⁾

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"V" SERIES FRONT AXLE RATIO IDENTIFICATION

Code

Ratio

ZGA, ZGB

2.73:1

ZGC, ZGD

3.08:1

ZGH, ZGJ, ZGF, ZGG

3.42:1

ZGM, ZGN, ZGK, ZGL, ZFR ⁽¹⁾, ZFS ⁽¹⁾

3.73:1

ZGP, ZGR, ZFT ⁽¹⁾, ZFU ⁽¹⁾

4.10:1

ZFW ⁽¹⁾, ZFX ⁽¹⁾

4.56:1

⁽¹⁾	DANA built front axle.