American-made CORE 44 housings accept the latest generation Dana 44 gear design, with a larger diameter ring gear and bigger pinion shaft to withstand hard off-road use. Our housings feature forged bearing caps and a unique G-lock adjuster nut system to set backlash and carrier bearing preload. CORE 44 axles use additional ribbing on the cast center section and 3-inch diameter, 5/16-wall DOM axle tubes with forged inner Cs for use with tall, aggressive tires. The CORE 44 is a direct replacement for the Dana 30 under the front of your leaf sprung 87-95 YJ Wrangler or coil sprung 97-06 TJ Wrangler. All brackets are designed around stock mounting points, and are laser cut and CNC formed from 3/8-inch steel for added strength. We have also gusseted and reinforced any weak points to prevent damage to the brackets and finish the housing in a UV-stable black powdercoat. The CORE 44 comes fully assembled with your choice of gear ratio and locker. Gear ratios vary from 4.10 to 5.38 and locker choices include ARB Air Locker, Eaton E-Locker, G2 selectable locker, and Auburn ECTED.
| RATIO | w/ Core Locker | w/ AUBURN ECTED MAX locker | w/ ARB locker |
|---|---|---|---|
| 4.56 | C4J MFS 456 CP5 | C4J MFS 456 MP5 | C4J MFS 456 AP5 |
| 4.88 | C4J MFS 488 CP5 | C4J MFS 488 MP5 | C4J MFS 488 AP5 |
| 5.13 | C4J MFS 513 CP5 | C4J MFS 513 MP5 | C4J MFS 513 AP5 |
| 5.38 | C4J MFS 538 CP5 | C4J MFS 538 MP5 | C4J MFS 538 AP5 |
| RATIO | AUBURN ECTED MAX LOCKER | ARB AIR LOCKER | DETOIT LOCKER | EATON E-LOCKER | TrueTrac LOCKER |
|---|---|---|---|---|---|
| 4.56 | C4J SR 456 MP0 | C4J SR 456 APO | C4J SR 456 DPO | C4J SR 456 EPO | C4J SR 456 TPO |
| 4.88 | C4J SR 488 MP0 | C4J SR 488 APO | C4J SR 488 DPO | C4J SR 488 EPO | C4J SR 488 TPO |
| 5.13 | C4J SR 513 MP0 | C4J SR 513 APO | C4J SR 513 DPO | C4J SR 513 EPO | C4J SR 513 TPO |
| 5.38 | C4J SR 538 MP0 | C4J SR 538 APO | C4J SR 538 DPO | C4J SR 538 EPO | C4J SR 538 TPO |
| Part number | Description |
|---|---|
| 67-2051JKF | Metric Housing Stock Caster 0"-4" Lift |
| 67-2051JKFL | Metric Housing Added Caster 4"-Up Lift |
| RATIO | w/ Core LOCKER | w/AUBURN ECTED MAX locker | w/ ARB LOCKER |
|---|---|---|---|
| 4.56 | C4J MR 456 CP5 | C4J MR 456 MP5 | C4J MR 456 AP5 |
| 4.88 | C4J MR 488 CP5 | C4J MR 488 MP5 | C4J MR 488 AP5 |
| 5.13 | C4J MR 513 CP5 | C4J MR 513 MP5 | C4J MR 513 AP5 |
| 5.38 | C4J MR 538 CP5 | C4J MR 538 MP5 | C4J MR 538 AP5 |
| RATIO | w/ Core LOCKER | w/ AUBURN ECTED MAX locker | w/ ARB locker | w/ Detroit locker | w/ eaton E-locker | w/ True Trac locker |
|---|---|---|---|---|---|---|
| 4.56 | C4J SR 456 CPO | C4J SR 456 MP0 | C4J SR 456 APO | C4J SR 456 DPO | C4J SR 456 EPO | C4J SR 456 TPO |
| 4.88 | C4J SR 488 CPO | C4J SR 488 MP0 | C4J SR 488 APO | C4J SR 488 DPO | C4J SR 488 EPO | C4J SR 488 TPO |
| 5.13 | C4J SR 513 CPO | C4J SR 513 MP0 | C4J SR 513 APO | C4J SR 513 DPO | C4J SR 513 EPO | C4J SR 513 TPO |
| 5.38 | C4J SR 538 CPO | C4J SR 538 MP0 | C4J SR 538 APO | C4J SR 538 DPO | C4J SR 538 EPO | C4J SR 538 TPO |
| Part number | Description |
|---|---|
| 67-2052JKR | Metric Housing Rear |
| 67-2052JKRS | Sae Housing Rear |
