Eaton ELocker4 Differential Dana 60 Performance 35 Spline 4.56 & Up Ratio
Deep gears and big tires go together, and once a Dana 60 is regeared to 4.56, 4.88 or 5.38 the next weak link is usually the open carrier. The Eaton ELocker4 14023-010 is the selectable locker for 35-spline Dana 60 axles in the 4.56-and-up carrier series. It fits front or rear, so owners of Ford Super Duty and older F-250/F-350 fronts, Dodge three-quarter and one-ton trucks, GM one-tons and rear-axle builds all end up shopping for this part number when they want a locker they can switch off for the drive home.
Switched off, the unit is an open differential and the truck drives exactly like stock. With the switch on, a 12 volt coil engages the locking collar and the two axle shafts turn together, so the tire with grip gets the torque instead of the one in the air. The ELocker4 uses four net-forged pinion gears for strength under heavy torque. Eaton lists a 9.75 inch ring gear, 35-spline 1.5 inch axle shafts and a unit weight of about 47 pounds. Deep-ratio ring gears are thinner than 4.10-and-lower gears, so the 4.56-up case positions the ring gear differently to keep it in mesh with the pinion, which is why ratio decides the carrier.
Dana 60s with deep gears also see ring gear damage from shock loads and worn carrier bearings, so inspect the ring and pinion when the cover comes off. The Dana 60 rear axle problems guide and our front axle guide list the common wear items.
Three checks decide whether 14023-010 is correct. First, the ratio must be 4.56 or numerically higher; 4.10 and lower axles use the ELocker4 14022-010 for 4.10 and down. Second, the gears must be standard thickness. Eaton states this unit is for non-thick ring gears only, and thick deep-ratio sets are built to mount on the 4.10-down carrier instead. Third, count the shaft splines; this case takes 35-spline shafts only. The Dana 60 ring and pinion buyers guide explains ratio, rotation and thickness in one place.
Eaton's application list for 14023-010 includes 1974-2012 Ford one-ton and 1979-2012 Ford three-quarter-ton front Dana 60s, 1971-1993 Dodge half-ton and 1976-2000 Dodge three-quarter and one-ton fronts, 1977-1987 GM one-ton fronts, 1973-1991 GM one-ton and 1975-1991 GM three-quarter-ton rears, 1966-1972 Chrysler, Dodge and Plymouth passenger car rears, and various performance rear Dana 60s. Every one of those still has to have 35-spline shafts and standard-thickness 4.56 or deeper gears, and many older trucks were factory 30-spline or have been regeared. Check the tag, ratio and splines, or send us the year and VIN. Browse more axle parts on our hard parts page.
| Brand | Eaton |
| Part number | 14023-010 |
| Fits | Eaton ELocker4 Differential Dana 60 Performance 35 Spline 4.56 & Up Ratio |
| Type | Differentials |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. It is a front or rear Dana 60 unit, and Eaton's own list includes GM one-ton and three-quarter-ton rear Dana 60s and 1966-1972 Mopar car rears.
No. Eaton notes this carrier is for non-thick ring gears only. Thick deep-ratio gears are made to bolt to the 4.10-and-down carrier, so use 14022-010 with those.
Eaton lists Ford three-quarter and one-ton front Dana 60s through 2012. The axle must have 35-spline inner shafts and standard-thickness gears of 4.56 or deeper, so confirm both before ordering.
The ELocker4 differential plus Eaton's locking rocker switch and wiring harness. Carrier bearings, shims and gear oil are separate.
Not always. Check the fuse, switch, ground and coil wiring first; Eaton sells service kits for the coil assembly, and our ELocker not engaging guide covers the checks.
