QU50277.5 One Selectro 8 Bolt Lock Out Hub for 1975-1991 Dodge Dana 60

QU50277.5 One Selectro 8 Bolt Lock Out Hub for 1975-1990.5 Dodge Dana 60 Front Axle is an original equipment replacement hub for 1975 to 1990.5 Dodge heavy duty 4x4s with the Dana 60 or Dana 61 front drive axles and 8 Bolt external mount wheel hubs. Axle shaft spline size is 1-5/16" x 30 spline. Kit includes one hub with hardware and gasket. Order QU40068 Axle Shaft Snap Ring and TK93042 Super Grade 8 Mounting Bolts separately. USA Made.

Also See QU50277 Set of 2 Hubs

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Original Factory Hub Cam 
Lubricate
Wheel Hub Type 
Wheel Hub Upgrade 
Dualmatic,  Selectro, and Powertrain 
Matching Parts
Applications

Tech Note 1: Original Factory Hub Cam 
The original Dualmatic and Selectro factory hubs were pretty tough for stock applications, but they do have a weak point with the original pot metal hub cam. If you just need a hub cam and gaskets, see QU50160 and QU50216.

Tech Note 2: Lubricate
Lubricating the moving parts on lockout hubs is critical for long life. When servicing your hub locks, use a THIN film of water proof grease like Pyroplex Plus on the moving metal parts. Do not pack the moving lockout parts with grease as this can cause engagement issues especially during cold weather. I like to liberally coat the axle shaft splines with grease for corrosion protection, but I only use a thin film of grease on the moving metal parts.

Tech Note 3: Wheel Hub Type
Two types of wheel hubs were used by Dodge for Dana 60 and Dana 61 front axles. 1975-1989 trucks used a wheel hub that took these QU50277 8 bolt, externally mounted lockout hubs. Later production trucks used an internally splined wheel hub and QU56011 Lockouts. There is conflicting documentation on the exact dates of the change over from external type hub mounting to internal, most likely due to the fact trucks were being manufactured in Canada, Mexico, and the United States at the same time and each plant probably made the switch when their inventory of axles with external type hubs was used up. For 1990 to 1991, Dodge lists both external and internal hubs. Dana lists only internal. We have seen a few 1990 models with external hubs, but most are internal. For 1991, most if not all, trucks should have internal hubs, but we did work on at least one 1991 dually with external hubs, so presumably there are more out there. All 1992 and 1993 trucks will have internal hubs.

Tech Note 4: Wheel Hub Upgrade for Higher Horsepower Applications
Tired of blowing lockout hubs or having the hub bolts loosen up? Or do you want to convert a 1975-1989 dually to singles? You can easily update your 1975-1989 era wheel hubs and lockouts to the 1990-1993 internally splined wheel hub and splined lockout hubs. While not cheap, it is simple because the spindles, axle shafts, brake calipers and brake caliper anchor plates are the same for all the 1975-1993 Dodge Dana 60 front axles. Our TK4996 Kit includes everything you need for the upgrade including the easier to install and totally reusable round spindle nut set. TK4996 includes:
(2) TKA4962 USA Made Torque King Splined Wheel Hubs with Timken Bearing Cups
(2) QU40119 OEM Dana Wheel Seals
(2) each Timken QU50398 Inner and QU50412 Outer Wheel Bearings
(16) QU50774 1/2" Wheel Bolts
(1) QU56011 Warn M256 Hub Set
(2) QU80005 Disc Brake Rotors
(2) QK4729 3 Piece Spindle Nut Sets
(1) QT1018i 4 Lug Spindle Nut Socket

Tech Note 5: Dualmatic,  Selectro, and Powertrain
Dualmatic was originally a Colorado based manufacturer who originally produced a lockout hub that was engaged by flipping 2 levers. In the mid 1970's, Dualmatic introduced a new, spring-lock hub design that featured a large, easy to turn control knob. Dualmatic produced hubs under the Dualmatic, Selectro, and Dana-Spicer Power Train brands. For a given application, the hubs were identical except for the name cast on the control knob face. Dualmatic would provide several hub models to original equipment manufacturers including Chrysler (1980-1990) and Rockwell, but in the 1990's, hub sales slowed and the hub manufacturing rights were sold by Dualmatic's parent company. Currently, several models of hubs are still available under the Selectro brand name. For identical applications, Selectro replacement parts and assemblies are totally interchangeable with large handle hubs branded Dualmatic, Selectro, or Power Train.

Tech Note 6: Matching Parts
Matching parts for QU50277.5 Dodge Dana 60, Dana 61 Single Hub-Lock:
XV101 Exploded View 1975-1989 Dodge Dana 60 Front Hub Related Parts and Tools
TK4037 Hub Service Kit
TK93042 Super Grade 8 Lockout Hub to Wheel Hub Bolt
QU40068 Axle Shaft Snap Ring
QK4730 Hex Spindle Nut Set 1975-1991.5 Dodge W250, W350
QU11069 Wheel Hub 
QU40330 30 Spline Outer Axle Shaft
QU50899 Replacement Dial O-Rings
Dodge & Ram Shop Manuals

Applications:
Dodge and Ram: 
W200 with Snow Plow Package: 1975, 1976, 1977, 1978, 1979, 1980
W250 with Snow Plow Package:1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, early 1990
W250 with Cummins Diesel Engine: 1989, early 1990
W300 with SRW: 1975, 1976, 1977, 1978, 1979, 1980
W350 with Dana 60 or Dana 61 Front Axle and SRW or DRW: 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, early 1990