QU20339 Manual Hublock for 1999-2004 Ford NV271F Transfer Cases

QU20339 Manual Hublock for trucks with NV271F Manual Shift Transfer Cases in Ford Excursion and 1999-2004 Super Duty F250, F350, F450, and F550 trucks (1999-2004) Both manual and auto (vacuum) types can be manually engaged by twisting the dial.

Also See: QU20339U Used Manual Hublock for trucks with NV271F Manual Shift Transfer Case (while supplies last). Snap Rings are not included.

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:
Failed Hublocks
Outer Axle Shafts
Tapered Design
Matching Installation Parts
Related Parts
Applications

Tech Note 1: Failed Hublocks
On Ford Dana 50 and 1999-2004 Dana 60 monobeam front axles the hublock helps support the axle shafts. If your axle u-joints freeze up or the axle shaft support needle bearing pressed in the wheel hub fails, there is a good chance the hublock will get wrecked. If your hublocks failed ALWAYS check the axle u-joint, axle shaft support bearing, and ball joints to find the CAUSE of the failure.

Tech Note 2: Outer Axle Shafts
Outer Axle Shafts (QU40318) are one of the most common parts needing to be replaced on these vehicles due to damage caused by water infiltration wrecking the Axle Shaft Support Bearing (QU40143). A worn out or improperly installed Outer Axle Shaft to Knuckle Seal (see QU40233, QU20035, and QT1515) will allow water to contaminate the Axle Support Bearing grease. Once that happens, your Axle Shaft Support Bearing (QU40143) and your Outer Axle Shaft will grind against each other any time the hubs are in the free position. By the time you hear or feel something wrong the damage is done. Check the hublocks, vacuum hose (auto hubs) or Knuckle Fitting Cap (manual hubs) for damage.

Tech Note 3: Tapered Design
The tapered design of Ford factory type Hublocks allows them to be used on trucks with either single or dual rear wheels. Aftermarket hubs like our QU56011 Warn Hubs can only be used on trucks with single rear wheels. Aftermarket hubs will not fit inside the front wheel extension adapter found on dually trucks.

Tech Note 4: Matching Installation Parts
Matching Installation Parts for Ford Hublocks:
QU20044 Hublock to Wheel Hub O-Ring (Not included with USED Hub)
QU20043 Hub-Lock to Wheel Hub Snap Ring (Not included with USED Hub)

Tech Note 5: Related Parts
Related Parts for Ford Hublocks:
QU40155 Axle Shaft Snap Ring (Not included with USED Hub)
QU40385 3 Piece Outer Axle Shaft Thrust Washer Set
QU40318 Outer Axle Shaft
QU40242 Inner Thrust Washer for Outer Axle Shaft
QU40143 Outer Axle Shaft Support Bearing

Applications:
Ford with and NV271F Manual Shift Transfer Case:
F250, F350, F450, F550: 1999, 2000, 2001, 2002, 2003, 2004