Ships from Kansas City, MO · USPS, UPS & FedEx with tracking813-260-8356
MXL Parts logoMXL PARTS

Shop by category

Electrical 331Hydraulics 243Suspension & steering 223Drivetrain 215Hardware 211Cooling & fuel 169Bearings & hubs 135Filters 129Gaskets & seals 111Brakes 110Engine 104Body & interior 99Belts & pulleys 73Wheels & tires 17More parts 256
Shop by machine
Cars & light trucks 899Industrial 637Semi & heavy truck 231Powersports 146Farm & ag 133Construction 129Lawn & garden 90Marine 77
Genuine Eaton Fuller K-4122 Locknut Flange Nut USA Made photo 1Genuine Eaton Fuller K-4122 Locknut Flange Nut USA Made photo 2Genuine Eaton Fuller K-4122 Locknut Flange Nut USA Made photo 3Genuine Eaton Fuller K-4122 Locknut Flange Nut USA Made photo 4
1 / 4
Eaton

Genuine Eaton Fuller K-4122 Locknut Flange Nut USA Made

ConditionNew – Open box

Part numberK-4122also K4122

In stock
$34.19

Shipping $2.99 · ships from Kansas City, MO

1

Finish the job

Often needed with it
HLH Wheel Plate Bracket Mount XE-105-D Holland 5th Wheels
HLH Wheel Plate Bracket Mount XE-105-D Holland 5th Wheels$246.99
Bobcat OEM Gas Spring for Excavators – Part 7400273
Bobcat OEM Gas Spring for Excavators – Part 7400273$28.49
Classic Front Axle Wheel Seal MER0236 SKF 35066 Stemco 383-0136
Classic Front Axle Wheel Seal MER0236 SKF 35066 Stemco 383-0136$21.84
This part + 3 more$331.51

Ships from Kansas City, MOUSPS, UPS or FedEx. Tracking sent by email.

30-day return windowIf it arrives defective, damaged or not as listed.

Not sure it fits?Call or text 813-260-8356 with your VIN or old part number.

Direct priceYou buy from us, with no marketplace fees in the middle.

Specifications
BrandEaton
Part numberK-4122
ConditionOpen box
CategoryHardware
MachineSemi & heavy truck
ModelEaton Fuller K-4122
Item #960038495553
About this part

Genuine Eaton Fuller K-4122 Locknut / Flange Nut. * Brand: Eaton Fuller * Part Number: K-4122 / K4122 * Type: Transmission Output Shaft Locknut / Flange Nut * Country of Origin: USA Compatible/reference numbers include 4302321 and 4306520. 1-4

The Eaton Fuller K-4122 is a transmission output shaft locknut, also called a flange nut. It holds the output yoke or companion flange on the shaft. It is commonly replaced whenever the yoke comes off, since a used locknut may not hold as well, or when its threads are damaged. It is made in the USA.

Before you order: compare K-4122 with your transmission's parts list. Reference numbers include 4302321 and 4306520.

New, open box, never installed. Ships from Kansas City, MO with tracking.

Shipping & returns

Orders ship from Kansas City, MO with USPS, UPS or FedEx. Shipping on this part is $2.99, shown before you pay. You get the tracking number by email as soon as it ships.

We accept returns for items that arrive defective, damaged or incorrect. Contact us within 30 days of delivery at shopmxlparts@gmail.com with your order number and photos. Full return policy

More Eaton parts

All Eaton

More in hardware

See all