Spicer Dana 60 Lower Kingpin Partial Rebuild Kit – Single Side
706395X
The Spicer Dana 60 Lower Kingpin Partial Rebuild Kit is engineered to service and restore the lower knuckle assembly on kingpin-style Dana 60 front axles. Built from genuine Spicer OE-grade drivetrain components, this kit replaces worn lower bearings, races, and seals that degrade over time from heavy steering loads, trail shock, and environmental contamination. Whether you are performing routine maintenance or correcting steering wander on a heavy-duty tow rig or dedicated rock crawler, this kit provides the reliable foundation needed for precise steering control.
The lower kingpin assembly supports the majority of the vehicle's vertical weight and absorbs intense lateral loads when turning oversized off-road tires. Worn lower bearings and compromised seals introduce knuckle play, death wobble, and abrasive grit that can quickly destroy your front end. Rebuilding with genuine Spicer components restores proper kingpin bearing preload, eliminates steering looseness, and seals out mud, sand, and water on the trail.
Includes:
- (1) Lower Kingpin Cap
- (1) Lower Kingpin Bearing and Race
- (1) Lower Kingpin Seal
- (1) Upper Kingpin Seal
Note: This kit services one lower knuckle assembly and is sold per side. Order two kits to service an entire front axle.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Spicer (Genuine OE Drivetrain) |
| Axle Compatibility | Kingpin-Style Dana 60 Front Axle |
| Application Type | Lower Knuckle Assembly Rebuild |
| Included Bearing Type | Tapered Roller Bearing & Matched Race |
| Sealing Components | (1) Upper Kingpin Seal & (1) Lower Kingpin Seal |
| Application Grade | Heavy-Duty Street, Towing & Off-Road Competition |
| Sold As | Single Side (Services One Knuckle) |
Fitment
Designed for factory and custom-built kingpin-style Dana 60 front steering axles.
| Make | Model | Year Range | Axle Application |
|---|---|---|---|
| Chevrolet | K30 / V30 Pickup & Truck | 1977–1988 | Dana 60 Front Kingpin Axle |
| GMC | K35 / K3500 / V3500 Truck | 1977–1987 | Dana 60 Front Kingpin Axle |
| Dodge | W200 / W250 / W300 / W350 | 1975–1993 | Dana 60 Front Kingpin Axle |
| Ford | F-250 / F-350 Super Duty | 1978–1991 | Dana 60 Front Kingpin Axle |
| Custom Build | Rock Crawlers, Buggies & Trail Rigs | Custom | Dana 60 Front Kingpin Axle |
Fitment Notes
- Fits open-knuckle, kingpin-style Dana 60 front axles only. Will not fit later-model ball-joint Dana 60 front axles.
- Designed specifically for servicing the lower knuckle bearing, race, cap, and seals.
- Always inspect your upper kingpin bushing, spring, and kingpin shaft for wear when rebuilding the lower assembly.
- Sold per side—order two kits to rebuild both driver and passenger side lower knuckles.
FAQ
1. Why is the lower kingpin bearing so prone to wear on Dana 60 axles?
On a kingpin Dana 60 front axle, the lower tapered roller bearing supports almost the entire vertical weight of the vehicle and takes the direct brunt of road impacts, trail obstacles, and tire side-loading. Over time, heavy tires and hard off-road use compress and wear this bearing, leading to looseness in the steering knuckle.
2. What is the difference between a "Partial" and a full kingpin rebuild kit?
This partial rebuild kit focuses specifically on the lower knuckle assembly—providing a fresh lower bearing, race, cap, lower seal, and upper seal. A full master kingpin rebuild kit also includes the upper nylon/conical kingpin bushing, upper tension spring, spring retainer, and sometimes the physical upper kingpin shaft itself.
3. How do I know if my Dana 60 lower kingpin bearings need to be replaced?
Common symptoms of worn lower kingpin bearings include front-end "death wobble," erratic steering wander, clunking noises when turning over bumps, or visible vertical play between the steering knuckle and the inner C when lifting the tire off the ground.
4. How many kits do I need to order for a complete front axle service?
Each kit contains the components required to service one side (one steering knuckle) of your Dana 60 front axle. To rebuild both the driver-side and passenger-side lower knuckle assemblies, you will need to order a quantity of two kits.
5. Why is it important to replace the upper and lower seals during a bearing service?
Water, mud, sand, and road grime are the primary causes of premature tapered roller bearing failure. The included Spicer upper and lower seals lock grease inside the knuckle assembly while forming a tight barrier against trail contamination and moisture ingress during water crossings.
