Description
The ATRO Steerking SKS12005 is a no-ream king pin kit that drops in as a direct replacement for Stemco K120E, fitting Eaton/Spicer/Dana EFA12F4 (12,000 lb) and EFA13F5 (13,000 lb) front steer axles. Spiral-design king pins with composite bushings, thrust bearings, and a full seal kit — everything required to rebuild both ends of one axle in a single kit.
Signs You Need a New King Pin Kit
- Wandering or vague steering, especially at highway speeds
- Excessive play in the steering wheel that doesn’t track to the gear or linkage
- Visible looseness or rocking at the steering knuckle when the front wheel is jacked up
- Knocking or clunking from the front axle over bumps
- Uneven tire wear concentrated on the inside or outside shoulder
Specifications
| Manufacturer | ATRO Steerking |
|---|---|
| Part Number | SKS12005 |
| Part Type | No-Ream Spiral King Pin Kit |
| Axle Compatibility | Eaton/Spicer/Dana EFA12F4 (12,000 lb), EFA13F5 (13,000 lb) |
| King Pin Length | 9.19″ |
| King Pin Outer Diameter | 1.625″ |
| Bushing Style | Composite spiral |
| Warranty | 3 years |
Kit Includes
- King Pin — KP120E (qty 2)
- Composite Bushing — SS120E (qty 4)
- End Cap — 120E (qty 4)
- Thrust Bearing — BRT1910-4 (qty 2)
- Seal Kit — SL120E-CON (qty 1)
- Lock Pin — LP120E (qty 2)
- Bolt Kit — BK120E (qty 1)
Cross References
This kit replaces or is equivalent to the following part numbers:
- Stemco: K120E (exact cross), 50.120.05, 70.120.05
- Meritor: R200267, R200269, R203039, G200267 (composite), G200269, R202007 (near cross)
- Dana / Spicer: 806355, KPK3006
- Dayton Parts: 300-257, 300-274, K120E
- Automann: 460.220C, 460.254B, 460.254E
- Sampa: 500.690
- Volvo / White / GMC: V1112810
Applications
This king pin kit fits the following front steer axles:
- Eaton / Spicer / Dana EFA12F4 — 12,000 lb capacity
- Eaton / Spicer / Dana EFA13F5 — 13,000 lb capacity
Representative vehicles using these axles include medium- and heavy-duty Class 7–8 conventionals (Freightliner, International, Kenworth, Peterbilt, Volvo, Western Star) and vocational tractors specced with Eaton EFA12F4 or EFA13F5 front axles.
Verify your front axle model and capacity rating before ordering — EFA12F4 and EFA13F5 share this kit, but other Eaton or Dana front axles use different king pin geometry and require a different SKU.
