The Automann MK16921 (Alternate # 05302) is a Fleet Standard front spring axle spacer block engineered specifically for heavy-duty Kenworth steering suspension systems. Constructed from premium solid aluminum, this 1.0-inch high block provides critical ride height leveling, alignment correction, and precise axle seating for commercial vehicles utilizing 4.0-inch wide front leaf springs.
| Feature | Specification |
|---|---|
| Primary Part Number | 05302 |
| Automann Part Number | MK16921 |
| Reference / OE Number | K2214737, K221-4737 |
| Product Level | Fleet Standard |
| Material | Premium Aluminum |
| Block Height | 1.0 in. |
| Spring Width Fitment | 4.0 in. Front Spring |
| Component Type | Axle Spacer / Spring Seat |
| Weight | 1.81 lbs |
| Package Dimensions | 6" x 4" x 1.25" |
| Shipping Type | Parcel Friendly |
| UPC Code | 889626113741 |
This steering suspension block is engineered for Kenworth commercial trucks requiring a 4-inch wide front spring setup.
Compatible Models: Kenworth T660 (and other Kenworth commercial models matching OEM specs)
Placement: Front Suspension Axle & Spring Seat (Left or Right side)
Kenworth: K2214737
Kenworth: K221-4737
Fleet Standard Reliability: Built to exact original equipment guidelines to handle high vocational loads and harsh operating conditions.
Corrosion-Resistant Aluminum: Heavy-duty aluminum composition delivers exceptional structural integrity without adding unnecessary front-end weight.
Accurate Suspension Leveling: Provides an exact 1.0-inch lift to maintain precise front-axle steering geometry and reduce tire wear.
Direct Fitment: Perfect mechanical interchange for Kenworth factory part number K221-4737, ensuring no modifications are needed during installation.
Suspension > Kenworth > Spacers
Suspension > Kenworth > Axle & Spring Seats
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