Maintain precise suspension alignment and eliminate excessive play on your fleet vehicles with the ATRO MS62-29246 Heavy-Duty Insulator Spacer Block. Manufactured to exacting standards in the United States, this replacement spacer block is engineered specifically for vocational trucks running Mack Camelback suspension systems.
Unlike standard aftermarket replacements that struggle under extreme structural loads, this rugged metal-constructed block ensures proper load spacing, exceptional durability, and unyielding support across rigorous vocational applications.
Important Correction Note: Please be aware that while ATRO is widely recognized for its premium polyurethane bushings, this specific part number is a pure solid METAL component engineered by ATRO to handle raw compression loads within the suspension stack.
Shipping Weight: 3.375 lbs
UPC Code: 751354028690
Part Length: 4 3/4"
Part Width: 3"
Part Height: 1 7/16"
Material: Heavy-Duty Metal
Quantity Per Vehicle: 8 required for a complete setup
Country of Origin: United States
This insulator spacer block is designed explicitly for heavy-duty vocational vehicles equipped with legendary Mack heavy-haul suspension series.
Suspension Families: Mack Camelback, ST34, SW, and SWW series platforms.
Fitment Location: Directly integrated inside the leaf spring insulator and trunnion housing assembly.
This part is a direct or high-quality exact alternative to the following manufacturer and aftermarket part numbers:
| Brand | Part Number | Cross Type | Application Notes |
|---|---|---|---|
| Mack (OEM) | 13QK246 | Exact Cross | Camelback; ST34; SW/SWW |
| Mack (OEM) | 25157862 | Exact Cross | Camelback; ST34; SW/SWW |
| Automann | M878 | Exact Cross | Heavy-Duty Suspension |
| Dayton Parts | 338-729 | Exact Cross | Aftermarket Replacement |
| Euclid | E-3689 | Exact Cross | Aftermarket Replacement |
| Flagg | E316-62 | Exact Cross | Aftermarket Replacement |
| PAI | FSP-4752 | Exact Cross | Aftermarket Replacement |
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.