Revamp your Mack truck's heavy-duty suspension with Fortpro's cutting-edge Insulator Box! Engineered to perfection for compatibility with Mack 4" Spring SS34/38, SWS573, SS44/SWS57, SS50 Camelback, and SW/SWW Series Suspensions, this Insulator Box, replacing OEM part 52QK418BP4, is more than an upgrade – it's a promise of superior functionality and extended longevity in critical suspension components. Don't settle for the ordinary – choose Fortpro for a smoother, more dependable ride. Upgrade your Mack truck now and experience engineering excellence that exceeds expectations. Call today and embrace the road with newfound confidence!
Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.
Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.
Basic Part Information5 attributes
| Product Line | Suspension |
|---|---|
| Category Name | Chassis & Suspension |
| Part Type | Insulator Box |
| Alternate Part Name | Spring Bracket Cap, Insulator Box |
| OEM Part Number | 52QK418BP4 |
Application/Fitment Attributes2 attributes
| Application Type | Heavy Duty Trucks, Semi-Trucks |
|---|---|
| Mounting Position | Rear Suspension |
Dimensional/Physical Attributes1 attribute
| Material | Steel |
|---|
Packaging / Logistics Attributes:4 attributes
| Package Length | 10.00 in. |
|---|---|
| Package Width | 10.00 in. |
| Package Height | 8.00 in. |
| Net Weight | 32.84 lb. |
Intended Application
- Compatible with Mack Camelb.ack rear suspensions using 4 in. wide leaf springs, including SS34, SS38, SS44 (formerly SWS573), SWS57, and SS50 series; also compatible with SW and SWW walking beam suspension systems. Designed for tandem rear suspension applications rated for 34,000 lb., 38,000 lb., 44,000 lb., and 46,000 lb., including configurations with rubber, polyurethane, or bronze trunnion bushings (3-1/2 in. ID), commonly used in Mack ST Series tapered leaf spring suspensions.
- Always compare with your OEM part number prior to purchase to confirm full compatibility.
- Automann: M1070
- Dayton Parts: 338-746
- Euclid: E-3688
- Mack: 52QK418BP4
- PAI: FSB47310