| Management number | 250377460 | Release Date | 2026/09/17 | List Price | US$34.90 | Model Number | 250377460 | ||
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Replacement for Peterbilt 389 year 2015 air leaf suspension, this rear spring bushing mount provides the component needed to restore the suspension assembly connection points. The part aligns with the requirements of the original mount location in the air leaf system. Heavy duty trucks like the Peterbilt 389 rely on robust suspension components to handle demanding loads over long distances. Over time, the rear spring bushing mount experiences wear from vibration, road conditions, and repeated flexing of the air leaf springs. Replacing a worn or damaged mount restores proper alignment, reduces unwanted movement, and helps maintain consistent ride height and handling characteristics. This aftermarket solution is manufactured from durable materials selected for strength and resistance to corrosion in commercial trucking environments. Installation involves removing the old mount hardware, inspecting adjacent suspension elements for additional wear, and securing the new mount in the designated rear spring position. Proper torque specifications should be followed during reassembly to ensure long service life. Fleet operators and owner drivers benefit from proactive maintenance of suspension bushings because it minimizes downtime and supports safe operation under varying payload conditions. The design replicates critical dimensions and mounting patterns required for direct fitment without modifications to the existing air leaf assembly. Key Features & Benefits - Constructed to match the suspension mount geometry for the specified Peterbilt model - Supports the spring interface in the air leaf configuration - Provides the bushing retention needed at the rear spring location - Resists deformation under heavy loads and repeated articulation - Facilitates straightforward replacement during routine suspension service Product Specifications - Material: High-strength steel alloy with corrosion-resistant coating - Bushing inner diameter: 1.250 inches - Overall length: 7.
| ASIN | B0F4KXH73J |
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| Brand | Technical Precision |
| Model | TZ-EX4J-J |
| Manufacturer | Technical Precision |
| Item model number | TZ-EX4J-J |
| Manufacturer Part Number | TZ-EX4J-J |
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