Peterbilt Trelleborg Style - 4 Bolt - Caterpillar or Cummins - Taper Flywheel Housing

Rear Engine Mount Bracket Kit (Engine Side) for Caterpillar or Cummins Engines – 4-Bolt Trelleborg Style (Tapered Flywheel Housing) for Peterbilt Trucks.

This rear engine mount bracket kit is designed for Caterpillar or Cummins engines with 10-degree tapered flywheel housings in Peterbilt trucks equipped with 4-bolt Trelleborg style frame mounts. The brackets feature slotted holes that accommodate both Cummins and Caterpillar engine bolt patterns. The 4-bolt Trelleborg style was the factory standard on 2017 and newer Peterbilt trucks, but the kit can be used on earlier models when the frame mounts are upgraded to 4-bolt Trelleborg.

Kit Includes:

• (2) Rear Engine Mount Brackets (Engine Side Only) – Powdercoated
• (8) 3/4" Bolts – Grade 8 (for flywheel housing attachment)
• (8) 3/4" Flat Washers – Grade 8 (for flywheel housing attachment)
• (8) 3/4" Nylock Nuts – Grade 8 (for flywheel housing attachment)
• (8) M16 Flange Bolts – Grade 10.9 (for frame mount attachment)

Compatibility:

• Peterbilt trucks with 4-bolt Trelleborg style frame mounts
• Factory standard on 2017 and newer Peterbilt trucks
• Caterpillar or Cummins engines with 10-degree tapered flywheel housing
• Common models include 389, 388, 386, 367, etc.

Important Notes:

• Slotted holes allow compatibility with both Cummins and Caterpillar engine bolt patterns. Slots must face toward the rear of the engine during installation.
• Compatible with Kustom Truck 4-bolt Trelleborg frame-side brackets PN: 19917011.
• Engine-side mounts are only compatible with matching 4-bolt Trelleborg style frame mounts.
• Contact Kustom Truck to confirm compatibility with your specific truck and mount configuration.

Key Specifications:

• Powdercoated steel brackets for corrosion resistance
• High-strength Grade 8 and Grade 10.9 hardware
• Slotted holes for Cummins and Caterpillar bolt pattern compatibility