Description Additional Info Product Reviews Front Engine Insulator, Metal top and bottom 2-5/8in x 1-3/8in x 11/16in x 1-1/8in Mack E6 Application Cross References:20QL312M2, FMT-4658 UPC: 193807220204 Mfr Part Number: 4658 Description: Front Engine Insulator, Metal top and bottom 2-5/8in x 1-3/8in x 11/16in x 1-1/8in Mack E6 Application