1. Fits LS3,LS7, for VW, and for GM all LT series engines 2014 and newer. 2. Radius cut on bottom to accept 4 inch pipe. 3. Constructed from aerospace grade 6061-T6 billet aluminum for durability. 4. Compatible with many sensor part numbers and vehicle RPO codes including, but not limited to the following: Gen III, IV, and V, engine RPO codes: LS3, LS7, LS9, LSA, LV1, LV3, LT1, LT4, L83, L86 15865791, 23262343, 23262344, 22895480, 23144941, 2134222, 12576410, 2133134 for Corvette, for Z06, for Camaro, for ZL1, for CTS-V, for CT6, for ATS, for Chevrolet Silverado, for GMC Sierra 5. Material: 6061-T6 billet aluminum