Tri-Y Headers for 68-91 GM Truck 396-502 BBC 1-3/4in Primary D303Y-B engine-components Upgrade Your Vehicle's Performance: This

Upgrade Your Vehicle's Performance: This kit includes Differential Drop Brackets

7L V8 1969 Chevrolet Estate 427/7L V8 1965 Chevrolet Corvette 396/6

Designed to fit the 2004-2005 Chevrolet Trailblazer EXT

Reference Number Reference Name 7673 Gates 13671 Continental/ContiTech 15670 Dayco F1HT-8620-GA OEM Part Number 151533-K11 OEM Part Number 151533-K21 OEM Part Number 151533-R11 OEM Part Number 151533-R21 OEM Part Number 151533-R22 OEM Part Number 358342-C91 OEM Part Number 861409-K11 OEM Part Number 361975-C91 OEM Part Number 968814-K21 OEM Part Number 968814-K31 OEM Part Number 968814-R11 OEM Part Number 968814-R21 OEM Part Number 968814-R31 OEM Part Number 968814-R1 OEM Part Number 968814-R2 OEM Part Number 968814-R3 OEM Part Number 3830655 OEM Part Number 9433784 OEM Part Number 1947132 OEM Part Number 3897466 OEM Part Number 3897467 OEM Part Number 3830654 OEM Part Number 3973203 OEM Part Number BH268A OEM Part Number MF1670 OEM Part Number 12156 OEM Part Number 12166 OEM Part Number BH268 OEM Part Number 257673 NAPA 15673 AC Delco

Tri-Y Headers for 68-91 GM Truck 396-502 BBC 1-3/4in Primary D303Y-B engine-components Upgrade Your Vehicle's Performance: ThisOverview: 68 91 GM Truck BBC Tri Y Black Ctd Doug's is the pioneering force behind the popular TRI Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid range torque without sacrificing top end power. TRI Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency. Features: 3 8" thick machined flanges to prevent warping CNC