Air Bypass Valves: DOUG'S HEADERS

• Dougs Headers DEC300A 1L…
• 1971-1972 Triumph Stag Mk I U
• 1991 - 1992 Kawasaki ZX7: Mot
• Rush 3 Slip-On Mufflers - Bal
• TYC 2040042 Saturn L Series D
• 89-90 Nissan 240SX KA24E 2.4L