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Restore Your Duramax’s Power: Why the 0-986-435-502 Remanufactured Injector Is a Must-Have If you own a 2001–2004.5 GM or Chevy 6.6L Duramax LB7, you know how critical fuel injectors are to maintaining performance, fuel efficiency, and reliability. Over time, injectors wear out—leading to hard starts, poor mileage, and excessive smoke. The Bosch 0-986-435-502 Remanufactured Fuel Injector is remanufactured with OE components to bring your LB7 back to life. What Ma …