Holley Sniper EFI System Replacement LSU4.9 Bosch Wideband O2 Sensor # HO554-155 Rate_Engine and adjustable floats make these

and adjustable floats make these aluminum carburetors bolt-on performance upgrades for a wide variety of vehicles

Theory of Operation and Tuning Procedures

Hose Clamp Covers Included:

Holley 4160 Series Carbruetors Vac Secondary Replacement Fuel Bowl # HO134-105

400 and 700R4 provisions

Holley Sniper EFI System Replacement LSU4.9 Bosch Wideband O2 Sensor # HO554-155 Rate_Engine and adjustable floats make theseHolley Sniper EFI System Replacement LSU4. 9 Bosch Wideband O2 Sensor # HO554 155 Oxygen Sensors, Holley EFI, Replacement, O2 Sensor, Bosch LSU Style, 3 wire, Thread in, Wire Harness, for Sniper EFI or Terminator X Systems, Each Number of Wires: 3 Mounting Style: Thread in Oxygen Sensor Bung Included: No Wiring Harness Included: Yes Quantity: Sold individually. Notes: Sensor is a replacement Bosch LSU 4. 9 oxygen sensor for the Sniper EFI or