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Exterior Components› Body Panels and Components
FiTECH FUEL INJECTION
Repl. Fuel Injector 55LB
SKU: F03O 10055
Moderate — 2–4 hours
Overview
This injector is compatible with both throttle-body and port-style fuel injection systems, making it a versatile component for engine upgrades or replacements. O-rings are included for installation.
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Part #: 10055
Fuel Injector - Replacement - FiTech Throttle Body EFI Systems - Each
Vehicle Symptoms
- Engine misfire at idle or under load
- Rough idle and stumbling upon acceleration
- Poor fuel economy and excessive exhaust emissions
- Hard starting or extended crank time
- Hesitation or surging during driving
Diagnostic Codes
- P0200 – Injector Ckt Malf
- P0201 – Injector Ckt/Open - Cylinder 1
- P0261 – Cylinder 1 Injector Ckt Low
- P0300 – Random or multiple cylinder misfire Det
- P0301 – Cylinder 1 misfire Det
Relevant Conversations
- 55 lb/hr injector for LS swap
- FiTech 10055 injector replacement
- rough idle code P0201 fix
- P0301 misfire injector replacement
- upgrade to 55 lb injectors
- FiTech fuel injector installation guide
- 55 lb/hr injectors for 5.3L
- injector circuit low voltage P0261
- random misfire P0300 new injectors
- best injectors for Holley Sniper
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | FiTECH FUEL INJECTION |
| Part Number | F03O 10055 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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