7.5mm Dummy Fuel Injectors Plugs for Gen V Direct Injection L83 LT1
7.5mm Dummy Fuel Injectors Plugs for LT Engines
Compatible with: GM Gen V LT Series Engines
- Used when switching to port fuel injection
- These 7.5mm plugs are compatible with 2014-2018 (GM started using 6mm injectors in some models and years inconsistently from 2019-2024. 2025+ used only 6mm) LT1, LT4, L83, L86, L8B engines. For 6mm injector engines then use 551333-L84
- Requires plugging the lifter bore for the high pressure fuel pump, available separately, 551965-PLUG
- Includes: 8 mock injectors, retainer bars, and pre-installed seals
- Made in Wichita Kansas from 6061-T6, USA produced billet aluminum
Helpful Links
- Replacement -203 oring
- Replacement -202 oring
- Replacement -108 oring
PLEASE MEASURE YOUR FACTORY INJECTOR NOZZLE DIAMETER BEFORE ORDERING.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
7.5mm Dummy Fuel Injectors Plugs for Gen V Direct Injection L83 LT1
7.5mm Dummy Fuel Injectors Plugs for Gen V Direct Injection L83 LT1
7.5mm Dummy Fuel Injectors Plugs for LT Engines
Compatible with: GM Gen V LT Series Engines
- Used when switching to port fuel injection
- These 7.5mm plugs are compatible with 2014-2018 (GM started using 6mm injectors in some models and years inconsistently from 2019-2024. 2025+ used only 6mm) LT1, LT4, L83, L86, L8B engines. For 6mm injector engines then use 551333-L84
- Requires plugging the lifter bore for the high pressure fuel pump, available separately, 551965-PLUG
- Includes: 8 mock injectors, retainer bars, and pre-installed seals
- Made in Wichita Kansas from 6061-T6, USA produced billet aluminum
Helpful Links
- Replacement -203 oring
- Replacement -202 oring
- Replacement -108 oring
PLEASE MEASURE YOUR FACTORY INJECTOR NOZZLE DIAMETER BEFORE ORDERING.
$71.40
Original: $203.99
-65%7.5mm Dummy Fuel Injectors Plugs for Gen V Direct Injection L83 LT1—
$203.99
$71.40Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
7.5mm Dummy Fuel Injectors Plugs for LT Engines
Compatible with: GM Gen V LT Series Engines
- Used when switching to port fuel injection
- These 7.5mm plugs are compatible with 2014-2018 (GM started using 6mm injectors in some models and years inconsistently from 2019-2024. 2025+ used only 6mm) LT1, LT4, L83, L86, L8B engines. For 6mm injector engines then use 551333-L84
- Requires plugging the lifter bore for the high pressure fuel pump, available separately, 551965-PLUG
- Includes: 8 mock injectors, retainer bars, and pre-installed seals
- Made in Wichita Kansas from 6061-T6, USA produced billet aluminum
Helpful Links
- Replacement -203 oring
- Replacement -202 oring
- Replacement -108 oring
PLEASE MEASURE YOUR FACTORY INJECTOR NOZZLE DIAMETER BEFORE ORDERING.
