Spark Plug Set Vortec 5.7L Autolite Set Of 8 OEM RP030008
Set of eight Autolite 103 spark plugs listed under the RP030008 replacement reference for checking a Vortec 5.7L application.
Engine & part-number match
Set of eight Autolite 103 spark plugs listed under the RP030008 replacement reference for checking a Vortec 5.7L application. The listing also references AC Delco MR43LTS. Confirm the engine, ignition system and current plug before ordering.
Before ordering
- Engine model and serial number; the boat year alone is insufficient.
- Complete number on the existing part and any replacement/supersession reference.
- Printed plug identity, terminal type and required quantity.
Exact replacement needs confirmation. Use the checks above so GT40 can confirm the correct part.
Compare product fitment →Product details
Set of eight Autolite 103 spark plugs listed under the RP030008 replacement reference for checking a Vortec 5.7L application. The listing also references AC Delco MR43LTS. Confirm the engine, ignition system and current plug before ordering.
Fitment & setup
Why does the ignition system matter?
The required plug gap can differ with the ignition configuration. Confirm the exact engine and ignition specification from the applicable service information before setting the gap or installing the plugs.
Which part numbers should I compare?
Compare the installed plug against Autolite 103, RP030008 and the MR43LTS reference shown in the listing. Have GT40 check the exact application if the current plug or ignition setup differs.