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Choose a product to check model and year applications, engine part numbers, finish matching or installation requirements.
Spark Plug Set Vortec 5.7L Autolite Set Of 8 OEM RP030008
SKU: Gt-Autolite 103 · See product page for ordering availability
View product →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.
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