ACDelco R43TS Copper Resistor Spark Plug, 4-Pack

ACDelco R43TS is a copper resistor spark plug used in many GM-based service applications and available through automotive and marine parts channels. The live record indicates a 4-pack and references MR43T-style marine spark plug wording; match the exact plug number, heat range, and engine service manual before installation.

ACDelco R43TS Copper Resistor Spark Plug, 4-Pack is listed in the Laken Water Sports marine parts catalog for online ordering and Phoenix-area pickup. Confirm fitment, availability, and pickup timing with the parts team before ordering when compatibility is critical.

Fitment notes: Spark plug; verify R43TS vs MR43T requirement and pack quantity before sale.