buick grand national spark plug wires | eBay Find great deals on eBay for buick grand national spark plug wires. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Spark Plug Wire Set For 1984-1987 Buick Regal Grand National 1985 1986 MSD 31869. Part#31869. Brand New · MSD Ignition. 5.0 out of 5 stars. Spark Plug Wires | GN1Performance Buick Grand National This is a set of "MSD 8 Spark Plug Wires " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6's 8 Super Conductor wire sets have a special helically wound core that has just 40-50 ohms of resistance per foot--but with an RFI suppression equal to a 1,500 ohm wire.
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