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Review on πŸ”Œ ACDelco Professional R44LTS6 Spark Plug: Top-Performance Conventional Plug for Optimal Vehicle Ignition (1 Pack) by Hugh Starr

Revainrating 5 out of 5

Perfect base spark plug

I bought these plugs for my 1999 GMC Suburban 5.7L. Ideal basic spark plug. Mine came preset at .060, which is within spec, but as any good mechanic knows, always check the gap spec before installing. I highly recommend these spark plugs.

Pros
  • Very impressive
Cons
  • boring package