ACDelco R45TS Spark Plugs Pack of 8 — Copper-Core Ignition, Corrosion-Resistant Black Onyx Finish

ACDelco R45TS Pkg 8 are a boxed set of eight replacement spark plugs engineered for reliable ignition, corrosion resistance, and broad compatibility — with a promotional rebate included.

These ACDelco R45TS spark plugs come as a convenient pack of eight, ready to replace worn units in compatible gasoline engines. They pair a copper-core design with durable sheathing and a protective black finish to balance thermal transfer, longevity, and resistance to environmental wear. The pack includes a rebate offer that reduces your net cost by $4, making it a practical choice for maintenance or multi-cylinder tune-ups.

Why choose these spark plugs over generic replacements?

ACDelco designed the R45TS to deliver predictable heat management and dependable electrode durability while resisting corrosion in harsh conditions. The copper core helps manage combustion temperatures, while the nickel-chrome outer layer and black onyx coating protect key surfaces from rust and chemical attack.

• Copper core for consistent thermal conductivity and stable firing.
• Nickel-chrome sheathing to protect the center electrode from corrosion.
• Black onyx coating defends the external threads and shell from rust.
• Box of eight for full multi-cylinder replacements or spare inventory.

How do these spark plugs perform in marine or high-moisture environments?

The R45TS plugs are rated for use in marine applications and include surface treatments to resist corrosion commonly found near saltwater or humid conditions. Proper installation and periodic checks help maintain performance when exposed to moisture or spray.

• Black onyx finish reduces surface corrosion from salt and moisture.
• Nickel-chrome sheathing guards the center electrode in humid environments.
• Compatible with engines specified for copper-core spark plugs in marine settings.

What maintenance or replacement schedule should I follow?

Replacement intervals depend on vehicle make, model, and driving conditions; consult your vehicle's service manual for exact recommendations. As a general rule, inspect spark plugs during routine tune-ups and replace them if electrodes show heavy wear, deposits, or corrosion.

• Check plugs during scheduled tune-ups or when experiencing misfires.
• Replace all cylinders' plugs at the same time when performance declines.
• Keep the spare box of eight for quick multi-cylinder service.

What comes in the box and how does the rebate work?

The package contains eight new ACDelco R45TS spark plugs ready for installation and a rebate offer that reduces the effective purchase price by $4 after submission. Keep the sales receipt and any rebate codes for redemption according to the retailer or manufacturer instructions.

• Eight packaged ACDelco R45TS spark plugs, ready for vehicle service.
• Rebate paperwork or promotional details included at point of sale.
• Follow rebate submission steps listed by the seller to claim $4 back.

Who is this for? Technicians, do-it-yourselfers, and fleet managers who need a cost-effective eight-pack of reliable replacement spark plugs will appreciate the ACDelco R45TS. It’s particularly useful for owners of older or high-mileage vehicles, marine engines, or anyone performing a full multi-cylinder service who wants corrosion resistance, dependable thermal properties, and a small rebate to lower ownership cost.