1 Pack GM ACDelco #21 RAPIDFIRE Platinum Spark Plugs ps

The GM ACDelco RAPIDFIRE #21 Platinum Spark Plug is engineered for consistent ignition, smoother engine operation, and improved fuel efficiency in GM engines. Featuring platinum electrodes, it ensures long-lasting spark, reduced wear, and optimal combustion. This spark plug is ideal for GM vehicles requiring high-performance ignition, providing reliable starts, smoother acceleration, and better overall engine efficiency.

Features & Benefits:

🔧 Platinum electrodes deliver long-lasting spark and consistent performance

🔧 Suppressor seal reduces EMI and RFI interference for stable ignition

🔧 Improves fuel economy and combustion efficiency

🔧 Pre-gapped for quick and easy installation

Specifications:

Brand & Part Number: ACDelco RAPIDFIRE #21

Material: Platinum Tip, Copper Core

Thread Size: 14mm

Reach: 0.75 in. (19mm)

Gap: Pre-gapped (~0.040 in.)

Optimize engine performance with ACDelco RAPIDFIRE #21 Platinum spark plugs!

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