Price History for Platinum Spark Plug
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Platinum Spark Plug
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provid
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Aug 4, 2026 | $4.71 |
| Aug 2, 2026 | $4.86 |
| Jul 26, 2026 | $4.50 |
| May 14, 2026 | $4.09 |
| May 7, 2026 | $3.90 |
| Dec 14, 2025 | $3.54 |
| Dec 12, 2025 | $3.54 |
| Nov 16, 2025 | $3.54 |
| Oct 20, 2025 | $3.54 |
Analysis
Platinum Spark Plug price analysis
Price analysis for Platinum Spark Plug at Home Depot: Today's price is $4.71. Current price is 4% above the 90-day average of $4.54 (a $0.17 above the running mean).
- Currently listed at $4.71, which is $1.17 above the original MSRP of $3.54.
- Current price is 4% above the 90-day average of $4.54 (a $0.17 above the running mean).
- The lowest recorded price on PriceWatchPro was $3.54 on October 20, 2025. That's $1.17 below today's price.
- The highest recorded price on PriceWatchPro was $4.86 on August 2, 2026. Today's price is $0.15 below that peak.
- 30-day trend: trending up 4.7% from $4.50 to $4.71.
- No meaningful price drops recorded in the tracked history — this listing has held steady or trended upward.
- PriceWatchPro has been tracking this listing since October 20, 2025 (290 days of price history).
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