Home / 1 Pack Denso 3499 Iridium Long Life Spark Plug SC16HR11
1 Pack Denso 3499 Iridium Long Life Spark Plug SC16HR11
$28.77
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The Denso 3499 Iridium Long Life Spark Plug (SC16HR11) is engineered to provide superior ignition, enhanced fuel efficiency, and long-lasting engine performance. Featuring an iridium center electrode, it ensures consistent spark, reduced wear, and optimal combustion. Ideal for modern and high-performance engines, the SC16HR11 guarantees reliable starts, smoother operation, and extended service intervals, making it perfect for a wide range of vehicles and applications.
Features & Benefits:
🔧 Iridium center electrode ensures long-lasting spark and reduced wear
🔧 Improves combustion efficiency for better engine performance
🔧 Enhances fuel economy and reduces emissions
🔧 Pre-gapped for quick and easy installation
Specifications:
Brand & Part Number: Denso 3499 (SC16HR11)
Material: Iridium Tip, Copper Core
Thread Size: 14mm
Reach: 0.75 in. (19mm)
Gap: Pre-gapped (~0.040 in.)
Enhance engine performance and fuel efficiency with Denso 3499 Iridium Long Life Spark Plugs! 🔧
Shipping Info
Free shipping on every US order. In-stock parts typically ship within 1 business day from Texas.
Returns
30-day returns on unused parts in original packaging. Wrong or defective items are replaced or refunded. See the return policy.
How do I confirm this part fits?
Match the brand and part number to your vehicle, or use the Parts Finder on the homepage. Contact us before ordering if you are unsure.
Are these parts new?
Yes. TXN Supply Co sells new parts from trusted OEM-quality brands — not remanufactured cores.
How fast will my order ship?
In-stock orders ship within 1 business day. Delivery time depends on your ZIP; most US addresses arrive in 2–5 business days.
What is your return policy?
Unused items can be returned within 30 days in original packaging. Customer-initiated returns may include a restocking fee and return shipping.
