Home / 8 Pack Denso 5393 Iridium Power Spark Plugs IWM31
8 Pack Denso 5393 Iridium Power Spark Plugs IWM31
$223.77
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The Denso 5393 Iridium Power Spark Plug (IWM31) is engineered for high-performance small engines operating under extreme conditions. Featuring a fine-wire iridium electrode and compact M10 thread, it provides exceptional ignitability, stable combustion, and superior resistance to heat and fouling—perfect for motorcycles, kart engines, and performance powersports.
Features & Benefits:
🔧 Fine-wire iridium tip ensures reliable high-RPM ignition
🔧 Cold heat range supports tuned and racing engines
🔧 Compact thread design fits tight cylinder heads
🔧 Pre-gapped and ready for easy installation
Specifications:
Brand & Part Number: Denso 5393 (IWM31)
Material: Iridium
Thread Size: 10mm
Reach: 19mm (0.75 in)
Hex Size: 14mm
Heat Range: 31
Seat Type: Gasket
Resistor: Yes
Gap: 0.6mm (0.024 in)
Count on the Denso IWM31 Iridium Power plug for peak spark performance and lasting engine protection in high-demand applications—order yours today!
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.
