Home / 6 Pack Denso 5373 Iridium Power Spark Plugs IX27
6 Pack Denso 5373 Iridium Power Spark Plugs IX27
$93.77
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The Denso 5373 Iridium Power Spark Plug (IX27) is engineered for high-performance engines that demand cold heat range plugs with exceptional ignition efficiency. Featuring a fine-wire iridium electrode and high-compression durability, it ensures quick starts, stable combustion, and optimal power delivery in motorsports and modified applications.
Features & Benefits:
🔧 Iridium center electrode improves ignitability and durability
🔧 Cold heat range supports aggressive engine setups
🔧 Ideal for racing and high-load conditions
🔧 Pre-gapped and ready for direct installation
Specifications:
Brand & Part Number: Denso 5373 (IX27)
Material: Iridium
Thread Size: 14mm
Reach: 19mm (0.75 in)
Hex Size: 16mm
Heat Range: 27
Seat Type: Gasket
Resistor: Yes
Gap: 0.8mm (0.031 in)
Push your engine to peak performance with Denso Iridium Power IX27—trusted by professionals worldwide!
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.
