Home / 4 Pack Denso 3021 U-Groove Spark Plugs W16EPR-U
4 Pack Denso 3021 U-Groove Spark Plugs W16EPR-U
$25.77
Free shipping on all orders.
Sold Out
The Denso 3021 U-Groove Spark Plug (W16EPR-U) is designed to provide superior ignition performance, enhanced fuel efficiency, and long-lasting engine durability. Featuring a U-Groove electrode design, it ensures consistent spark, improved combustion efficiency, and reduced wear. Ideal for modern engines, the W16EPR-U delivers reliable starts, smoother operation, and extended service intervals, making it the perfect choice for a variety of vehicles.
Features & Benefits:
🔧 U-Groove electrode design ensures consistent and powerful spark
🔧 Improves combustion efficiency for better engine performance
🔧 Reduces wear and enhances fuel economy
🔧 Pre-gapped for quick and easy installation
Specifications:
Brand & Part Number: Denso 3021 (W16EPR-U)
Material: Nickel Alloy Electrode, Copper Core
Thread Size: 14mm
Reach: 0.75 in. (19mm)
Gap: Pre-gapped (~0.040 in.)
Enhance engine performance and fuel efficiency with Denso 3021 U-Groove 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.
Customer Reviews
-
Good spark plugs. Engine runs great
— plarr....
