My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

DENSO 5021 Standard Spark Plug U-Groove Design

(Chevrolet Corvette 1997-2004, Impala 2014-15, Volt 2011-15; Pontiac Firebird 1975-79, Grand Prix 1975-79, Grand Am 1975, Bonneville 1975-79 + 23 more models)

Part of: DENSO U-Groove Standard Spark Plug

Other options in this family: DENSO 3075 DENSO 4174 DENSO 4116 DENSO 4131 DENSO 4096

Manufacturer

Picture for manufacturer DENSO

Part Number

5021
10 reviews
Sale Price

$4.07

In Stock (10+)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The DENSO 5021 is a standard spark plug engineered to deliver reliable ignition performance for a wide range of vehicles. This spark plug features DENSO's innovative U-Groove ground electrode design, which creates a larger and more concentrated spark for improved ignitability and combustion efficiency.

Key Features:

  • U-Groove ground electrode technology for enhanced spark exposure to the air-fuel mixture
  • Improved ignitability for more complete combustion and better fuel efficiency
  • Copper core construction for excellent heat dissipation and thermal performance
  • Reliable standard design suitable for everyday driving conditions
  • Manufactured to OE specifications for dependable performance

DENSO's U-Groove design positions the spark in an optimal location within the combustion chamber, promoting faster flame propagation and more efficient engine operation. This results in smoother acceleration, improved throttle response, and reduced emissions compared to conventional spark plug designs.

Products specifications

Fits

Chevrolet Corvette 1997-2004, Impala 2014-15, Volt 2011-15; Pontiac Firebird 1975-79, Grand Prix 1975-79, Grand Am 1975, Bonneville 1975-79, LeMans 1975-79, Catalina 1975-79, Ventura 1975, 1977, Sunbird 1976-78, Grandville 1975 + 18 more models

Seat Type

Tapered

Pre-Gap Size

1.5

Ground Electrode Core Material

Nickel

Center Electrode Tip Material

Nickel

Ground Electrode Quantity

1

Manufacturer Heat Range

14

Ground Configuration

Standard

Center Electrode Core Material

Copper

Thread Diameter

14.00

Resistance

5000

Ground Electrode Tip Design

U-Groove

Reach

11.60

Hex Size

16.0

Great prices and quick shipping! They kept me informed of when the item was shipped also. Couldn't be happier!

easy to find what you are lokking for and fast shipping.

Good seller with good communication. Would buy from again.

Execellent retailer. Easy to buy from online. Got product quickly at a great price. I highly recommend!

Thanks

This place was great. Great service they really helped mr out and were fast and extremely helpful.

Fast shipping! Great product! Muffler sounds amazing and will buy again!

My name is Doug Raber and I tell you the truth when I say autoplicity is a great site to shop for auto parts. The prices are low and the customer service is excellent.

Good transaction, no problems, fast ship, quality product. Thanks

Seller was quick and hasle free to deal with. Will purchase again from this seller.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy