NGK Standard Spark Plug

NGK Standard Spark Plug

Part Number: 7421
In Stock
In Stock
Est. Delivery: Oct 22-23
Price: $ 2.49
Start earning AutoZone Rewards credits with this purchase!
Find Out How
Hot Deals & Savings
FREE Shipping
On orders $35 or Greater and FREE Shipping to APO, FPO, DPO addresses. See Details
Features & Benefits

Corrugated ribs to prevent flashover. High dielectric strength, proper heat transfer, eliminates combustion gas leakage, greater spark and heat transfer, better anti-fouling, corrosion resistant.

Product Details
Part Number: 7421
Weight: 0.08lbs
Spark Plug
14 mm. Thread Size
3/4 in. Drive Size
0.7 mm. Factory Preset Gap
Non-Projected Insulator Type
Thread Size: 14 mm.
Resistor: Yes
Heat Range: 6
Center Electrode Material: Nickel Alloy
Number of Electrodes: 1
Insulator Type: Ceramic
Ground Electrode Material: Nickel alloy
Thread Reach: 3/8 in. (9.50 mm.)
Seat Type: Gasket
Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses.
Core Parts Battery Icon

Core Parts

Return core parts to the store to be refunded the price.

Core Parts Policy
Next Day Truck Icon

Free Shipping

Orders $35 or greater, includes APO, FPO, DPO addresses.

Get More Details
Return Anywhere Box Icon

Return Anywhere

Buy Online, Return Anywhere

Get More Details
BOPUS Clock Icon

Same-Day Store Pickup

Save time by buying online and picking up items in store.

Learn More® ©2001- 2019  AutoZone, Inc. All Rights Reserved.