Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info Needed0437S-4 Copper Core Spark Plugs Shorty Design
Ships on Nov 02, 2026
Lowest Price GuaranteeC-Cut Spark Plugs
ACCEL has improved the ignitability of the spark plug in a new design! ACCELhas always utilized unique electrode grounding designs to improve combustionand create a larger spark.Accel 0437S-4 Features:
- Allows spark to expand directly above the midpoint of the electrode core - preventing the spark from being shrouded by the ground strap.
- Gives the flame an unblocked area to grow - creating a larger flame front for a more complete burn.
- Reduces excess heat absorption of the electrode and ground strap, also known as the 'quenching effect', leading to misfiring, rough idle, and poor performance.
- Produces a larger spark nucleus without having to increase the spark gap.
- Creates a more complete burn of the air-fuel mixture resulting in -Increased performance, improved throttle response, greater fuel efficiency, and reduced emissions.
Accel 0437S-4 Note:
- Not Compatible with 90-Degree Ceramic Plug Wire Boots
Since the mid 1980's, Accel's U-Groove spark plugs have set the standard for high performance spark plugs. Accel engineers developed and patented the U-Groove technology which permitted the spark to develop a much larger, hotter and fuller flash front. That effectively gave a more complete burn of the air/fuel mixture in the combustion chamber. Over the past 25 years engine head design and fuel management technology has changed.
Show More
As a result, Accel is moving away from the U-Groove construction to the familiar "conventional" style ground electrode. In addition, the upper insulator will now be white instead of yellow, and available in convenient 4-packs. Bottom line...This one-piece construction spark plug with conventional ground electrode provides exceptional performance and value by producing:
- Hotter Spark/Faster Burn Rate for more power at high rpms
- Improved Throttle Response, Fuel Economy, and Reduced Fouling
- Reduced Mis-fires
- Purified Alumina Insulator to prevent arcing
- Machine-rolled threads to protect heads
Note: The last digit in the part number of the spark plug represents the spark plug heat range. 1 is the coldest. 7 is the hottest.
Example: 111-0111-4 is the coolest plug and 111-0116-4 is the hottest in that specific style spark plug.
Click Here for Accel Spark Plug Cross Reference
Spark Plug Heat Range Explanation, Click Here
Items You Need
ITEM YOU MAY ALSO CONSIDER
