ACCEL 0416S-4 Spark Plug
ACCEL 0416S-4 Spark Plug
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ACCEL 0416S-4 Spark Plug

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Key item features

  • Compact Design: Shorty spark plugs eliminate dimpling headers and improve access for sockets or wrenches due to a shorter overall length compared to OE-style plugs.
  • Enhanced Clearance: Reduced plug length (3/16 to 3/8 inch) creates critical air gap, preventing burned spark plug boots and header tube damage.
  • Superior Conductivity: Features a copper core center electrode, offering better conductivity than platinum and iridium for a stronger spark, especially in high-performance applications.
  • Efficient Heat Dissipation: Copper core effectively dissipates heat, reducing the likelihood of misfires under high combustion pressures.
  • Adjustable Gap: These spark plugs are gapable, allowing for a larger flame kernel or adjustment for high boost applications.
  • Precise Threading: Machine-rolled threads ensure more precise engagement and improved torque retention.
  • Specific Dimensions: Designed with a 14mm thread, .750 inch reach, and a gasket (flat) seat, available in a 4-pack.
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Current price is $47.13
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4.414965986394558 stars out of 5, based on 294 seller reviews(4.4)
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3.9 out of 5 stars
stars10 ratings3 reviews
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Showing 1-3 of 3 reviews

Mar 31, 2016
70 Malibu
5 out of 5 stars review

Right Fit

I've used this plugs before and have the same great results. The fit is just right in my 383 stroker with Hooker super comp headers. And they don't leave ya much room on number 5. The shorties are The right choice.

Review from jegs.com
Helpful?60YDOTL98NNL54945774
May 3, 2020
Heat
2 out of 5 stars review

accel header plugs

for a plug sold as a solution for header clearance these plugs are only 1/8" shorter than the standard plugs so my plug wire boot was still contacting the header. I purchased these hoping I would not have to "clearance" one of my header pipes but 1/8" doesn't make that much of a difference so I still had to clearance the header and also purchased a set of ceramic plug wires. I do have plug wire boots to block heat from the headers but my new heads raised the exhaust port almost an inch resulting in the issue.

Review from jegs.com
Helpful?60YDOTL98NNL54945774
Apr 20, 2021
RussellK
1 out of 5 stars review

These are not SHORTY plugs a rip off

These are NO shorter than a standard plug .....rip off

Review from jegs.com
Helpful?60YDOTL98NNL54945774