SKU: 88839433672

HP Copper Spark Plug - Shorty - 0414S-4

Sale price$40.09 Regular price$44.54
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

HP Copper Spark Plug - Shorty - 0414S-4Overview: ACCEL's patented race proven spark plugs in a Shorty configuration. The overall length has been reduced 3 16 in to 3 8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. This helps eliminate burning the spark plug boot or dimpling the header tube. The shorter spark plug length also can make it easier to install an remove the spark plugs in certain

Overview:

ACCEL's patented race proven spark plugs in a Shorty configuration. The overall length has been reduced 3/16 in to 3/8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. This helps eliminate burning the spark plug boot or dimpling the header tube. The shorter spark plug length also can make it easier to install an remove the spark plugs in certain applications where there is not a lot of room to fit a socket or move a wrench around. ACCEL Shorty Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL Shorty Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL Shorty Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.

Features:

  • Shorty Spark Plugs For Tubular Exhaust Headers
  • Eliminates Dimpling Headers For Added Clearance
  • Improves Spark Plug Access To Fit Socket Or Wrench
  • Shorter Overall Plug Length Vs. OE Style Plug
  • Copper Core Center Electrode
  • Projected Tip
  • Helps Eliminate Burned Spark Plug Boots
  • Shorty Header Spark Plug

Application:

Year Make Model Submodel Engine Size
1987 Chevrolet Camaro Iroc-Z 350/5.7 V8
1986 - 1987 Chevrolet Corvette 350/5.7 V8
1988 Oldsmobile Cutlass Supreme Classic Brougham 307/5 V8
1986 - 1987 Buick Regal Limited 307/5 V8
1986 - 1987 Buick Regal Base 307/5 V8
1986 - 1990 Chevrolet Caprice 307/5 V8
1985 - 1987 Oldsmobile Cutlass Salon 307/5 V8
1985 - 1987 Oldsmobile Cutlass Supreme 307/5 V8
1988 Oldsmobile Cutlass Supreme Classic 307/5 V8
1986 - 1987 Buick Regal Limited 305/5 V8
1986 - 1987 Buick Regal Base 305/5 V8
1986 - 1990 Chevrolet Caprice 305/5 V8
1985 - 1987 Oldsmobile Cutlass Supreme 305/5 V8

Specs:

Brand ACCEL
Emission Code 2
GAP .035"
Heat Range 4
Hex Size 5/8"
Length Shorty
Material Copper
Product Type Spark Plug
Projected Tip Yes
Qty 4
Reach .750"
Resistor Yes
Seat Type Gasket (Flat)
Style Copper Core
Thread Size 14mm
Weight 4.2
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 88839433672

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OutdoorMerican
Lake Worth, US
★★★★★ 5
Best I’ve used in 40yrs
Color: A - Magic Mint (Pack of 1)
Fast shipping Quality product Great results No after taste
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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ODemi
Louisville, US
★★★★★ 5
Very pleasant nano hydroxyapatite toothpaste.
Color: A - Magic Mint (Pack of 3)
Bought this new nano hydroxyapatite toothpaste free of fluoride. This is a new technology toothpaste that reinforces enamel. The Mint taste is very pleasant.
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Reviewed in the United States on May 20, 2026
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Clashmore
Cuba, US
★★★★★ 4
Pineapple and papaya
Color: A - Magic Mint (Pack of 3), Color: A - Magic Mint (Pack of 3)
I like it okay. I will use all of it but I am unsure if I will buy it again. It foams very little. I feel like I use more than I do with other pastes/gels. My mouth feels clean without having that too minty/medicinal taste from traditional flouride pastes. It comes out of the tube easy and sticks to my brush. I didn’t know until after I purchased it that there is papaya and pineapple extracts. There IS a photo in the product description that says this and I neglected to click through them all. I have two members in my household that are allergic to those ingredients so I have not had them try it. The only taste is a mild mint though. I think the whitening effects of nanohydroxyapatite pastes is much better than other popular brands that boast “whitening.” My teeth simply look whiter and shiny.
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Reviewed in the United States on September 22, 2025
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JOHN V. PENA
Alexandria, US
★★★★★ 5
GREAT CHOICE !!!
Color: A - Magic Mint (Pack of 1)
Definitely works as discribed helped with tooth sensitivity active ingredients help whiten and strengthen tooth enamel. I alternate 3 X a week woth normal Fluoride toothpastes and use this 2X a week. Total game changer
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Reviewed in the United States on May 21, 2026
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Tiywilli
Phoenix, US
★★★★★ 5
Perfect
Color: A - Magic Mint (Pack of 3)
This is the only toothpaste I use now. It makes my teeth look great, tastes great & does exactly as intended.
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Reviewed in the United States on June 2, 2026

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