SKU: 21171470086

HP Copper Spark Plug - Shorty - 0416S-4

Sale price$44.96 Regular price$49.95
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Description

HP Copper Spark Plug - Shorty - 0416S-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
1972 Plymouth Fury Sport Suburban 440/7.2 V8
1972 Plymouth Fury Suburban 440/7.2 V8
1973 Plymouth Fury 440/7.2 V8
1972 - 1973 Plymouth Fury I Base 440/7.2 V8
1973 Plymouth Gran Fury Base 440/7.2 V8
1969 Plymouth GTX 440/7.2 V8
1970 - 1971 Plymouth Road Runner 440/7.2 V8
1970 - 1971 Dodge Charger 500 440/7.2 V8
1971 Dodge Charger Super Bee 440/7.2 V8
1972 Dodge Charger 440/7.2 V8
1970 Dodge Coronet Base 440/7.2 V8
1970 Dodge Coronet Deluxe 440/7.2 V8
1970 Dodge Coronet R/T 440/7.2 V8
1970 Dodge Coronet 500 440/7.2 V8
1970 Dodge Coronet 440 440/7.2 V8
1970 Dodge Coronet Super Bee 440/7.2 V8
1970 Dodge Monaco 440/7.2 V8
1970 - 1973 Dodge Polara 440/7.2 V8
1972 Plymouth Fury Custom Suburban 440/7.2 V8
1970 Dodge Challenger Base 440/7.2 V8
1970 Dodge Challenger R/T 440/7.2 V8
1970 - 1971 Dodge Charger Base 440/7.2 V8
1970 - 1971 Dodge Charger R/T 440/7.2 V8
1971 Dodge Charger Special Edition 440/7.2 V8
1965 - 1966 Buick Skylark 401/6.6 V8
1974 Plymouth Fury I Base 400/6.6 V8
1974 Dodge Charger 400/6.6 V8
1974 Dodge Coronet Base 400/6.6 V8
1974 Dodge Coronet Custom 400/6.6 V8
1974 Dodge Coronet Crestwood 400/6.6 V8
1968 - 1969 Oldsmobile Cutlass 350/5.7 V8
1972 - 1973 Oldsmobile Cutlass Supreme 350/5.7 V8
1969 Oldsmobile Delta 88 Base 350/5.7 V8
1969 Oldsmobile Delta 88 Custom 350/5.7 V8
1970 - 1973 Oldsmobile Delta 88 350/5.7 V8
1969 Oldsmobile F85 350/5.7 V8
1969 Oldsmobile Vista Cruiser 350/5.7 V8
1987 Chevrolet Camaro Iroc-Z 350/5.7 V8
1986 - 1987 Chevrolet Corvette 350/5.7 V8
1970 GMC Jimmy 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
1988 Oldsmobile Cutlass Supreme Classic Brougham 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
1968 - 1969 Chrysler 300
1965 - 1966 Buick Gran Sport
1968 - 1969 Chrysler New Yorker

Specs:

Brand ACCEL
Emission Code 2
GAP .035"
Heat Range 6
Hex Size 5/8"
Length Shorty
Product Type Spark Plug
Projected Tip Yes
Qty 4
Reach .750"
Resistor Yes
Seat Type Gasket (Flat)
Style Copper Core
Thread Size 14mm
Weight 4.75
Shipping Notes
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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]
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SKU: 21171470086

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4.1 ★★★★★
Based on 12 reviews
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K
Kevin Barr
Waukegan, US
★★★★★ 5
So premium I can't even test the quality
edit- after about six weeks of driving through various conditions I can say that the air quality this filter produces is excellent., removing all smoggy odor. There is a minor soapy smell that is not offensive, just unusual. So I am very pleased with this item. original review- This really seems like a premium upgrade compared to the budget filters I normally buy. Unfortunately I live in a hot and dry climate (no humidity buildup to cause musty or sour odors and AC always running which dries the air also) and I do not smoke so I never have any odor problems in my vehicle to test the charcoal feature with. I also am not prone to dust allergies so I don't know how helpful the HEPA feature is. If I get stuck in traffic in a smoggy area or behind an especially smoggy vehicle I will switch to fresh air mode to learn if the charcoal feature helps and update this review. There is no paperwork in the box or arrows printed on the filter to determine which way to insert it. I am assuming the airflow path is downward and should pass through the paper side first, so I installed the paper side up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
D
D Radcliffe
Battle Creek, US
★★★★★ 5
It's a fit
This was a good fit for my 2010 Camry. Way nicer than the air filter I had in there before. I don't know what all those charcoal things do but it makes me feel like my car will have better air than the rest of of life. All the packaging and labels were Chinese, so I had to take my best guess about which way the air was supposed to flow. Other than that it was pretty easy to install. Just stick it in the hole. Seems to work well, I haven't noticed any new noises. Seems like a higher end filter. Hopefully it lasts the ten years before I change it next
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
D
D. Porrey
Louisville, US
★★★★★ 5
Very Different, But Works Well
This is built much different than the others. It has a foam seal around the edges. The filter portion is standard, but the carbon activated material is a setoff beads suspended between a screen a honeycomb structure. There is air freshener built-in to help with the smell in the car. Fits well in my 2015 RAV4. Just as easy to install as any other filter. The price is on the high side so with this one I am hoping to get at least one year of use from it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2025
P
Placeholder
Pawtucket, US
★★★★★ 4
Well-Made Carbon Cabin FIlter
I love the honeycomb carbon filter on this cabin filter. It looks like it will do an excellent job cleaning the air in my car. It came in a cardboard box and was easy to install and fit my Toyota well. I would have appreciated some arrows on it, like other filters come with, to let me know I was inserting it correctly. I just followed the example of the one already in my car. If you accidentally take that one out first, you may not remember which side goes where. So, my improvement would be arrows on the filter itself. Otherwise, the airflow seems great, it functions well and seems to be a great quality!
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Reviewed in the United States on November 14, 2025
A
Amazon Customer
Pawtucket, US
★★★★★ 5
Use activated carbon to clean the air naturally!
This is a serious air filter with activated carbon inside of it and I'm here for it. I use little activated carbon bags in my car already as an air freshener because I hate those fake chemical scents from the little trees or from the car wash. The chemicals in those fake scents give me migraines. I absolutely love the idea of putting the active carbon in the cabin air filter itself to clean the air. This fits prefecture in my 2017 toyota prius v. It was just a easy to install as any purge cabin air filter. The hardest part is opening all the parts of the glove box to get the old one out. This filter seems sturdier than my last one and it's a good value for the money.
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Reviewed in the United States on November 11, 2025

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