Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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For Your Every Summer RSVP, with Code: SUMMER15
Description
HP Copper Spark Plug - 8160C1Overview: ACCEL HP 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 HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for
Overview:
ACCEL HP 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 HP 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 HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.
Features:
- One Piece Design - Won't break off in head during removal like two piece designs
- The Copper core is a better conductor than Iridium or Platinum plugs
- Copper dissipates heat much better than other materials
- "C" - Cut Design un-shrouds the spark kernel for a better burn
- Unlike Iridium or Platinum plugs, the ACCEL HP plugs are gapable
- Machine rolled threads for precise thread engagement
- One step colder than stock
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 2005 - 2008 | Ford | F-350 Super Duty | Lariat | 330/5.4 V8 |
| 2005 - 2008 | Ford | Mustang | GT | 281/4.6 V8 |
| 2004 - 2008 | Ford | F-150 | XL | 330/5.4 V8 |
| 2004 - 2008 | Ford | F-150 | XLT | 330/5.4 V8 |
| 2006 - 2008 | Ford | F-150 | Harley-Davidson Edition | 330/5.4 V8 |
| 2005 - 2008 | Ford | F-150 | King Ranch | 330/5.4 V8 |
| 2004 - 2008 | Ford | F-150 | Lariat | 330/5.4 V8 |
| 2004 - 2008 | Ford | F-150 | FX4 | 330/5.4 V8 |
| 2007 - 2008 | Ford | Explorer Sport Trac | 281/4.6 V8 | |
| 2007 - 2008 | Ford | Mustang | Shelby GT | 281/4.6 V8 |
| 2005 - 2008 | Ford | Expedition | / | |
| 2005 - 2008 | Ford | F-250 Super Duty | XL | 330/5.4 V8 |
| 2005 - 2008 | Ford | F-250 Super Duty | XLT | 330/5.4 V8 |
| 2005 - 2008 | Ford | F-250 Super Duty | King Ranch | 330/5.4 V8 |
| 2005 - 2008 | Ford | F-250 Super Duty | Lariat | 330/5.4 V8 |
| 2005 - 2008 | Ford | F-350 Super Duty | XL | 330/5.4 V8 |
| 2005 - 2008 | Ford | F-350 Super Duty | XLT | 330/5.4 V8 |
| 2005 - 2008 | Ford | F-350 Super Duty | King Ranch | 330/5.4 V8 |
| 2007 - 2008 | Ford | F-150 | FX2 | 330/5.4 V8 |
| 2007 - 2008 | Ford | Explorer | 281/4.6 V8 | |
| 2008 | Ford | F-250 Super Duty | FX4 | 330/5.4 V8 |
| 2008 | Ford | F-350 Super Duty | FX4 | 330/5.4 V8 |
| 2008 | Ford | Mustang | Bullitt | 281/4.6 V8 |
| 2008 | Ford | F-150 | Limited | 330/5.4 V8 |
| 2008 | Ford | F-150 | XTR | 330/5.4 V8 |
| 2008 | Ford | F-150 | THE 60TH ANNIVERSARY EDITION | 330/5.4 V8 |
| 2006 | Ford | Explorer | Limited | 281/4.6 V8 |
| 2006 | Ford | Explorer | Eddie Bauer | 281/4.6 V8 |
| 2006 | Ford | Explorer | XLT | 281/4.6 V8 |
Specs:
| Brand | ACCEL |
|---|---|
| Emission Code | 2 |
| GAP | n/a |
| Heat Range | 1 Step Colder |
| Hex Size | 9/16" |
| Length | Standard |
| Product Type | Spark Plug |
| Projected Tip | No |
| Qty | 8 |
| Reach | .8125" |
| Resistor | Yes |
| Seat Type | Tapered |
| Style | Copper Core |
| Thread Pitch | 1.25mm |
| Thread Size | 16mm |
| Torque Specification | 20-25 lb.ft |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 1077 reviews
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Product Reviews
★★★★★ 5
Received giftcard money to replace my plan-protected malfunctioning motherboard
I've been subscribing to the Asurion protection plan for a while. Recently, an Asus Prime PC motherboard I had bought a few months ago on Amazon stopped working well. I ended up considering filing a claim with Asurion to see if they would either fix/replace it or issue the purchase price money, so I could buy the failed electronics replacement component again for my custom-built PC. I went to the protection plan's website and started the claim filing process but couldn't find the category my failed component would be under in order to select it from the drop-down list. I ended up messaging the live customer service. The chat messaging was somewhat slow, the agent told me they were experiencing some communication delays throughout their systems. Ultimately, the agent was very kind and understanding, and completed the claim filing process for me on her side by asking me to provide the necessary info such as the item's product name, date of purchase, price before taxes, etc. I received a printable UPS shipping label in the email, printed it, and returned the item in the mail. Approximately 2 days later, I received an Amazon giftcard code in the email with the dollar amount equal to the item's price before the sales tax. Then I redeemed the giftcard code on the Amazon page and proceeded to apply the giftcard money to my next purchase of a replacement Asus prime motherboard, and it all worked out successfully. Therefore, I had no issues with the protection plan service and recommend it to others.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Fast and easy but I dont trust the process to be fully automated.
The process was very smooth and fairly quick. The only challenge I had was that the CLAIM status showed complete but I had to manually go look up the status. There was no email or notification it was closed. After manually checking the status, I called customer support and they said since I called in, they would process the payout. I wonder if I didnt call in if they would have processed it? Also, the phone rep said they would issue me a amazon egift card but then the next day I received a email saying they mailed out the payout. Very poor communication but so far the process was easy and fast.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Good protection, easy process
First time filing a claim. Super easy and fast. Nice to have have protection and a smooth claims process when the unfortunate happens..
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Ease of making a claim and quick return time for claim.
Very easy to work with.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Easy Claims Process
It is not a long complicated process to file and resolve a claim. Be warned--sometimes they will want you to send back the defective or damaged product, even if it's not worth the shipping ---they pay. Overall worth the investment though.
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Reviewed in the United States on March 22, 2026