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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
For Your Every Summer RSVP, with Code: SUMMER15
Description
8-Inch 12-1X Crank Trigger Kit, BBC, Hall Effect8 Inch 12 1X Crank Trigger Kit, BBC, Hall Effect Black, 8 Pack Overview These Holley EFI Smart Coils are a bolt in ignition upgrade for your late model HEMI or Coyote engine. Here's the difference over a stock coil; they produce more spark energy while consuming less power without sacrificing voltage output. This means you get hotter spark at the plug to burn the maximum amount of fuel in each cylinder while using less power from your electrical
8-Inch 12-1X Crank Trigger Kit, BBC, Hall EffectBlack, 8-Pack
Overview
These Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Here's the difference over a stock coil; they produce more spark energy while consuming less power without sacrificing voltage output. This means you get hotter spark at the plug to burn the maximum amount of fuel in each cylinder while using less power from your electrical system. For Hemi combinations currently using Holley EFI or Terminator X, use Smart Coil Ignition Harnesses 558-312 Coil Extension Harnesses 558-326 for a plug and play solution.
Features:
- Most accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x
- Powerful magnets embedded in a 3/8-inch thick billet 6061-T6 aluminum trigger wheel
- 3-wire Hall-Effect Sensor that is not easily susceptible to EMI/RFI Interference
- Engine specific kits include a direct bolt-on billet aluminum pick up bracket
- Rigid mounting that will not flex and cause timing fluctuation
- Easy to install much like traditional MSD Crank Trigger Kits
- Included installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup
Details:
- Color: Silver
- Diameter: 8-inch
- Make: Big Block Chevrolet
- Sensor Type: Hall Effect
Links
Instruction Sheet
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
4.0 ★★★★★
Based on 2024 reviews
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Product Reviews
★★★★★ 5
Great vest for a great price!
This vest is more slim fitting, stylish, & flattering than many vests. It fits as expected, but it is adjustable in the back, so you do have some wiggle room to tighten & loosen it if you’re unsure about the size. My son wore this vest to homecoming. He is 5’ 10” & 150 lbs, & the size small was a good fit.
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Reviewed in the United States on October 20, 2022
★★★★★ 5
Great Quality Vest
Great quality vest versatile for all occasions. I personally felt it ran a bit tight (I ordered a large and felt like I was sucking in a bit the whole time) but I think an XL would have been too big. Overall impressed and happy with purchase.
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Reviewed in the United States on January 2, 2025
★★★★★ 3
BUTTONS LIKE A SMALLER SIZE. GOOD QUALITY.
DESIGN IS EXCELLENT. QUALITY IS FINE. I WEAR A LARGE, BUT THIS VEST, IN A LARGE, DID NOT ALLOW ME TO BUTTON ... AS IF IT IS A MEDIUM FIT. WILL RETURN, BUT IT IS A VERY GOOD VEST OTHERWISE.
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Reviewed in the United States on September 23, 2025
★★★★★ 5
Well made and looks great.
This vest fits well and is well made. It feels tailored. I feel great and look good wearing it.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Looks great feels great fits great incredible price
Looks great feels great fits great incredible price
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Reviewed in the United States on December 2, 2025