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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
Holley Sniper EFI HyperSpark CD Ignition Boxes 556-151Sniper Hyperspark EFI Ignition Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing HyperSpark Ignition, from Sniper EFI. The complete system consists of a CD Ignition Box, Billet distributor with Hall effect crank signal sensor, an ignition coil, and complete wiring harness ready to plug and play with your Sniper EFI System Features: Designed to work with Sniper EFI
Sniper Hyperspark EFI Ignition
Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing HyperSpark Ignition, from Sniper EFI. The complete system consists of a CD Ignition Box, Billet distributor with Hall effect crank signal sensor, an ignition coil, and complete wiring harness ready to plug and play with your Sniper EFI System
Features:
- Designed to work with Sniper EFI – Minimal wiring required.
- 135mJ of spark energy when used with the HyperSpark Ignition coil, ensures complete combustion
- HyperSpark CD Ignition box is seal and powder coated to be installed in the harshest of locations.
- External LED on Hyperspark CD Ignition box helps verify 12v, cranking RPM, and low battery voltage.
- Very low key off current (<150uA), so you can rest easy that your battery won’t drain during storage periods.
Application
- Universal
Specs
| Brand | Holley Sniper EFI |
|---|---|
| Emission Code | 4 |
| Product Type | Ignition Boxes |
| Part Number | 556-151 |
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
4.6 ★★★★★
Based on 94 reviews
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Product Reviews
★★★★★ 5
Good quality
Size: Large, Color: (400) Royal / White / Mod Gray
To big! I am female size 9 and Amazon was recommending for me size L.
Yes, my socks is wearing my boyfriend. I need to buy smaller size
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Reviewed in the United States on October 13, 2025
★★★★★ 5
Great Socks.
Color: (002) Black / Black / Halo Gray, Size: Large
These are awesome and have become my favorite socks to have for everyday wear. I have since bought the hightop version as well and there are just as equally great. They fit almost like compression socks. Color does fade a bit after repeated washing but not enough to make a big difference in appearance. They have lasted for a long time and still going. They have lots of cushion which makes it very comfortable to wear.
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Great Socks
Color: (001) Black / Black / Castlerock, Size: Large
I keep ordering these over and over again. They fit well, and are soft and comfortable. My feet don't sweat like crazy while wearing them. The cupped heel makes them fit even better. They hold up to everything from everyday use to active lifestyles.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Talla perfecta
Color: (001) Black / Black / Castlerock, Size: Large
Excelente producto
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Very comfy!
Color: (100) White / White / Halo Gray, Size: Medium
Very soft, fits well.
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Reviewed in the United States on April 28, 2026