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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
7-Inch 12-1X Crank Trigger Kit, SBC, Hall Effect 556-171For Small Block Chevrolet Features: Most accurate way to trigger your electronic fuel injection (EFI), can be installed as 12 1 or 12x1 Powerful magnets embedded in a 3 8 inch thick billet 6061 T6 aluminum trigger wheel1 3 wire Hall Effect Sensor that is not easily susceptible to EMI RFI Interference1 Engine specific kits include a direct bolt on billet aluminum pick up bracket1 Rigid mounting that will not flex and cause timing fluctuation1 Easy to
For Small Block Chevrolet
Features:
- Most accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x1
- Powerful magnets embedded in a 3/8-inch thick billet 6061-T6 aluminum trigger wheel1
- 3-wire Hall-Effect Sensor that is not easily susceptible to EMI/RFI Interference1
- Engine specific kits include a direct bolt-on billet aluminum pick up bracket1
- Rigid mounting that will not flex and cause timing fluctuation1
- Easy to install much like traditional MSD Crank Trigger Kits 1
- Included installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup1
Specs:
| Brand | Holley EFI |
|---|---|
| Category Filter | Fuel Injection - EFI |
| Clearance Category | Fuel Injection - EFI |
| Color | Silver |
| Diameter | 7-inch |
| Emission Code | 4 |
| Make | Small Block Chevrolet |
| Product Type | Crank Trigger Kit |
| Sensor Type | Hall Effect |
| Warning | California Proposition 65 |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
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
4.3 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 4
Worth The Price
Size: Medium, Color: Black
Arrived on time with no issues. Quality was fine for the low price. I needed some summer shirts after losing weight and did not want to spend a lot. Solid purchase for the price, so I ordered several. Sixty-five pounds later, they served their purpose.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Fit well at my size
Size: XX-Large, Color: White
Fit well at my size. Good shirt
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Good
Size: XX-Large, Color: Black
Good material and true to size
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Great Quality
Size: Large, Color: Light Blue
Very nice
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Reviewed in the United States on April 1, 2026
★★★★★ 3
Nice shirt, odd fit
Size: X-Large, Color: Dark Grey, Size: X-Large, Color: Dark Grey
This shirt looks and feels very nice, and there's no weird stitching or loose threads, but the fit was a little off. It was a little short on my husband who is 6'1", but if he stands with his hands down it doesn't really LOOK too short. It's when he raises his arms for anything that it seems weirdly tight across his the chest and it pulls the hem of the shirt up quite a lot. This could just be a body type thing, but he doesn't have that issue in other shirts the same size and style. It's a shame because the shirt itself seems really nice.
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Reviewed in the United States on February 7, 2026