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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Holley EFI Standalone Air/Fuel Wideband 02 Gauge Kit - 534-215Overview: Holley EFI fully standalone 2 1 16" Air Fuel Wideband O2 Gauge Kit. This highly accurate and feature packed unit is designed specifically for use with all EFI or carbureted systems and available in both black and white face versions. Features: Completely standalone with easy to read analog dial Great for EFI or carbureted applications Includes Bosch LSU 4. 9 wideband O2 sensor which is compatible with all fuel types (Unleaded, Leaded, E85,
Overview:
Holley EFI fully standalone 2-1/16" Air/Fuel Wideband O2 Gauge Kit. This highly accurate and feature packed unit is designed specifically for use with all EFI or carbureted systems and available in both black and white face versions.
Features:
- Completely standalone with easy-to-read analog dial - Great for EFI or carbureted applications
- Includes Bosch LSU 4.9 wideband O2 sensor which is compatible with all fuel types (Unleaded, Leaded, E85, Diesel, or Methanol)
- Gauge reads in gasoline scale only
- Slim-style mounting requires very little dash space for installation
- 270° sweep pointer from 6 to 3 o’clock makes gauge easy to read at a glance
- Internal microprocessor controls the pointer movement to ensure accurate movement in street, off road, and racing conditions
- Adjustable LED warning light allows user to set both low and high trigger points
- Peak recall button allows user to view min/max gauge readings
- Gauge includes a 5 ft. 6-pin weathertight sensor harness and 4 ft. power/ground/lighting harness allowing for flexible mounting locations
- Spin lock ring threads to back of gauge case for simple and secure gauge mounting
- CNC machined billet aluminum bezels with anodized finish – Bezels are threaded for easy replacement
- Multiple bezel options available separately – User can customize the gauge to their preference
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 5 |
| Face Color | Black |
| Gauge Type | Air/Fuel Ratio |
| Product Type | Gauge |
| Size | 2-1/16" |
| Style | Analog Standalone |
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
4.4 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Best liner socks EVER
Size: Medium, Color: (348) Silica Green / Silica Green / Hydro Green
I have them in every color and used to get them from Sams, but they stopped selling them and I was lucky to find them on Amazon. Got all colors again. They stay, it's all I'm gonna say! And don't show in any of my tennis shoes. Absolutely love them and wear them until they get holes. They last a LONG time too. They're on the thin side and my foot loves them because they tend to get hot. There's no shrinking, they wash great with exception of the white ones I couldn't manage to keep white - they turned a bit greyish.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
Great socks
Size: Medium, Color: Pink - 647
Well-made and comfortable to wear. Great for golf and other outdoor activities. Like them because they do not show above shoes.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
These ACTUALLY stay put all day long - I was skeptical, but am so glad I took a chance on these
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I was so skeptical about whether these would stay on my feet all day without sliding down into my shoe - I’ve tried so many socks in the past with the silicone strip on the heel which failed.
I’ve owned these for a couple months now and they have never slipped down - they stay put all day! I love the variety of colors to choose from, and the value per pack is great since six pairs come per pack (I thought it was only three when I first purchased and was pleasantly surprised by the additional pairs). They also have perfect thickness - not too warm to wear during the summer months with sneakers; I live in a tropical climate, though, so I’m not sure how they will do in cooler climates. I’ve washed each pair once or twice and the color and quality of the silicone has stayed so far (knock on wood).
Overall: high recommend based on my experience so far!
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Reviewed in the United States on September 13, 2025
★★★★★ 5
Great fit!
Size: Medium, Color: (403) Washed Navy / Washed Navy / Blue Smoke
Great quality!
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Reviewed in the United States on May 15, 2026
★★★★★ 5
My favorite socks
Size: Medium, Color: (659) Fuchsia Dusk / Fuchsia Dusk / Tourmaline Pink
Very comfortable. True to size. Moisture wicking
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Reviewed in the United States on April 25, 2026