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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
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Description
Holley EFI Vacuum Manifold 534-52The Holley EFI Vacuum Manifold is an excellent vacuum or boost reference source. Features: Compatible with all transducers that utilize 1 8 NPT male threads and 7 8? or smaller body hex diameter 12 independent 1 8 NPT ports 2 6 ORB Ports Improve engine bay organization by mounting transducers and or vacuum lines all in one easy to reach location Ideal for engines that require multiple vacuum boost reference sources 4 mounting holes designed for the
The Holley EFI Vacuum Manifold is an excellent vacuum or boost reference source.
Features:
- Compatible with all transducers that utilize 1/8 NPT male threads and 7/8? or smaller body/hex diameter
- 12 independent 1/8 NPT ports
- 2 -6 ORB Ports
- Improve engine bay organization by mounting transducers and/or vacuum lines all in one easy to reach location
- Ideal for engines that require multiple vacuum/boost reference sources
- 4 mounting holes designed for the use of 5/16? socket head cap hardware for secure and robust mounting
- Crafted from 6061 Aluminum
- Anodized black for durability and laser etched with the Holley EFI logo
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 5 |
| Finish | Black |
| Inlet | 1/8 NPT |
| Inlet / Outlet Size | 9/16-18 Female O-Ring (AN 6) |
| Material | 6061 Aluminum |
| Product Type | Sensor Block |
| 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
4.5 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Legit Product.
Color: Style A：Pink
Looks like the image. Works well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
★★★★★ 5
Great item!
Color: Style A：Pink
Excellent item, easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
Works fine for me
Color: Style A：Pink
Everything worked as it should really happy with the fact that it came with a few sticky back tie downs to help keep the cable from swinging around. I'm hoping this one will last longer than my last one. ( Purchased from a different distributor.)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 1
It works, but wiring is bad
Color: Style A：Pink
It works, but is just another one that is an exposed main board that lights up. Edit: it recently had a wiring issue. I will have to buy another kind. These aren't working for me at all.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 5
Good product with good price
Color: Blue, Color: Blue
Very sharp and stylish. Super convenient and good price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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