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Description
Holley EFI Benchtop Harness 558-127Firmware Updating Dash Configuration ECU Testing Features: Terminated connectors for several EFI inputs1 Included power switch allows for a quick ? install? on your test bench2 Great for ECU diagnostics that do not require a running engine, firmware updates, or 7? dash calibrations3 Specs: Brand Holley EFI Emission Code 6 Product Type Harness Warning California Proposition 65 Application: Year Make Model Submodel
Firmware Updating - Dash Configuration - ECU Testing
Features:
- Terminated connectors for several EFI inputs1
- Included power switch allows for a quick ?install? on your test bench2
- Great for ECU diagnostics that do not require a running engine, firmware updates, or 7? dash calibrations3
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 6 |
| Product Type | Harness |
| 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
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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 29 reviews
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Product Reviews
★★★★★ 5
USE IT TO CLEAN MY FLOORS
Scent: Orange Blossom, Size: 16 Fl Oz (Pack of 1)
LEAVES EVERYYTHING SUPER CLEAN ORANGE BLOSSOM SCENT AND NUETRALIZES THE SCENE. AWESOME PRODUCT. GENTLE NATURAL PRODUCT. A LITTLE GOES A LONG WAY. WORTH EVERY PENNY. VERY VERSATILE USE IT TO CLEAN MY FLOORS.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Smells great and cleans well.
Scent: Orange Blossom, Size: 16 Fl Oz (Pack of 1)
This is a really good cleaner! It smells great and cuts through any kind of messes. I use it everywhere around the house because it’s so effective. Definitely recommend this.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Smells amazing
Scent: Coconut Leaf, Size: 16 Fl Oz (Pack of 1)
I absolutely love this cleaner! It is good for my sensitive nose, it gets the job done and leaves a pleasant beachy coconut smell behind. So great for my kitten as well!
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Reviewed in the United States on May 1, 2026
★★★★★ 5
The clean smell is fantastic
Scent: Coconut Leaf, Size: 16 Fl Oz (Pack of 1)
I love Mrs MEYER’S Products they clean and smell fantastic!! I couldn’t ask for anything better.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Works well with a pleasant smell
Scent: Coconut Leaf, Size: 16 Fl Oz (Pack of 1)
Works well pleasant smell
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Reviewed in the United States on May 11, 2026