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Description
Holley EFI Transmission Harness - TKO 558-482Terminator X Max ECUs on V3 Build 100 or later Holley EFI V6 Build 300 or later Features: Specs: Brand Holley EFI Connector Quantity 4 Emission Code 3 Grade Type Performance Harness Application GM Harness Type Transmission Product Type Transmission Harness Warning California Proposition 65 Application: Year Make Model Submodel
Terminator X Max ECUs on V3 Build 100 or later - Holley EFI V6 Build 300 or later
Features:
Specs:
| Brand | Holley EFI |
|---|---|
| Connector Quantity | 4 |
| Emission Code | 3 |
| Grade Type | Performance |
| Harness Application | GM |
| Harness Type | Transmission |
| Product Type | Transmission 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.
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4.1 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
It's a thing...
Flavor Name: Vanilla, Size: 14 Servings (Pack of 1)
I am probably the most skeptical person when it comes to supplements. I’ve tried so many over the years and honestly… most of them felt like a waste of money or just hype.
But I have to say—this combo has completely surprised me.
I’ve been consistently using Thorne protein and creatine, and within a few weeks I started noticing real changes. Not just how I feel, but how I look. My shoulders especially are looking more defined, and I feel stronger in my workouts without feeling jittery or weird like some products can make you feel.
What really stands out to me is how clean and simple it is. No bloating, no heavy feeling, no unnecessary extras—just something that actually supports what I’m already doing.
I also love that it fits easily into my routine. I take my creatine with my morning coffee (super easy habit), and I’ve been doing a protein shake after workouts which has helped a lot with recovery and keeping me on track nutritionally.
I’m currently in a calorie deficit getting ready for a trip, and this has honestly made it feel doable without feeling depleted.
If you’re someone like me who is hesitant about supplements, I’d say this is the first time I’ve actually felt like something made a noticeable difference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
★★★★★ 4
Good Quality
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
It is good quality but too sweet for my taste.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
I didn’t know I could truly love a protein powder…
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
The flavor and consistency are unmatched and it was actually easy to digest which is something I’ve never experienced, and is crazy for me bc I have serious issues with whey causing bloating and had actually given up on it completely. 100/10 would recommend JUST bc it’s delicious, the fact that it’s such high quality at a reasonable price is just the cherry on top.
I ordered the vanilla to try first and just mixed with cold water using a frother/whisk thing just to get a gauge of taste and consistency and I would actually drink it that way, which I never ever imagined doing with protein lol- later I added it to a smoothie and it was also delicious, almost could not taste it over blueberries but the subtle and delicious vanilla flavor was there.
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Reviewed in the United States on June 7, 2025
★★★★★ 5
Pleasant taste, nice texture.
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
Works well in my afternoon smoothie. Pleasant vanilla taste.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Sublingual works well for melatonin!
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Sublingual seems to be the way to go with melatonin. It works well for me. It’s great this company offers a variety of doses. I was doing 10mg but I learned it might not good to stay on that high a dose for an extended period of time. So I switched to 5mg and it still works well.
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Reviewed in the United States on January 21, 2025
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