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Description
Fuel Rail Adapter Fitting -6AN to GM Quick-ConnectFuel Rail Adapter Fitting 6AN to GM Quick Connect LS Hi Flow Holley EFI Fuel Rails Same as 534 209, but also includes (6') braided hose, (4) 90?? and (2) straight 6 hose ends Overview LS Hi Flow Holley EFI Fuel Rails Same as 534 209, but also includes (6') braided hose, (4) 90?? and (2) straight 6 hose ends Note if this product is to be used with aftermarket (tall) EV1 performance injectors: LS2, LS3, and L99 applications will require taller brackets
Fuel Rail Adapter Fitting -6AN to GM Quick-ConnectLS Hi-Flow Holley EFI Fuel Rails - Same as 534-209, but also includes (6') braided hose, (4) 90?? and (2) straight -6 hose ends
Overview
LS Hi-Flow Holley EFI Fuel Rails - Same as 534-209, but also includes (6') braided hose, (4) 90?? and (2) straight -6 hose ends
Note if this product is to be used with aftermarket (tall) EV1 performance injectors: LS2, LS3, and L99 applications will require taller brackets and adapter O-rings to be used with EV1 injectors. Holley part number 534-212 will have these required parts. LS1 and LS6 application will work with EV1 injectors without any additional parts. Holley part number 534-211 allows easy connection to factory fuel lines.
Details:
- Color: Black
- Hose Size: 6 AN
- Material: Aluminum
- Tube Size: 3/8"
Links
Instruction Sheet
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.5 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Very good for breath but caused some sour mouth
I have dry mouth which makes me prone to bad breath. I’ve experimented with chewing these before bed (after brushing) or in the morning (also after brushing). I tested my breath using a cloth mask and also did “blank” tests on days when I did not use the product. Chewing before bed greatly reduced morning breath but left me with some sour mouth, which makes me worry a bit about tooth decay. I’ve switched to taking in the morning and have been happy with the results.
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Reviewed in the United States on October 6, 2024
★★★★★ 5
My experience
Loved this product. It worked from day 1. Tastes good. Highly recommended
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Reviewed in the United States on March 18, 2026
★★★★★ 3
Lips & mouth sore?
Mouth and lips became sensitive and sore after using this product 2x per day for 3 days. Maybe I’m allergic to one of the ingredients? Don’t know. It’s day 3 of soreness and waiting for it to subside.
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Reviewed in the United States on December 1, 2025
★★★★★ 1
Doesn’t work
I’ve tried to for three weeks and I’ve tested and it does t work. I can taste this mint in my mouth and it still smells funky. I’ve had customers and employees tell me my breath smells. I don’t drink coffeee and I brush my teeth for 10mins straight every morning and night and I also use mouth wash and I use three tabs throughout the day and it does nothing for me.
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Reviewed in the United States on August 31, 2023
★★★★★ 5
Recommended by my dental hygienist
These probiotics help maintain a healthy balance of bacteria in your mouth, which already improved my gum health and reduced bad breath. This product was recommended by my dental hygienist.
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Reviewed in the United States on July 19, 2025