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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
NOS Black T7075 aluminum 4AN-660 Bottle Nut Adapter - 16221NOSOverview: NOS bottle nut adapters allow you to connect your nitrous bottle to various sizes of AN braided lines for easy plumbing. This CNC machined 7075 aluminum bottle nut offers light weight with high strength and durability. Features: Made from 7075 aluminum for high strength and durability Black anodized finish for great looks and corrosion resistance Fits 660 style bottle valves Radius exit for maximum flow Lighter weight versus chrome plated
Overview:
NOS bottle nut adapters allow you to connect your nitrous bottle to various sizes of AN braided lines for easy plumbing. This CNC machined 7075 aluminum bottle nut offers light weight with high strength and durability.
Features:
- Made from 7075 aluminum for high strength and durability
- Black anodized finish for great looks and corrosion resistance
- Fits 660-style bottle valves
- Radius exit for maximum flow
- Lighter weight versus chrome plated bottle nuts
- Available in -4, -6 & -8 AN sizes
- CGA #660 Internal Threads
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| A Side | Type 660 |
|---|---|
| Adapter AN Size ( B ) | 4 AN MALE |
| Adapter Size ( A ) | 1 inch |
| Adapter Size ( B ) | -4 |
| B Side | 4AN |
| Brand | NOS |
| Color | Black |
| Emission Code | 4 |
| Finish | Anodized Black |
| Fitting Attachment 1 | Female Threads |
| Fitting Attachment 2 | Male Threads |
| Material | 7075 Aluminum |
| Product Type | Nitrous Bottle Nut Adapter |
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
4.0 ★★★★★
Based on 1730 reviews
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Product Reviews
★★★★★ 4
Cute and comfortable!
Size: 6.5, Color: Chestnut
These are cute and surprisingly comfortable! My arches feel supported and the soles don’t feel as block-like as other platform style sandals!
Things to note:
The footbed liner is not made of suede and is a little slippery. It’s like a neoprene liner which was unexpected for an Ugg shoe.
Also, I only intend to wear these sandals as slides (a la Birkenstocks) so the “adjustable” Velcro strap over the top part of the foot seems useless. It doesn’t snug the top down at all, functionally speaking it is only to wear around the back of the ankle. Maybe this matters to someone thinking they could tighten the top down a bit. The ankle strap is comfortable but could be a bit
longer.
Overall they are a cute option to the platform Birks that are very uncomfortable imo. Love the options to order half sizes. I’m usually a 6 in Ugg boots but ordered my regular shoe size 6.5 and they fit well. My heel would be at the very end of my sandal
if I sized down. True to size. Keeping and will order in another color!
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Reviewed in the United States on May 28, 2025
★★★★★ 5
Comfy
The most comfortable Sandals I own!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
More comfortable than flats!
Size: 8.5, Color: Bay Fog
I love these sandals! They run true to size, and they’re sooo comfortable. I was worried about getting fakes, but these were the real deal. The color is lovely (light purple). The foot bed can get dirty, but I find them to wash up nicely (by hand, not machine). I have purchased two more colors since! So much better than flats!
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Reviewed in the United States on November 9, 2025
★★★★★ 5
Comfy dual-mode sandals
Cute, quite comfy to walk in and love the support of the heel strap! It is not as comfy if using in slipper mode because the straps don’t keep your foot tight enough. I am usually a 8.5 but it runs slightly small so I switched up to a 9.
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Reviewed in the United States on June 25, 2025
★★★★★ 5
Comfy
Size: 8, Color: Dense Smoke
These are super comfortable and I get tons of compliments on them.
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Reviewed in the United States on June 4, 2026