Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Holley Single Plane EFI Intake - GM LS7-Black 300-269BKSingle Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads Black Finish Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads Black Finish NOTES: Includes fuel rails, mounting hardware, and O ring cylinder head mounting flange gaskets. The included fuel rails are designed to accept Bosch Style EV 1 or GM OE LS7 fuel injectors. Features: 2500 7000 RPM power band
Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads-Black Finish
Single Plane EFI LS Intake Manifold. Fits all GM LS Gen III engines equipped with LS7 cylinder heads-Black Finish
NOTES: Includes fuel rails, mounting hardware, and O-ring cylinder head mounting flange gaskets. The included fuel rails are designed to accept Bosch Style EV-1 or GM OE LS7 fuel injectors.
Features:
- 2500-7000 RPM power band
- 4150 Square bore flange
- Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
- Minimum carb flange height - fit in vehicles with minimum hood modifications
- Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS mild power adder applications
- Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality
- Weight - 11.5 lbs.
- Height (front) - 5.417" to the lifter valley cover flange at the engine block front flange and bellhousing flange
- Port size - 2.33" height x 1.27" wide
- Includes FKM o-ring intake to cylinder head gaskets
Specs:
| Basic Operating RPM Range | 2500-7000Revolutions per Minute |
|---|---|
| Brand | Holley |
| Carburetor Flange | Square/4150 |
| Carburetor Studs Included | No |
| Clearance Category | Air and Fuel Delivery |
| Color | Black |
| Construction | Cast |
| Discount Percentage | 26-50% |
| EGR Port | No |
| Emission Code | 3 |
| Engine | GM LS7 |
| Finish | Black |
| Flange Style | 4150 Square Bore |
| Front Height | 5.417 inch |
| Front Maximum Height | 5.417Inch |
| Fuel Injectors Included | No |
| Fuel Rail(s) Included | No |
| Fuel System Type | EFI |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Intake Port Gasket(s) Included | No |
| Manifold Type | Single Plane |
| Material | Aluminum |
| Nitrous Bung(s) Included | No |
| Plenum Finish | Black |
| Product Type | Intake Manifold |
| Rear Height | 5.417 inch |
| Rear Maximum Height | 5.417Inch |
| Recommended Use | Forced Induction |
| Removable Runners | No |
| RPM Power Band | 2500-7000 RPM |
| Sale Category | Air and Fuel Delivery |
| Single Or Dual Plane Type | Single Plane |
| Throttle Body Included | No |
| Warranty | Limited 90 Day |
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
4.4 ★★★★★
Based on 1560 reviews
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Product Reviews
★★★★★ 5
⭐ Amazon Essentials Linen‑Blend Wide Sleeve Shirt Review
Size: Medium, Color: Light Beige
Relaxed Fit • Adjustable Waist • Wide Sleeves • Black
This linen‑blend wide‑sleeve shirt is one of those effortless wardrobe staples that feels both relaxed and put‑together. The black color gives it a sleek, elevated look, while the adjustable waist lets you shape it to your style — loose and flowy or cinched and defined.
🌿 Fabric & Comfort
The linen‑blend material is lightweight, breathable, and perfect for warm weather or layering. It has that soft, airy feel that keeps you comfortable all day without looking wrinkled or sloppy. It’s the kind of top you can wear from errands to dinner and still feel polished.
✨ Fit & Style Details
Relaxed, easygoing silhouette
Wide sleeves that add movement and a modern touch
Adjustable waist tie for customizable shaping
Flattering length that works with jeans, shorts, or skirts
The wide sleeves give it a breezy, effortless vibe, while the waist tie adds just enough structure to keep it flattering on different body types.
🖤 Versatility
This shirt is incredibly easy to style. It works for:
Casual daytime outfits
Work‑from‑home comfort
Brunch or coffee dates
Minimalist, chic evening looks
Dress it up with accessories or keep it simple — it adapts beautifully.
⭐ Final Thoughts
The Amazon Essentials linen‑blend wide sleeve shirt is a stylish, comfortable, and versatile piece that feels more elevated than its price point. The adjustable waist and relaxed fit make it flattering and easy to wear, while the black color keeps it timeless. A great everyday staple for anyone who loves effortless style with a touch of structure.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Elegant and Comfortable.
Size: X-Large, Color: Light Beige
When I received this shirt, it looked wayyyy bigger than it actually is, due to the way it is cut.
The drawstring in the waist of the shirt is extended to the maximum when you get it, so it makes the shirt look extra wide.
But naturally, when you pull the top on and cinch the waist, the whole look comes together.
So make sure to order your actual size!
Don't be fooled by what you see when you open the packet!
There's some obvious texture from the horizontal weave in the linen, but the fabric is very soft.
The inner label says this shirt is 55% linen and 45% cotton and honestly? It shows.
It has a high amount of breathability without the shirt feeling flimsy. There's a slight amount of stretch, but it's not elastic. It doesn't feel cheap at all.
This would feel good to wear in an indoor and outdoor environment.
Paired with a camisole, I feel like you could dress this up or down.
The one drawback of it being natural fibers is that it has a tendency to wrinkle. But that's honestly fine for me.
I have an iron and I don't mind using it. lol
5 stars!
Recommended.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Impressive quality with a high end look and feel
Size: Large, Color: Light Beige
This Amazon Essentials linen blend shirt is beautiful. The quality is on par with high end brand tops that I have, and it does not disappoint. The light beige color is flattering and very versatile. The quality of the material and stitching is top notch. The fabric of the shirt is 55% linen and 45% cotton which is fantastic for the warmer months. The breathability and comfort are unsurpassed. The top washes well in a cold cycle, and I hang it to dry. I find that steaming the shirt after it dries takes out any wrinkles and really softens the fabric. The size chart is accurate for a relaxed look as described, but if you prefer a more fitted look you may want to size down. The drawstring waist gives the top a fun and flattering peplum look with a beautiful drape to it. Overall, I am thrilled with this shirt and would highly recommend. At the current price of $21.00 this is an excellent deal for a high quality top at an extremely affordable price. I just wish this came in more colors!
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Reviewed in the United States on May 12, 2026
★★★★★ 3
As advertsied but not for me
Size: Small, Color: Light Beige
The shirt is exactly as advertised. I did not find it flattering on me, and likely won't be wearing it. That doesn't mean it is a bad shirt, it just isn't the right one for me. If you want something lightweight for summer and like this shirt style, this may be a good choice. Otherwise, find something you like more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
Relaxed Fit Linen Blend Button Down Shirt
Size: Large, Color: Light Beige, Size: Large, Color: Light Beige
I like this shirt and it actually looks better than it does in the attached photo. The shirt is 55% linen and I took the photo without ironing because I wanted to show that this shirt is better than many linen shirts when it comes to wrinkles. In fact, I can steam the wrinkles out and don’t need to drag out the iron. The shirt is cool and comfortable. I like that you can use the draw string waist to make it more fitted. The button holes are a little small, which makes it harder for those of us who have arthritis to use. I will just leave most of the buttons fastened and slip the shirt over my head. It seems very well made. I looked it over carefully and did not find any loose threads or missed stitches. I think this is a good value.
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Reviewed in the United States on May 28, 2026