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Description
Dinan Semi-Open Intake - BMW / F-Series / B46 / B48Looking for more sound than what can be attained from the standard Dinan closed box intake for F2x F3x B46 B48 powered vehicles and don't want to sacrifice all the performance gains or the beautifully crafted carbon fiber design in the process? This semi open variant of the same intake meets those demands using a revised lid with an additional auditory port so those intoxicating turbo noises can be more easily heard. Beyond the additional sound
Looking for more sound than what can be attained from the standard Dinan closed box intake for F2x/F3x B46/B48 powered vehicles and don't want to sacrifice all the performance gains or the beautifully crafted carbon fiber design in the process? This semi-open variant of the same intake meets those demands using a revised lid with an additional auditory port so those intoxicating turbo noises can be more easily heard.
Beyond the additional sound opening the semi-open intake takes the same path to success as its closed box counterpart. Improve upon the factory design by increasing flow via a larger airbox and filter element thereby improving throttle response and lessening the strain on the turbocharger for maximum efficiency. While box and filter enlargement and redesign are a major factor in ultimately producing a more potent intake, they are not the only variables in creating a more efficient design either. The devil is in the details which is where Dinan thrives. Dinan engineers focused their attention on the intake pipe itself where numerous improvements could be made. In factory configuration, the intake tube comes complete with baffling and a small Helmholtz chamber to reduce unwanted sound. As a byproduct, these features also cause a more turbulent airflow path which robs the factory system of potential power. These two specific details are diametrically opposed to our intended market's desires, so the removal of these features was paramount. Through numerous iterations, a carbon fiber intake tube was developed that eliminated flow disruptions and allowed the natural sound of an unimpeded intake tract to sing. All told this thorough methodology of design allows the Dinan carbon fiber intake for the B46/B48 engine to elicit gains of 6 HP and 6 TRQ at 5000 RPM on a completely stock vehicle.
Not to be outdone by the performance side of the equation, the B46/B48 intake also is completely made up of carbon fiber unlike 4-cylinder intakes of previous generations where a mix of materials were used. Not only is the intake completely carbon construction but the quality of the material has been improved as well. While looks are surely important, and this piece has that department covered in spades, the improved construction and coating also guarantees that the appearance of the engine bay with the Dinan intake will not be marred over time. Built to elicit a more pronounced sound, imbue the engine bay with some carbon class, perform, and last the duration-- the Dinan semi-open B46/B48 carbon fiber intake is a modification that is a must for any enthusiast that places sound atop their requirements list.
Features:
- More Power: + 6 HP @ 5000 RPM & + 6 lb-ft @ 5000 RPM (+ 5 WHP & + 5 WTQ) without additional modifications
- A pronounced sporty sound courtesy of a semi-open design
- Improved throttle response
- Larger volume air box (30% larger than stock) for increased breathability
- 34% increase in filter area (stock: 76.3in², Dinan: 102.1in²) for optimum flow
- Optimized carbon fiber intake tube
- Free flowing injection molded Air Mass Meter housing (ove 20% larger then stock)
- Quick and easy installation
- 50 State Emissions Legal (partial application list): CARB EO D-176-56 (2019-21 F2x/F3x 230i/330i/430i Only)
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
4.6 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Very cool looking and fits good
Size: Large, Color: White
It looks very nice and high quality
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Simple, warm, and affordable
Size: Medium, Color: Dark Heather
Picked this up for my kid and it’s a solid everyday hoodie. True to size, soft on the inside, and warm enough for cooler weather without being too bulky. It’s not super fancy, but that’s kind of the point-it’s just a dependable, comfortable sweatshirt that can handle school, play, and washes without falling apart.
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Reviewed in the United States on September 27, 2025
★★★★★ 4
Kid-Proof Hoodie
Size: X-Large, Color: Sport Grey
These hoodies are warm, comfortable, and great for everyday wear. They’ve held up well through constant washing and rough kid activities. The fit is true to size with enough room for layering. Great basic hoodie at a good price.
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Reviewed in the United States on June 6, 2026
★★★★★ 5
Cute and Comfy Sweatshirt
Size: Large, Color: Red
Super comfy sweatshirt. Nice material and thick and soft fabric True to color. (Bright Red) see through at all. Definitely durable and can go through lots! Worth every penny!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Comfort is Beyond
Size: X-Large, Color: Black, Size: X-Large, Color: Black
I’m 5’2-5’3 and i got extra large and it’s so comfy. You should get this hoodie because It’s comfortable and it’s good value for its money. the thickness is great as well with it being super soft. it’s durable for any occasion and the color suits every outfit. The wash ability is good just make sure you have it on cold and colors that aren’t easily blend able .
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Reviewed in the United States on May 14, 2026
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