Upgrading your intake system
An upgraded intake system increases the amount of airflow available to your engine while still properly filtering out debris or particles from the road.
In vehicles that have the M276 with twin turbochargers, higher airflow allows the engine to make more power. This is most apparent in vehicles running higher boost levels such as those that are tuned or have upgraded turbochargers.
The stock airboxes, even with high-flow filters, show their limitations, especially with upgraded turbos.
The Weistec M276 Intake System
The Weistec M276 Intake System provides proper airboxes that help ensure the majority of the air that comes into the system is being pulled from outside the engine bay giving enough air to meet power demands while still filtering out particles and debris from the road.
The airbox is fed via the same air inlets on the radiator core support that the stock airboxes use, pulling fresh air from in front of the radiator. The carbon fiber top panels of the box are removable for servicing the filters.
Less Air Restriction
The filters feature a 4-ply lightly oiled cotton media filtration element. This filter element is perfect for high airflow applications as it offers minimal airflow restriction while providing enough air filtration to protect your engine in road and track use. The airbox lids consist of a base layer of 0.03" thick 304 stainless steel and a top layer of carbon fiber, giving the intake a sleek and refined look. The core support adapters are made from 80 durometer silicone and attach the airbox directly to core support mounted air intake ducts, providing unrestricted airflow to the airbox. Competitors' airboxes utilize the stock intake core support adapters which have a bellows design which adds a lot of restriction and greatly decreases the benefits of an aftermarket intake. The other options on the market also fail to offer the same fitment and sealing/isolation from engine bay heat that the Weistec M276 Air Box offers.
Dyno Chart
Our intake features high-flow turbo and airbox inlets and filters with significantly more surface area than stock making for a properly thought-out design that best provides increased airflow to the turbos. The before and after dyno chart on this page clearly shows how much better the intake allows the turbos to breathe at every point in the RPM range.
Key Features:
- 100% bolt-on Installation
- 100% Serviceable
- Increased efficiency and reduced intake temperatures
- Reduces wastegate duty needed for higher-than-stock boost levels
- Substantially more airflow than OEM
- Designed using high-precision laser scanning
- Designed and Manufactured in the USA
Vehicle fitment
- 2013-2018 Mercedes-Benz C400 Base
- 2015-2017 Mercedes-Benz C450 Base
- 2015-2021 Mercedes-Benz C43 AMG Base
- 2020-2021 Mercedes-Benz C400 Base
Weistec part number: 01-276-02406-8
All products are shipped out from one of the Signature Autohaus shipping locations. Signature Autohaus drop ships some products and ships direct others. All products are shipped via FedEx, UPS, DHL or another qualified shipping carrier.
Special arrangements may need to be made for international orders and oversize packages.
In the event a product arrives damaged to your location, please follow the steps listed below. All damaged items must be reported to the shipping carrier immediately and you must notify Signature Autohaus within 5 days of receiving your order. If these steps are not followed, your shipment may not be able to be a candidate for a claim.
Complete the Shipping DAMAGE Claim Form by contacting the carrier that delivered your package.
1) Keep the product and its original packaging and box
Make a list of the damaged or lost item(s)
2) Signature Autohaus will contact the shipper once we receive the email info above to schedule a pickup, DO NOT send it back to us
3) Once the product is picked up and inspected by Signature Autohaus and or Supplier, a replacement or credit will be issued.
4) The Shipping Rates shown at time of checkout our dimensional rate only. If your shipment weight is to much then contact us for a shipping quote. If there is an error in the shipping rate quoted we will contact you and let you know of the changes. International orders(Outside the USA) are not automatically processed as we may require additional information from you.
If a product is ordered and not wanted, the UNUSED item can be returned for a 35% restocking fee. Shipping is not refundable in either direction. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the Signature Autohaus warehouse are shipped via FedEx or Freight and require a signature when delivered. Some packages shipped from the manufacturer may or may not require signatures for package release. Fedex, UPS, and DHL have package pick up locations if you are unable to sign for the package. If the package is returned to Signature Autohaus or manufacturer, you will be responsible for the return shipping costs and pay a 35% restocking fee. These fees will be charged to your account on file.
SIGNATURE AUTOHAUS DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return, will not cover any expenses related to the product or installation, and you maybe be required to purchase a replacement.
In the event that the product you ordered is sent either incorrectly or processed wrong by Signature Autohaus, we will arrange for the package to come back to us and ship out a replacement. We will evaluate the situation before we determine the shipment was incorrect.
To return a item back to us, please do the following:
1. Contact our Customer Service Department to receive a RMA number. All packages returned without a Returned Merchandise Authorization number will be refused.
2. Package the item up in original packaging unless deemed unuseable
3. Include the UNUSED parts and any additional information that was included
4. Include a copy of your receipt
5. Write a brief description of the problem with the product
6. If you have a receipt for the return shipping include as well
7. We DO NOT accept any freight collect packages
8. Once we have received the above information we will notify you via email or phone and let you know the status.
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