CTS Turbo

85mm MAF Housing

$499.99

SKU: CTS-HW-040

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The CTS Turbo B5 S4 85mm MAF Housing is engineered for enhanced airflow in modified B5 Audi S4, RS4, and C5 Audi A6/Allroad 2.7T vehicles. This housing is specifically designed for vehicles equipped with RS4 or larger turbochargers, necessitating upgraded software and fuel injectors for optimal performance. Constructed from durable aluminum with a raw finish, this MAF housing features an 85mm inside diameter to accommodate increased airflow demands. It is designed exclusively for use with Hitachi MAF sensors, ensuring compatibility with specific sensor types. The housing includes all necessary mounting bolts for installation and can be paired with an optional stock airbox adapter (CTS-HW-164). Installation is recommended for B5 S4 models with a Stage 3 upgrade, though users are advised to confirm the housing size with their software tuner prior to ordering. The MAF housing is designed to be a direct fit for the Audi S4 B5 (1999-2002) with the 2.7T engine.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandCTS Turbo
Part NumberCTS-HW-040
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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