BMW Intake Parts for BMW E21 320i M10 1.8L

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One thing drivers and cars have in common is the need for air. Induction systems provide a third of the critical necessities for engines to run, so giving your BMW the best way to breathe is paramount in engine performance. If you need to replace your filter, recharge your reusable pod filter, or upgrade your intake, turbos, or intercooler parts, everything can be found below. We have OEM replacements as well as aftermarket performance upgrades to keep your BMW pristine, powerful, and functioning at peak efficiency.

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Mahle - Corporate Logo
T#:3425
Part#: 13721271254
Ships in 2 Business Days
$ 32.80

This product was last offered at the strikethrough price on
07-02-2026

$ 32.43 USD
Free Shipping on orders $49 and up
$ 32.43 USD
Free Shipping on orders $49 and up
Stock replacement air filter for the stock BMW airbox.

This air filter fits the following BMWs:
1975-1976 E9 Coupe - 3.0Si coupe
1976-1981 E12 5 Series - 528i, 533i
1977-1983 E21 3 Series - 320i
1977-1987 E23 7 Series - 733i, 735i
1976-1989 E24 6 Series - 630Cs, 633Csi, 635Csi
1984-1985 E30 3 Series 4 cylinder 318i (M10 engine)
1987-1991 E30 M3 (S14 Engine)
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DO88 - Corporate Logo
T#:35323507
Part#: LF-250
Ships on Aug 11, 2026
$ 978.99 USD
Free Shipping on orders $49 and up
  

Introducing the do88 Intake System for BMW 320i and 330i G20 – Engineered for Maximum Performance!

At do88, we understand that filtration, airflow, and heat management are crucial when designing an intake system for turbocharged engines.

Our intake system is designed to provide the turbo with excellent filtration, an optimized airflow path, and consistently low inlet temperatures. One of the key challenges with the B48/B46 engine is the intake system’s location near the exhaust manifold, which generates intense heat and causes rapid heat soak.

High intake air temperatures (IATs) can significantly reduce engine performance, as hot, less dense air makes it harder for the turbo to build boost efficiently. To address this, our fully sealed intake system minimizes heat exposure and maintains low IATs. However, fully sealed systems can face airflow restrictions due to the factory airbox’s single air feed. We resolved this by adding a secondary air feed and incorporating a heat shield into the airbox design to block heat from the exhaust manifold. The large 7” airbox ensures ample airflow around the filter and accommodates strut braces.

We replaced the stock intake hose with a high-flow 102mm (4”) mandrel-bent aluminum pipe paired with a custom silicone hose. The system also features a custom-designed air filter with tightly woven cotton gauze for exceptional filtration. The filter is washable, reusable, and built for long-lasting performance.

Unlike the stock air filter box and intake hose, which are designed with silencers to reduce turbo and induction noise, the do88 system eliminates these elements. This allows for a more pronounced and engaging turbo spool and induction sound, giving you a truly dynamic driving experience.

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Mahle - Corporate Logo
T#:7321
Part#: 13721262600
Back Ordered
$ 32.99 USD
Free Shipping on orders $49 and up
Replacement air filter for stock airbox. This is a high quality replacement filter, made by an original equipment manufacturer (OEM) such as Mahle or Mann.

This item fits the following BMWs:
1977-1979 E21 BMW 320i
1977-1982 E21 BMW 323i
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