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Stainless Steel Exhaust Manifold for BMW E30 Models

Application Scenarios:Used in performance tuning and aftermarket replacement for BMW E30 series including 320I, 323I, 325I, and 325IX. Suitable for automotive workshops, engine swap projects, and exhaust system upgrades.
Manufacturing Processes:Made from corrosion-resistant stainless steel with mandrel bending, precision TIG welding, and flange welding to ensure tight fit and longevity.
Features:High heat resistance, smooth exhaust flow, reinforced flange connections, and compatibility with E30 six-cylinder engines.
Customization:Supports OEM & ODM services, customizable tube length, angle, outlet size, and mounting positions based on client drawings or samples.
Availability:

Product Description

Product Introduction


This stainless steel performance exhaust header is engineered specifically for the BMW E30 series, including the 320I, 323I, 325I, and 325IX models. Designed to enhance exhaust flow and improve engine responsiveness, it replaces the stock cast iron manifold in tuned or restored vehicles. 


Features & Benefits


The E30 exhaust manifold is constructed using durable stainless steel to resist corrosion and thermal fatigue. Its mandrel-bent tubes allow smooth internal exhaust gas movement, which contributes to reduced backpressure and optimized engine breathing. The TIG-welded flanges ensure a tight and reliable seal.


Technical Specs Table

SpecificationDetails
Vehicle FitmentBMW E30 320I / 323I / 325I / 325IX
Engine CompatibilityInline-6 engines
Material304 Stainless Steel
Welding MethodTIG Welded Flanges & Tubes
Tube DiameterCustomizable (standard ~1.5” OD)
FinishPolished / Brushed
Installation TypeDirect Bolt-On
OEM ReferenceCustom-fit, reference dimensions
PackagingCarton + Foam + Pallet (bulk-ready)
Custom OptionsTube length, outlet size, flange


FAQs


Q: Is this header compatible with turbo setups?
A: This version is designed for naturally aspirated E30 engines. For turbo-compatible headers, please contact us with your configuration.


Q: Can I order this part with custom flange positions?
A: Yes, custom flange welding is available for B2B orders with CAD drawings or samples.


Q: Is bulk purchasing supported?
A: Yes, this product is commonly ordered in bulk by exhaust system distributors and tuning brands. Minimum order quantity policies apply.


Q: What's the expected lifespan under performance use?
A: With proper installation and engine tuning, the stainless steel header remains functional without cracking or deformation under standard performance loads.

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