BMW M20 Bomb-Proof MLS Exhaust Manifold Gaskets 2mm THICK E21 E28 E30 E34

Engineered for the iconic BMW M20 inline-six, these 2mm multi-layer steel exhaust manifold gaskets deliver the sealing performance your build demands. Whether you're building a turbo E30, restoring a classic 5-Series, or simply want bulletproof reliability, podio1 provides the quality that separates podium finishes from the pack.

Fitment:

• BMW E21 (3-Series, 1977-1983)
• BMW E28 (5-Series, 1981-1988)
• BMW E30 (3-Series, 1982-1991)
• BMW E34 (5-Series, 1988-1996)

Compatible Engine Codes:

• M20B20 (2.0L)
• M20B23 (2.3L)
• M20B25 (2.5L)
• M20B27 (2.7L)

Replaces OEM Part Numbers:

• 11621723655
• 11621708946
• 11621279860
• 11621278536
• 11621728489
• 11621723877

Why Multi-Layer Steel Construction Matters

Exhaust manifolds experience extreme thermal cycling, expanding and contracting with every heat cycle. Traditional composite gaskets crush over time and fail under sustained high temperatures and pressure. Our 2mm MLS construction features multiple layers of premium stainless steel with integrated raised sealing beads that concentrate clamping pressure precisely around each exhaust port. These beads create a focused seal that adapts to surface imperfections and thermal expansion, maintaining consistent contact pressure and a leak-free seal through countless heat cycles.

Perfect for slightly warped manifolds that are blowing out OEM or other gaskets - the MLS construction with embossed fire ring provides optimum sealing even on imperfect surfaces.

Key Features:

• 4-Layer MLS Construction - Sturdy multi-layer design with embossed fire ring for maximum sealing
• 2mm Overall Thickness - Provides robust sealing while maintaining proper compression ratio
• Multi-Layer Stainless Steel - Withstands extreme temperatures and pressure cycling
• Raised Sealing Beads - Concentrates clamping force around each port for superior sealing and micro-surface conformability
• Turbo-Ready - Engineered to handle elevated exhaust manifold pressures and extreme thermal stress from forced induction applications
• Precision Manufacturing - Laser-cut to exact M20 exhaust port specifications for proper alignment
• Complete Set - 6 gaskets included

Applications:

• Turbo and supercharger builds (popular in E30 turbo conversions)
• Engine rebuilds and manifold replacements
• Header installations
• Warped manifold repairs
• High-mileage refreshes
• Performance street cars and track builds

Installation Notes:

Ensure all mating surfaces are clean, flat, and free of debris before installation. MLS gaskets require smooth surfaces for optimal sealing. Torque manifold bolts to BMW factory specifications in proper sequence. These gaskets are designed for street and track use but may require retorquing after initial heat cycles on high-boost applications.

What's Included:

• 6x 2mm MLS Exhaust Manifold Gaskets (complete set for one M20 engine)

Technical Specifications:

• Material: Multi-layer stainless steel
• Thickness: 2mm overall
• Construction: 4-layer MLS with embossed fire ring
• Quantity: 6 gaskets per set
• Application: Cylinder head to exhaust manifold

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