Revive the iconic performance of classic BMW M cars with the BMW S38B35 Engine, a 3.5L inline-six that has defined BMW’s high-performance legacy. Originally engineered for the M5 (E28/E34) and M635CSi (E24), the S38B35 has also been adapted for restorations and high-performance builds in other models, including E12, E30, and select custom applications.
This engine is celebrated for its high-revving performance, smooth torque delivery, and robust motorsport-inspired internals. Its precision engineering features reinforced components, advanced camshaft design, and high-quality fuel injection for reliable, long-term performance. The S38B35 is perfect for enthusiasts seeking to restore a classic M car, upgrade an aging engine, or create a track-ready powerhouse.
Whether it’s installed in an original M5, M635CSi, or adapted for a custom project, this engine offers seamless OEM fitment and factory-grade performance, making it one of the most sought-after BMW engines for collectors and tuners alike.
⭐ Key Features
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3.5L Inline-Six High-Performance Engine (S38B35)
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Compatible with BMW M5 (E28/E34), M635CSi (E24), and select E12, E30 builds
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High-revving and smooth power delivery
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Strong torque with motorsport-inspired engineering
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Reinforced internals for performance and reliability
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OEM-quality fitment for restorations and engine swaps
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Ideal for classic BMW restoration, performance upgrades, or track builds
⭐ Why Choose the S38B35?
The S38B35 is legendary for its combination of performance, reliability, and motorsport DNA. Its robust design allows for high-revving power and long-term durability, making it the ultimate choice for classic BMW enthusiasts, M-series collectors, and tuners seeking authentic performance.
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