BMW Internal Engine Parts for BMW 3 Series G20 (2019+)

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Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

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Supertech - Corporate Logo
T#:21604314
Part#: KPR-5.0-7S-24
In Stock
$ 72.99 USD
Free Shipping on orders $49 and up
Two required per valve, for use with certain supertech valves 5.0mm single groove
JE Piston - Corporate Logo
T#:33746530
Part#: 371718
In Stock at Vendor
$ 1,324.99 USD
Free Shipping on orders $49 and up

JE Pistons for BMW/TOYOTA B58B30 - 3.228" Bore, .866" Pin, -11.1CC Dish Volume

Boost Your Engine’s Performance with JE Forged Pistons

These JE Pistons are built for the modern high-performance BMW B58B30 and Toyota B58 engines, providing the perfect balance of strength, precision, and durability.

  • Engine Compatibility: Designed for BMW B58 and Toyota B58 engines, such as those found in the Toyota Supra and BMW G20 models.
  • Bore Size: 3.228" (82mm) ensures proper cylinder fitment for high-performance builds.
  • Pin Size: 0.866" (22mm) wrist pin diameter for secure, reliable piston-rod connections.
  • Dish Volume: -11.1cc, designed for turbocharged applications to reduce compression and prevent detonation under high boost.
  • Forged 2618 Aluminum: Provides excellent strength and durability, allowing the pistons to withstand extreme conditions in both street and track environments.
  • Lower Compression Ratio: Specifically engineered for boosted setups, ensuring optimal performance with turbo or superchargers.
  • High-Temperature Coatings: Thermal coatings on the piston crowns reduce heat absorption, improving durability under high-stress conditions.
  • Lightweight Design: Improves throttle response and engine rev speed by reducing the overall weight of the rotating assembly.

Ready for Extreme Boost Applications

Perfect for turbocharged and high-horsepower setups, these JE pistons are built to withstand extreme boost pressures, delivering reliable performance and power gains. Whether on the track or the street, these pistons will help extract maximum potential from your BMW or Toyota B58 engine.

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JE Piston - Corporate Logo
T#:33612885
Part#: 389616
In Stock at Vendor
$ 1,722.99 USD
Free Shipping on orders $49 and up
The JE Pistons for the B58 engine are high-performance forged pistons designed for BMW's 3.0L inline-six turbocharged engine. These pistons are built with aerospace-grade materials, offering superior strength and durability under extreme conditions. They feature precision-machined surfaces, optimized for high boost applications, reduced friction, and enhanced thermal management. JE Pistons are known for their lightweight design, which improves engine response, while maintaining reliability for both street and track use. Customizable options for compression ratios and coatings are often available to suit specific performance goals.
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Supertech - Corporate Logo
T#:14783496
Part#: VSI-BM50-IKT
Ships in 6 Business Days
$ 14.99 USD
Free Shipping on orders $49 and up
Supertech Valve Seals are the final piece of the puzzle for your performance valvetrain. This is for a complete valve stem seal repair for the Intake side, you will need 8 of a different part for the exhaust side.
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Supertech - Corporate Logo
T#:21604324
Part#: SPR-FE20BE-24
Ships in 8 Business Days
$ 471.99 USD
Free Shipping on orders $49 and up
$ 471.99 USD
Free Shipping on orders $49 and up
Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 75 @ 37 Open Pressure: 155 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm Rate: 8 OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm
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Supertech - Corporate Logo
T#:641511
Part#: SUP-HPVK-B58
Ships on Aug 5, 2026
$ 2,339.99 USD
Free Shipping
$ 2,339.99 USD
Free Shipping
Upgrade your valvetrain with Supertech components Kit Contains: 12 Nitride Intake Valves 24 Intake Valve Keepers 12 Inconel Exhaust Valves 24 Exhaust Valve Keepers 24 High Performance Valve Springs 24 Titanium Retainers
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JE Piston - Corporate Logo
T#:33746539
Part#: 371720
Back Ordered
$ 1,324.99 USD
Free Shipping on orders $49 and up

JE Pistons for BMW/TOYOTA B58B30 - 3.268" Bore, .866" Pin, -12.3CC Dish

Precision-Forged Performance for BMW and Toyota B58 Engines

Unlock the full potential of your BMW B58B30 or Toyota B58 engine with JE’s forged piston set, designed to provide durability, lower compression, and efficiency for turbocharged or high-performance builds. Whether you’re aiming for street performance or track dominance, these pistons offer the strength and reliability needed for modern forced induction engines.

  • Engine Compatibility: Fits both BMW B58B30 and Toyota B58 engines, making it ideal for vehicles like the Toyota Supra (A90) and BMW models such as the G29 Z4 and G20 3-Series.
  • Bore Size: 3.268" (83mm) bore for precise fitment, ensuring optimal sealing and performance in high-horsepower applications.
  • Pin Diameter: 0.866" (22mm) wrist pin for secure and reliable piston-rod engagement, even under extreme stress.
  • Dish Volume: -12.3cc, providing a lower compression ratio for boosted applications, perfect for turbo setups aiming for high power with reduced knock potential.
  • 2618 Forged Aluminum Alloy: Manufactured from high-strength 2618 aluminum, renowned for its durability, heat resistance, and ability to withstand the intense conditions of high-performance engines.
  • Compression Control for Forced Induction: The -12.3cc dish volume is engineered for lower compression, allowing for safe tuning under high boost pressure while maintaining reliability.
  • Thermal Coating: Advanced coatings minimize heat absorption, improving durability under intense engine loads and extending piston life.
  • Lightweight Design: Optimized for reduced mass, these pistons improve throttle response and rev speed without sacrificing strength or endurance.
  • Track-Tested Performance: Designed and tested for both street and competition use, ensuring that you get race-level performance in your everyday build.

Built for Boosted Power and Reliability

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Supertech - Corporate Logo
T#:21604312
Part#: KPR-5.0-7S
Back Ordered
$ 3.99 USD
Free Shipping on orders $49 and up
Two required per valve, necessary use with certain supertech valves 5.0mm single groove


JE Piston - Corporate Logo
T#:33612887
Part#: 389618
Back Ordered
$ 1,722.99 USD
Free Shipping on orders $49 and up
The JE Pistons for the B58 engine are high-performance forged pistons designed for BMW's 3.0L inline-six turbocharged engine. These pistons are built with aerospace-grade materials, offering superior strength and durability under extreme conditions. They feature precision-machined surfaces, optimized for high boost applications, reduced friction, and enhanced thermal management. JE Pistons are known for their lightweight design, which improves engine response, while maintaining reliability for both street and track use. Customizable options for compression ratios and coatings are often available to suit specific performance goals.
Show More Show Less
JE Piston - Corporate Logo
T#:33612886
Part#: 389617
Back Ordered
$ 1,722.99 USD
Free Shipping on orders $49 and up
The JE Pistons for the B58 engine are high-performance forged pistons designed for BMW's 3.0L inline-six turbocharged engine. These pistons are built with aerospace-grade materials, offering superior strength and durability under extreme conditions. They feature precision-machined surfaces, optimized for high boost applications, reduced friction, and enhanced thermal management. JE Pistons are known for their lightweight design, which improves engine response, while maintaining reliability for both street and track use. Customizable options for compression ratios and coatings are often available to suit specific performance goals.
Show More Show Less