Product Description
BMW B58 Piston Set - ItalianRP IRPP033DA
The ItalianRP pistons are high-performance upgrades built for enthusiasts who want more out of their BMW or Toyota Supra with the B58 3.0L engine. Made in Italy with precision engineering, these pistons are designed to handle more power and stress than the factory setup, making them a great choice for both spirited street driving and serious track use. They’re compatible with a wide range of B58-powered models—from the BMW 340i, 540i, M340i, and X3 M40i, to the Z4 M40i and the MK5 Toyota Supra.
ItalianRP offers these pistons in three versions—Silver, Gold, and Platinum—each using a different aluminum alloy to suit your performance goals. The Silver version uses a 4032 alloy for a good mix of strength and reliability, while the Gold and Platinum options are made from the tougher 2618 alloy, with the Platinum pistons forged from billet for maximum strength in extreme conditions. They feature a double-bridge design inspired by Formula 1 technology, helping them stay rigid under high loads, and they maintain the OEM stroke and compression ratio, so they integrate seamlessly with your existing engine setup. Whether you're building a high-power street car or prepping for track days, these pistons are built to deliver performance and durability.
| Features | Specifications |
|---|---|
| Piston Code | IRPP033DA |
| Rod Code | IRPR501 |
| Engine Code | B58 |
| Number of Cylinders | 6 |
| Stroke | OEM |
| Compression Ratios | OEM, 9.50:1, 10.00:1 and 10.5:1 |
| Compression Height | OEM |
| Bore Size | 82.00 mm |
| Compatible Models | M240i, M240i xDrive, 340i, 340i xDrive, M340i, M340i xDrive, 440i, 440i xDrive, 540i, 540i xDrive, 640i, 640i xDrive, 740i, 740i xDrive, 840i, 840i xDrive, X3 M40i, X4 M40i, X5 xDrive40i, X6 xDrive40i, X7 xDrive40i, Z4 sDrive40i, MK5 Supra |
| Included Components | Pistons, Rings, Wrist Pins |
| Material | 2618 Aluminum Alloy |
| Manufacturing Origin | Italy |
ItalianRP is a performance engine component manufacturer based in Italy, specializing in high-quality forged pistons and connecting rods for European and Japanese engines. Known for their motorsport heritage and precision craftsmanship, ItalianRP parts are designed and built in-house using top-grade materials like 2618 aluminum and 4340 steel. Every component undergoes rigorous quality control and is CNC-machined to exacting tolerances, ensuring reliable performance in everything from street builds to full race applications. With a growing presence in North America through ItalianRP USA, the brand brings together Italian engineering excellence and a passion for pushing automotive limits.
