If you’re searching for a turbo kit for your BMW M240i, you’re likely aiming to boost power and driving excitement. The B58 Turbo Upgrade Stage 3 stands out as the best overall choice, offering a significant performance boost with reliable build quality. For those on a tighter budget, the A-Premium B03G Complete Turbocharger Turbo Kit delivers solid gains at a more accessible price. Meanwhile, enthusiasts wanting maximum horsepower might consider the B58 Turbo Upgrade Stage 3 800Hp options, designed for aggressive tuning. Each choice involves tradeoffs around complexity, cost, and durability. Keep reading for a detailed breakdown of these options and how to pick the right turbo kit for your BMW M240i.
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Key Takeaways
- The highest horsepower gains come from Stage 3 upgrade kits designed for aggressive tuning, but they require more installation effort and maintenance.
- The best overall turbo kit balances performance with reliability and ease of installation, making it suitable for most M240i owners.
- Budget-friendly options like the A-Premium kit still provide meaningful power increases without the high complexity of premium upgrades.
- Compatibility with your specific BMW model and engine version is critical; not all kits fit every variant without modifications.
- Premium kits often include better materials and more comprehensive support, which can justify higher costs for serious enthusiasts.
| B58 Turbocharger for BMW M240i 340i 440i 540i 740i |  | Best Overall Upgrade for Reliability and Support | OE Number: 11659423787, 11657643147, 11658742504 | Fitment: 2016-2019 M140i / 2017-2021 M240i; 2016-2020 340i / 440i; 2017-2019 540i; 2018-2019 640i xDrive GT; 2016-2019 740i / 740Li | Material: High-quality materials | VIEW ON AMAZON | See Our Full Breakdown |
| A-Premium B03G Complete Turbocharger Turbo Kit |  | Best for Wide Compatibility and Durability | Part Type: Turbo Assembly | Material: Alloy | Gasket Included: Yes | VIEW ON AMAZON | See Our Full Breakdown |
| B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW M140i M240i 340i 440i 540i 740i 3.0L |  | Best for High-Performance Power Boost | Compatibility: BMW M140i, M240i, 340i, 440i, 540i, 740i | Horsepower: 800Hp | Engine Type: 3.0L | VIEW ON AMAZON | See Our Full Breakdown |
| B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW M140i M240i 340i 440i 540i 740i 3.0L |  | Best for Smooth Power Delivery at High Performance | Compatibility: BMW M140i, M240i, 340i, 440i, 540i, 740i | Engine Type: 3.0L | Horsepower: 800Hp | VIEW ON AMAZON | See Our Full Breakdown |
| B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW M140i, M240i, 340i, 440i, 540i, 740i 3.0L | | Best for Maximum Power with Focus on Durability | VIEW ON AMAZON | See Our Full Breakdown | |||
| A-Premium TD04LR6W-04HR Complete Turbocharger Turbo Kit |  | Best Budget-Friendly Upgrade for 2.0L BMWs | Part Type: Turbo Assembly | Material: Alloy | Turbo Model: TD04LR6W-04HR | VIEW ON AMAZON | See Our Full Breakdown |
| B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW Models | | Best High-Performance Upgrade for Serious Power Goals | Compatible Vehicles: BMW M140i, M240i, 340i, 440i, 540i, 740i | Turbo Size: 62-80mm (billet wheel), 62-68mm (shaft wheel) | Horsepower: Up to 800Hp | VIEW ON AMAZON | See Our Full Breakdown |
| turbo kit for bmw m240i | Material | Part Numbers |
|---|---|---|
| B58 Turbocharger for BMW M240i | High-quality materials | — |
| A-Premium B03G Complete Turboc | Alloy | 1855-970-0024, 1855-970-0041 |
| B58 Turbo Upgrade Stage 3 800H | Alloy | 8679022, 18559700063 |
| B58 Turbo Upgrade Stage 3 800H | Alloy | 8679022, 18559700063 |
| B58 Turbo Upgrade Stage 3 800H | — | — |
| A-Premium TD04LR6W-04HR Comple | Alloy | 49477-02411, 49477-02403, 11657637563 |
| B58 Turbo Upgrade Stage 3 800H | Heat-resistant alloys | — |
More Details on Our Top Picks
B58 Turbocharger for BMW M240i 340i 440i 540i 740i
This turbocharger stands out for its high-quality materials and rigorous testing, making it a reliable choice across a range of BMW models like the M240i and 340i. Compared with high-performance options like the Stage 3 kits, it emphasizes durability and consistent performance rather than maximum horsepower. The inclusion of a 1-year warranty and professional support adds peace of mind, but it limits compatibility to specific models, and installation requires professional expertise. If you prioritize dependability with factory-like quality, this turbo makes the most sense.
Pros:- High-quality materials with rigorous testing ensure durability
- Includes a 1-year warranty and access to technical support
- Designed for multiple BMW models, offering broad compatibility
Cons:- Limited to specific BMW models, reducing flexibility
- Installation requires professional expertise, adding cost
Best for: BMW owners seeking a dependable, tested upgrade with factory-grade quality and support.
Not ideal for: Performance enthusiasts aiming for maximum horsepower or DIYers without professional assistance.
- OE Number:11659423787, 11657643147, 11658742504
- Fitment:2016-2019 M140i / 2017-2021 M240i; 2016-2020 340i / 440i; 2017-2019 540i; 2018-2019 640i xDrive GT; 2016-2019 740i / 740Li
- Material:High-quality materials
- Warranty:1 year
- Testing:Rigorous testing
- Installation:Professional recommended
Our verdict“This turbo is perfect for owners who want a reliable, factory-quality upgrade with solid support, not the highest horsepower gains.”
A-Premium B03G Complete Turbocharger Turbo Kit
The A-Premium B03G kit offers broad compatibility with BMW models from 2019 to 2026, making it a versatile upgrade option. Its alloy construction and included gaskets improve durability and performance, especially compared to simpler replacements. However, proper installation and compatibility checks are essential, as this kit may be complex for non-professionals. Unlike the Stage 3 kits, it focuses more on reliability and longevity than extreme horsepower gains. This pick suits owners who want a durable, all-in-one upgrade for newer BMWs.
Pros:- Compatible with a wide range of BMW models from 2019 to 2026
- Includes gaskets to improve sealing and performance
- One-year unlimited-mileage guarantee
Cons:- Requires proper installation and compatibility verification
- Limited performance details available in reviews
Best for: Owners of BMW models from 2019-2026 seeking a comprehensive, durable turbo upgrade without extreme modifications.
Not ideal for: Performance-focused drivers wanting maximum horsepower or those comfortable with complex installations without professional help.
- Part Type:Turbo Assembly
- Material:Alloy
- Gasket Included:Yes
- Part Numbers:1855-970-0024, 1855-970-0041
- Warranty:1 year
- Compatibility:2019-2026 BMW models
Our verdict“Ideal for owners who prioritize durability and broad compatibility over maximum horsepower or DIY ease.”
B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW M140i M240i 340i 440i 540i 740i 3.0L
This Stage 3 turbo delivers up to 800 horsepower, making it a standout for those chasing significant performance increases. Its durable alloy construction and fully inspected rotor provide smooth, responsive airflow, outperforming standard upgrades like the B58 Turbocharger by focusing on high horsepower. However, the high power output comes with installation complexity and potential stress on engine components, which might require additional upgrades or professional tuning. It’s a clear choice for enthusiasts seeking maximum power and willing to handle the tradeoffs of high-performance tuning.
Pros:- Boosts engine responsiveness and power significantly
- Low vibration and noise during operation
- Durable alloy construction withstands high temperatures
- Fully inspected and tested quality assurance
Cons:- Installation often requires professional expertise
- High horsepower may increase engine wear if not managed properly
Best for: Performance enthusiasts aiming for maximum horsepower and willing to handle installation complexity and potential engine stress.
Not ideal for: Everyday drivers or those with limited mechanical skills who prefer a more conservative upgrade.
- Compatibility:BMW M140i, M240i, 340i, 440i, 540i, 740i
- Horsepower:800Hp
- Engine Type:3.0L
- Stage:Stage 3
- Part Numbers:8679022, 18559700063
- Material:Alloy
Our verdict“This turbo upgrade suits drivers seeking extreme power gains and capable of supporting high-performance tuning efforts.”
B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW M140i M240i 340i 440i 540i 740i 3.0L
This Stage 3 kit is designed to deliver steady airflow with a precision-balanced rotor, reducing vibrations and noise while providing an 800Hp boost. Its durable alloy construction ensures high-temperature stability, making it suitable for high-performance upgrades. Compared to the first Stage 3 kit, this option emphasizes smoother operation and durability, but it still demands professional installation and maintenance. It’s best suited for drivers wanting reliable high horsepower with refined engine behavior.
Pros:- Improves engine responsiveness and power output
- Precision-balanced rotor for smooth operation
- Durable alloy construction withstands high temperatures
- Fully inspected and tested for quality
Cons:- Requires professional installation
- Designed for high-performance applications, may accelerate wear if not maintained
Best for: High-performance drivers who want powerful upgrades without sacrificing smoothness and long-term reliability.
Not ideal for: Casual drivers or those seeking a simple, bolt-on upgrade with minimal tuning requirements.
- Compatibility:BMW M140i, M240i, 340i, 440i, 540i, 740i
- Engine Type:3.0L
- Horsepower:800Hp
- Stage:Stage 3
- Part Numbers:8679022, 18559700063
- Material:Alloy
Our verdict“This turbo kit offers a refined, high-horsepower upgrade suited for drivers prioritizing smooth operation and durability over ease of installation.”
B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW M140i, M240i, 340i, 440i, 540i, 740i 3.0L
This Stage 3 turbocharger is engineered for the highest power output of 800Hp, built with heat-resistant alloys to ensure high-temperature stability. Its rigorous dynamic balancing results in smooth, responsive airflow, making it ideal for serious performance upgrades. Compared with other high-horsepower options, this turbo emphasizes durability under demanding conditions, but installation can be complex and may require professional tuning. It’s best suited for experienced tuners or high-performance builds aiming for extreme power.
Pros:- High-temperature resistant construction ensures reliability
- Optimized airflow for quick turbine response
- Rigorous balancing for smooth, responsive performance
- Suitable for demanding high-performance applications
Cons:- Installation may be technically challenging
- Higher cost for maximum performance benefits
Best for: Experienced tuners seeking the top-tier high-horsepower upgrade with proven durability and performance under stress.
Not ideal for: Casual users or those without advanced mechanical skills, due to complex installation and tuning requirements.
Our verdict“This turbo upgrade targets experienced enthusiasts aiming for maximum horsepower and durability under extreme conditions, accepting installation complexity as part of the package.”
A-Premium TD04LR6W-04HR Complete Turbocharger Turbo Kit
This turbo kit stands out for its compatibility with many BMW 2.0L models from 2017 to 2020, making it an accessible upgrade for those seeking improved boost without jumping to extreme horsepower. Compared to high-performance options like the B58 Turbo Upgrade Stage 3, this kit emphasizes durability and ease of replacement with included gaskets, but it offers less raw power and performance gains. The one-year unlimited-mileage guarantee adds confidence, though the installation isn’t straightforward and may require professional help. This kit suits owners wanting a reliable, cost-effective boost increase without the need for top-tier horsepower.
Pros:- Compatible with a wide range of BMW 2.0L models from 2017-2020
- Includes turbo gaskets to improve lifespan and prevent impurities
- Backed by a one-year unlimited-mileage guarantee
Cons:- Requires technical installation; professional service recommended
- Limited details on actual performance improvements in raw data
Best for: DIY enthusiasts or budget-conscious owners seeking a straightforward upgrade for daily driving and mild performance gains
Not ideal for: Performance addicts or those aiming for high horsepower targets, as this kit prioritizes reliability over maximum power
- Part Type:Turbo Assembly
- Material:Alloy
- Turbo Model:TD04LR6W-04HR
- With Gasket:Yes
- Part Numbers:49477-02411, 49477-02403, 11657637563
- Compatible Vehicles:BMW 2.0L models 2017-2020
- Guarantee:One-year unlimited mileage
Our verdict“This turbo kit is best suited for owners who want a dependable, affordable upgrade without requiring extreme horsepower increases.”
B58 Turbo Upgrade Stage 3 800Hp Compatible for BMW Models
This upgrade makes a clear statement with its ability to push BMW models like the M240i up to 800 horsepower, surpassing the power outputs of smaller upgrades such as the A-Premium TD04LR6W-04HR. It features high-temp resistant alloys, larger billet wheels, and precision balancing, all aimed at delivering reliable high-speed spooling and acceleration. While the installation demands technical skill and specific knowledge, the payoff is a turbo capable of extreme performance, ideal for track-focused builds or high-horsepower street cars. This upgrade is not for casual enthusiasts but for those committed to maximum power and willing to invest in quality parts and labor.
Pros:- Capable of delivering up to 800Hp for extreme performance
- Constructed with heat-resistant alloys for durability under high stress
- Optimized airflow channels and precision balancing for smooth operation
Cons:- Installation is complex and requires advanced technical skills
- Limited compatibility—designed for specific BMW models and years
- High cost may be prohibitive for casual users
Best for: Performance enthusiasts and tuners seeking a serious horsepower boost for BMW M240i or similar models
Not ideal for: Owners seeking a simple, bolt-on upgrade for daily driving or who lack the technical expertise for installation
- Compatible Vehicles:BMW M140i, M240i, 340i, 440i, 540i, 740i
- Turbo Size:62-80mm (billet wheel), 62-68mm (shaft wheel)
- Horsepower:Up to 800Hp
- Material:Heat-resistant alloys
- Blade Count:9 blades (wheel), 5+5 blades (turbine)
- Manufacture Date Range:May 2015 to June 2016
- Application:High-performance turbo upgrade
Our verdict“This turbo upgrade is ideal for serious power seekers ready to invest in high-performance modifications and expert installation.”
How We Picked
The products were selected based on their performance potential, build quality, ease of installation, and value for money. We prioritized kits with proven compatibility with the BMW M240i and its B58 engine, ensuring real-world applicability. Additionally, we considered user feedback, manufacturer reputation, and the scope of included components. Kits offering a good balance of power gain and reliability ranked higher, while those requiring extensive modifications or offering marginal improvements were rated lower. Our goal was to highlight options suitable for different budgets and skill levels, from casual enthusiasts to seasoned tuners.| turbo kit for bmw m240i | Material |
|---|---|
| B58 Turbocharger for BMW M240i | High-quality materials |
| A-Premium B03G Complete Turboc | Alloy |
| B58 Turbo Upgrade Stage 3 800H | Alloy |
| B58 Turbo Upgrade Stage 3 800H | Alloy |
| B58 Turbo Upgrade Stage 3 800H | — |
| A-Premium TD04LR6W-04HR Comple | Alloy |
| B58 Turbo Upgrade Stage 3 800H | Heat-resistant alloys |
Factors to Consider When Choosing Turbo Kit For Bmw M240i
Choosing the right turbo kit for your BMW M240i requires understanding several key factors. Beyond raw power figures, consider compatibility, installation complexity, durability, and the supporting modifications needed. A well-chosen kit can dramatically improve your driving experience, but a mismatch or poor quality component can lead to costly repairs or reliability issues. This guide explores the main considerations to help you make an informed decision tailored to your goals and skills.Compatibility and Fitment
Ensuring the turbo kit matches your specific BMW M240i variant is essential. Some kits are designed for certain model years or engine codes and may require additional modifications. Double-check the compatibility list and consult with specialists if unsure. Using an incompatible kit can lead to installation problems or performance issues, so prioritize options explicitly made for your vehicle’s configuration.
Installation Complexity and Skill Level
Some turbo kits are straightforward bolt-on upgrades suitable for DIY enthusiasts, while others demand advanced mechanical skills or professional installation. Consider your experience and available tools before choosing a kit. Complex installs may incur higher labor costs but often include more comprehensive tuning and support, potentially offering better long-term reliability.
Durability and Material Quality
High-performance turbo kits involve higher stress on engine components. Materials like stainless steel or ceramic-coated parts tend to last longer and resist heat better, which is vital for sustained power gains. Cheaper kits may save money upfront but could lead to premature wear or failures, especially under aggressive tuning conditions. Invest in quality to avoid costly repairs down the line.
Support and Warranty
Look for kits backed by reputable manufacturers offering warranties or technical support. Good support can be invaluable if issues arise during installation or operation. Cheaper or lesser-known brands might not provide the same level of assistance, increasing your risk of compatibility or installation problems that could damage your engine.
Cost and Value
Price varies widely among turbo kits, often reflecting quality, horsepower potential, and included components. While higher-end kits tend to deliver better durability and power, some budget options can still provide noticeable improvements without breaking the bank. Balance your budget with your performance goals, and remember that investing in a quality kit can save money in repairs later.
Frequently Asked Questions
Will installing a turbo kit void my BMW’s warranty?
The answer depends on your dealership and local warranty policies. Many manufacturers consider aftermarket modifications, including turbo kits, as voiding the warranty if they cause damage. However, some shops and brands offer warranties or guarantees on their kits. It’s wise to check your BMW warranty terms and consult with a professional before installation to understand potential impacts.
Can I install a turbo kit myself, or should I hire a professional?
While some experienced DIY enthusiasts may install certain bolt-on kits, most turbo upgrades—especially those claiming high horsepower gains—require advanced mechanical skills and proper tuning. Incorrect installation can lead to engine damage or reduced reliability. For most owners, hiring a professional with experience in BMW performance modifications ensures a safer, more reliable upgrade.
What supporting modifications are needed after installing a turbo kit?
Adding a turbo kit often requires supporting upgrades such as upgraded intercoolers, exhaust systems, fuel injectors, and tuning software. These modifications help manage increased airflow and heat, ensuring reliable performance and engine longevity. Skipping essential supports can lead to boost creep, overheating, or engine damage, so plan your build holistically.
How much horsepower can I expect from a turbo kit on my BMW M240i?
Most kits offer power increases ranging from 50 to over 150 horsepower, depending on the stage of the upgrade and supporting modifications. Stage 1 kits typically boost around 50-70hp, while Stage 3 setups can push 150hp or more under optimal tuning. Keep in mind that actual gains depend on tuning, fuel quality, and the overall health of your engine.
Is it worth investing in a Stage 3 turbo upgrade for daily driving?
Stage 3 upgrades deliver maximum power but often require extensive tuning and supporting parts, which may reduce reliability for daily driving. If you seek aggressive performance and are prepared for maintenance, a Stage 3 kit can be worthwhile. However, for regular street use, a milder upgrade might provide a better balance of power, reliability, and driveability.
Conclusion
For most owners seeking a reliable yet powerful upgrade, the B58 Turbo Upgrade Stage 3 offers a balanced mix of performance and durability, making it the best overall choice. Budget-conscious enthusiasts can opt for the A-Premium B03G Complete Turbocharger Turbo Kit, which provides good value without sacrificing too much power. Serious tuners aiming for maximum horsepower will find the B58 Turbo Upgrade Stage 3 800Hp options appealing, despite their higher complexity and cost. Beginners should consider simpler bolt-on kits with comprehensive support, while seasoned hobbyists might prefer custom setups for ultimate performance.
