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Wanmax Racing
Semi‑Cast B58 Gen 2 Intake Manifold for Toyota A90 Supra for BMW G29 Z4 40i G42 M240i G20 M340i G22 M440i
$1,130.00
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Categories: Intake Manifold
100% ORIGINAL AND QUALITY
24 MONTHS GUARANTEE
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DESCRIPTION
Upgrade Airflow, Lower IATs & Support High-Horsepower Tuning for B58TU Gen2 3.0L Turbo Models.
This semi-cast intake manifold is designed as a direct performance upgrade for B58TU Gen2 engines. It combines optimized internal air path geometry with an integrated high-density water-to-air intercooler core, helping reduce intake air temperatures under hard driving and minimize heat soak. The included CNC billet fuel rail supports 6-port auxiliary fueling readiness, making it suitable for Stage 2+, E85, race gas, and higher-boost builds.
Built from A356-T6 cast aluminum with precision CNC-machined sealing surfaces, this manifold is engineered for boost stability and leak-free fitment. It replaces the factory plastic-style manifold with a more rigid metal structure, while retaining original sensor locations and factory mounting points for a cleaner bolt-on installation.
VEHICLE FITMENT
Fitment Guarantee: 100% Bolt-on installation. No modifications, custom brackets, or engine bay cutting required. Fits perfectly with factory mounting points and cooling lines.
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Toyota GR Supra
2020 – Present Toyota GR Supra 3.0L (A90 / A91 Chassis) -
BMW 3 Series (G20 Chassis)
2019 – Present BMW M340i (3.0L L6 Turbo)
2019 – Present BMW M340i xDrive (3.0L L6 Turbo) -
BMW 2 Series (G42 Chassis)
2021 – Present BMW M240i (3.0L L6 Turbo) -
BMW 4 Series (G22 / G23 / G26 Chassis)
2020 – Present BMW M440i (Coupe / Convertible / Gran Coupe)
2020 – Present BMW M440i xDrive (Coupe / Convertible / Gran Coupe) -
BMW Z4 (G29 Chassis)
2019 – Present BMW Z4 M40i (3.0L L6 Turbo) -
BMW X3 & X4 (G01 / G02 Chassis — LCI / High-Output Models)
2020 – 2024 BMW X3 M40i (382hp / 374hp B58TU1 Versions)
2020 – 2024 BMW X4 M40i (382hp / 374hp B58TU1 Versions) -
BMW 5 Series & 7 Series (G30 / G11 Chassis — LCI / Late Models)
2020 – 2023 BMW 540i / 540i xDrive (Models equipped with B58TU1 engine)
2020 – 2022 BMW 740i / 740Li / 740iX (Models equipped with B58TU1 engine)
NOT COMPATIBLE WITH: Gen 1 B58 engines (e.g., F30 340i, F22 M240i, F20 M140i).
NOT COMPATIBLE WITH: Gen 3 B58TU2 engines (Latest 2025+ models utilizing the factory dual-injection port configuration).
KEY FEATURES
- Premium Semi-Cast A356-T6 Aluminum Construction: Gravity-cast main plenum with smooth internal airflow geometry; critical flanges and sealing surfaces are fully CNC-machined for stable fitment.
- Integrated High-Density Water-to-Air Intercooler Core: Maximizes surface contact area inside the manifold to help lower intake air temperatures and reduce heat soak during aggressive driving.
- 6-Port Auxiliary Fueling Ready: Pre-machined secondary injector ports and matching billet fuel rail support E85, race gas, water-methanol injection, and high-horsepower tuning setups.
- High-Boost Rigid Metal Structure: Replaces factory plastic manifold with a stronger aluminum design, helping withstand higher boost pressure without flexing or cracking.
- Retains Factory Sensor & Mounting Layout: Designed to work with original TMAP sensors, vacuum lines, and mounting points for a more straightforward installation.
- Bolt-On Installation with Included Hardware: Comes with manifold gasket, silicone coolant hoses, fuel rail brackets, o-rings, clamps, and full installation hardware kit.
TECH SPECIFICATIONS
- Engine Compatibility: B58TU Gen2 (Technical Update / Gen 2 Platform)
- Manifold Material: Premium A356-T6 Automotive Grade Cast Aluminum
- Flange & Rail Material: Aircraft-Grade 6061-T6 Solid Billet Aluminum (CNC)
- Intercooler Type: Water-to-Air (High-Density Bar & Plate Core)
- Auxiliary Fueling: 6-Port Secondary Injection Included
- Burst Pressure: Tested up to 50 PSI / 3.5 Bar
- Thermal Resistance: Up to 1100°F / 593°C without physical warping
- Fitment Layout: 100% Direct Bolt-On; retains all factory sensors
- Quality Standard: 100% Pressure-Tested & Leak-Tested before packing
WHAT'S IN THE BOX
- 1x High-Performance Semi-Cast Aluminum Integrated Intercooler Intake Manifold
- 1x CNC-Machined Billet Fuel Rail for Auxiliary Port Injection
- 1x High-Density Intake Manifold Flange Gasket
- 2x Reinforced Silicone Coolant Hoses
- 3x Fuel Vapor / Vacuum Line Hoses
- 4x Fuel Rail Support Brackets & Adapters
- 2x Fuel Rail End Plugs / Block-Off Caps
- 6x Cylinder Head Intake Port Viton O-Rings
- 6x Secondary Fuel Injector Sealing O-Rings
- 14x Stainless Steel T-Bolt & Worm Gear Hose Clamps
- 1x Full Installation Hardware Kit
Customization
Factory Customization & B2B Wholesaler Policy (OEM/ODM)
- Private Brand Laser Engraving (Logo Customization): We support precision laser etching of your company logo or custom serial numbers onto the CNC-machined billet surface of the manifold. (Low MOQ applies).
- Anodized Color Options: The included fuel rail, block-off plugs, and mounting brackets can be ordered in multiple custom anodized color finishes (Black, Silver, Blue, Red, Gold) to blend with your brand styling.
- Neutral & Bulk Packaging Options: We provide sturdy, plain brown-box neutral packaging with secure foam inserts for drop-shippers and regional distributors to obscure original manufacturer metrics.
- Sample Order Protection: Sample units are highly welcomed for local shop clearance tests, dyno verification, and fitment evaluation before finalizing large bulk container contracts.
FREQUENTLY ASKED QUESTIONS
Q1: What is the main structural advantage of a semi-cast manifold over a full billet manifold?
A: The semi-cast design balances performance and cost. Gravity casting allows smoother internal radius air paths that are difficult to replicate efficiently with full billet CNC milling. It offers similar boost handling and thermal capability at a more competitive price point.
Q2: Will this kit cause a Check Engine Light or sensor fault?
A: No. This manifold is designed around a direct-fit schematic. All factory sensors, including TMAP sensors and vacuum lines, connect back to original positions without modifying the factory wiring harness.
Q3: Do I need to use the 6-port auxiliary fuel rail immediately after install?
A: No. For basic Stage 1 or Stage 2 tunes running on factory direct injectors, the secondary ports can be blocked off using the included block-off caps. The auxiliary fueling ports are ready for future turbo upgrades, E85 setups, or higher-horsepower builds.
Q4: Are modifications required for the factory low-temperature cooling water loop？
A: No modifications are required. The kit includes pre-formed, reinforced multi-layer silicone cooling hoses designed to follow the original factory coolant routing lines.
