Air and Fuel Superchargers, Turbochargers and Components

Tial

MVS 38mm External Wastegate

$295.00

SKU: MVS38-BLU

In Stock
In Stock
Ships by Aug 5
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The TiAL MVS 38mm External Wastegate is engineered to provide substantial flow capacity within an exceptionally compact design, standing only 3.7 inches tall. This makes it ideal for applications where space is limited, such as twin-scroll dual-wastegate setups. Key features include three bottom pressure ports and a top mount pressure port that can be rotated. The V-band wastegate and manifold connections ensure a reliable and easy seal, eliminating the need for gaskets. Tial has also improved the diaphragm seating to prevent pinching, enhancing serviceability. Each wastegate comes with a full set of springs for fine-tuning boost settings. Constructed with durable materials, the MVS wastegate utilizes a high-temp NiCrFe alloy for the valve and a 347SS valve housing. The actuator diaphragm is high-temperature silicone Nomex reinforced, paired with a 17-7 PH Stainless Steel spring designed to maintain consistent pressure even at temperatures up to 900°F (483°C). The valve seat and bushing are made from Nitronic 60 Stainless Steel, capable of withstanding high temperatures and pressures without binding. The wastegate is available in several anodized aluminum actuator colors, including Blue. All stainless steel hardware is included, along with mating weld flanges and clamps for the V-band connections. The design also includes plugs for unused pressure ports, offering flexibility during installation.

MIA's Description

The TiAL MVS 38mm External Wastegate is a compact and high-flow wastegate designed for performance applications. It features a 3.7" height, making it significantly shorter than traditional 38mm wastegates. The wastegate includes multiple pressure ports for easy installation and a V-band connection for reliable sealing without bolts or gaskets.

Constructed with a high-temperature alloy valve and housing, it offers enhanced durability. The actuator diaphragm is made from high-temperature silicone Nomex reinforced material, and the actuator spring is 17-7 PH Stainless Steel for consistent pressure. The valve seat and bushing are Nitronic 60 Stainless Steel for resistance to heat and pressure.

Fitment

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Specifications

BrandTial
Part NumberMVS38-BLU
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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