What does the spring pressure rating mean?

The 1.15 spring pressure rating indicates the amount of force required to compress the spring. Higher ratings generally allow for higher boost pressures before the wastegate opens.

Can I use this spring in other brands of wastegates?

This spring is specifically designed for TiAL Sport MVS and MVR wastegates. Using it in other brands may not provide a proper fit or accurate boost control.

What is the difference between the inner and outer springs in a TiAL wastegate?

TiAL Sport wastegates often use a dual-spring setup. The inner spring provides a base boost pressure, while the outer spring adds to that pressure for a higher overall boost target.

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TiAL Sport Replacement Spring - MVS/MVR Yellow 38mm Inner Spring 1.15

Specifications

Brand: TiALSport
Part #: 001974
UPC: 001974

TiAL Sport Replacement Spring - MVS/MVR Yellow 38mm Inner Spring 1.15

Name: TiAL Sport Replacement Spring - MVS/MVR Yellow 38mm Inner Spring 1.15
Brand: TiALSport
SKU: tialsport-tial-sport-replacement-spring-mvs-mvr-yellow-38mm-inner-spring-1-15-t14-584064
Price: 9.31 USD
Availability: InStock

$9.31

On Backorder — Expected to ship by Apr 17, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits TiAL Sport MVS and MVR wastegates.
Yellow inner spring with a 38mm internal diameter.
1.15 spring pressure rating for boost control.
Well-built for consistent performance.

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Product Details

TiAL Sport is known for their high-performance wastegate components, and this replacement spring is a perfect example of their focus on precision tuning. This is the yellow inner spring for their MVS and MVR wastegates, specifically designed for a 38mm internal diameter. It offers a 1.15 spring pressure rating, allowing you to fine-tune your boost levels for optimal engine performance.

Swapping out wastegate springs is a common way to adjust boost pressure without needing to change the entire wastegate unit. This particular spring is well-built and designed to maintain its tension over time, ensuring consistent boost control. It's a straightforward part to swap in if you're looking to increase or decrease your boost threshold to match your engine's needs.