Engines and Components› Camshafts and Valvetrain

Manley Performance

Manley Spring Cup 1.580in Spring OD 1.687in Cup OD .570in Cup ID - for Manley 221443

$126.43

SKU: M004 42370-16

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Description

The Manley Performance valve spring cups are a set of 16 precision-machined components designed for high-performance engine builds. They feature a 1.687-inch outside diameter and a 0.570-inch inside diameter, with a 0.062-inch locator thickness and a 0.140-inch shoulder height. These steel cups are engineered to fit valve springs with a 1.580-inch outside diameter.

Fitment

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Specifications

BrandManley Performance
Part NumberM004 42370-16

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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