Description
Piston ring quality directly impacts compression, blow-by control, and engine longevity—especially critical in high-performance and racing applications where tolerances matter. The Hastings CM5521030 delivers consistent ring sealing with plasma moly coating for reduced friction and extended ring life, making it the reliable choice for rebuilds and performance builds. Whether you’re freshening a tired engine or optimizing a fresh block, this OEM-quality ring set ensures your engine performs as designed.
- Bore: 4.030 in
- Ring thickness: 1/16 x 1/16 x 1/8 in
- Plasma moly coating
- Standard tension
- 8-cylinder kit
- Claimer-grade construction
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