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MAHLE 4030-300S 4.030" Bore 3.0mm Oil Ring Expander Standard Tension

Part of: MAHLE Bore Oil Ring Expander Standard Tension

Other options in this family: MAHLE 4050-300S MAHLE 4135-300-S MAHLE 4155-300S MAHLE 4040-300S MAHLE 4145-300S

Manufacturer

Picture for manufacturer MAHLE

Part Number

4030-300S
8 reviews
Sale Price

$14.27

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The MAHLE 4030-300S is a precision-engineered oil ring expander designed for high-performance engine builds requiring a 4.030" bore diameter. This component is a critical element of the oil control ring assembly, providing proper radial tension to keep the oil ring rails in contact with the cylinder wall for effective oil control.

Key Specifications:

  • Bore Size: 4.030 inches
  • Expander Width: 3.0mm
  • Tension: Standard
  • Precision-manufactured to OE specifications
  • Compatible with 3-piece oil ring assemblies

MAHLE oil ring expanders are manufactured from high-quality spring steel to deliver consistent tension and durability throughout the engine's service life. The standard tension design provides reliable oil control for street performance and stock replacement applications. This expander works in conjunction with oil ring rails to maintain proper cylinder wall lubrication while preventing excessive oil consumption.

Application Note: Designed for engines with 4.030" cylinder bores, commonly found in small block Chevrolet rebuilds and other domestic V8 applications. Always verify bore size and ring specifications before installation.

Products specifications

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