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The Mahle drop-in piston ring set for a 4.030 in bore features 1.5 mm top and second rings plus a 3.0 mm oil ring. Provided as direct-fit drop-in components, these rings are used during engine rebuilds or piston replacements to restore compression and manage oil consumption. Confirm the 4.030" bore dimension and thicknesses to achieve correct ring gap and an easy install.
Mahle MS 4.030in 1.5mm 1.5mm 3.0mm Drop-In Rings
