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MAHLE moly piston ring set engineered for OEM-driven performance focuses on reducing friction and ring mass while minimizing engine oil consumption. This set fits GMC passenger 2.8L engines (1987–1989) and 3.1L engines (1988–1993), plus GMC truck 3.1L applications; MAHLE's technology aims to extend service life through improved sealing and reduced wear.
Mahle Rings GMC Pass 173 2.8L Eng 87-89 189 3.1L Eng 88-93 GMC Trk 189 3.1L Moly Ring Set
